Microbial Systems Ecology and Evolution

Documentos

DISTATIS: A Promising Framework to Integrate Distance Matrices in Molecular Phylogenetics.
Background: Molecular phylogenetic algorithms frequently disagree with the approaches considering reproductive compatibility and morphological criteria for species delimitation. The question stems if the resulting species boundaries from molecular, reproductive and/or morphological data are definiti...
year: 2021 - type: Scopus - journal: Current Topics in Medicinal Chemistry  - DOI: 10.2174/1568026621666210113164605  - Google Schoolar: search

Correction to: Global AM fungi are dominating mycorrhizal communities in a tropical premontane dry forest in Laipuna, South Ecuador (Mycological Progress, (2021), 20, 6, (837-845), 10.1007/s11557-021-01699-4)
The original version of this article inadvertently contained a mistake. The reason is that the legends of Figs. 3, 4, and 5 are incorrectly assigned in the PDF version while correctly presented in the html version (with Production). This is due to production template error. This is being corrected i...
year: 2021 - type: Scopus - journal: Mycological Progress  - DOI: 10.1007/s11557-021-01721-9  - Google Schoolar: search

Plant growth-promoting microorganisms in coffee production: From isolation to field application
Coffee is an important, high-value crop because its roasted beans are used to produce popular beverages that are consumed worldwide. Coffee plantations exist in over 70 countries and constitute the main economic activity of approximately 125 million people. Currently, there is global concern regardi...
year: 2021 - type: Scopus - journal: Agronomy  - DOI: 10.3390/agronomy11081531  - Google Schoolar: search

Artificial Intelligence in Neuroeducation: The Influence of Emotions in the Learning Science
Teaching is considered an emotional practice, in which emotions play a vital role in the cognitive and efficient learning processes. In this sense, the principal aim of this work is to present an artificial and psychological vision to analyze the facial expressions in higher education students. The ...
year: 2021 - type: Scopus - journal: Advances in Intelligent Systems and Computing  - DOI: 10.1007/978-3-030-60467-7_6  - Google Schoolar: search

A research framework for projecting ecosystem change in highly diverse tropical mountain ecosystems
ropical mountain ecosystems are threatened by climate and land-use changes. Their diversity and complexity make projections how they respond to environmental changes challenging. A suitable way are trait-based approaches, by distinguishing between response traits that determine the resistance of spe...
year: 2021 - type: Scopus - journal: Oecologia  - DOI: 10.1007/s00442-021-04852-8  - Google Schoolar: search

Virus (2013): Cinema as a tool in teaching, with medical and molecular approaches] [Virus (2013): El cine como una herramienta en la docencia, con aproximaciones mÉdicas y moleculares
Cinema is a training resource that has been used frequently to facilitate learning in the health sciences. The biomedical content of the film Virus is described and analyzed, aimed at presenting the massive contagion by influenza A H5N1 viruses. The virus by presenting mutations that favor contagion...
year: 2021 - type: Scopus - journal: Revista de Medicina y Cine  - DOI: 10.14201/RMC2021173207214  - Google Schoolar: search

Small plot surveying reveals high fungal diversity in the Ecuadorian Amazon – a case study
The diversity and ecology of macrofungi based on fruitbody collections in a small portion of a 25-year-old regenerating forest in tropical Ecuador was investigated over a period of 8 weeks. Maps are provided of the living trees of three 10 m x 10 m plots within the for...
year: 2021 - type: Scopus - journal: Current Research in Environmental and Applied Mycology  - DOI: 10.5943/cream/11/1/2  - Google Schoolar: search

Gram-negative bacteria from organic and conventional agriculture in the hydrographic basin of loja: Quality or pathogen reservoir?
Organic and conventional agriculture are vital for the development of human society; however, the use of contaminated water and the inappropriate use of organic chemical fertilizers can lead to an increase in the microbial load (potentially pathogenic) of the normal microbiota of the agricultural so...
year: 2021 - type: Scopus - journal: Agronomy  - DOI: 10.3390/agronomy11112362  - Google Schoolar: search

Effect of the application of Azospirillum sp. And Azotobacter sp. And the growth and productivity of kikuyo (Pennisetum clandestinum)
The use of plant growth-promoting bacteria (PGPR) is considered an alternative to substitute chemical fertilizers since it favors the productivity of plant species. The present study evaluated the effect of PGPR of the genera Azospirillum sp. and Azotobacter sp. on Pennisetum clandestinum (kikuyo) o...
year: 2021 - type: Scopus - journal: Revista Bionatura  - DOI: 10.21931/RB/2021.06.04.4  - Google Schoolar: search

Biodiversity and ecosystem functions depend on environmental conditions and resources rather than the geodiversity of a tropical biodiversity hotspot
Biodiversity and ecosystem functions are highly threatened by global change. It has been proposed that geodiversity can be used as an easy-to-measure surrogate of biodiversity to guide conservation management. However, so far, there is mixed evidence to what extent geodiversity can predict biodivers...
year: 2021 - type: Scopus - journal: Scientific Reports  - DOI: 10.1038/s41598-021-03488-1  - Google Schoolar: search

Global AM fungi are dominating mycorrhizal communities in a tropical premontane dry forest in Laipuna, South Ecuador
Tropical dry forests are an intricate ecosystem with special adaptations to periods of drought. Arbuscular mycorrhizal fungi (AMF) are essential for plant survival in all terrestrial ecosystems but might be of even greater importance in dry forests as plant growth is limited due to nutrient and wate...
year: 2021 - type: Scopus - journal: Mycological Progress  - DOI: 10.1007/s11557-021-01699-4  - Google Schoolar: search

Moderate phosphorus additions consistently affect community composition of arbuscular mycorrhizal fungi in tropical montane forests in southern Ecuador
©2020 The Authors. New Phytologist ©2020 New Phytologist Trust Anthropogenic atmospheric deposition can increase nutrient supply in the most remote ecosystems, potentially affecting soil biodiversity. Arbuscular mycorrhizal fungal (AMF) communities rapidly respond to simulated soil eutrophication ...
year: 2020 - type: Scopus - journal: New Phytologist  - DOI: 10.1111/nph.16641  - Google Schoolar: search

Caracterización morfológica de hongos micorrízicos arbusculares (HMA) asociados al café en sistemas agroforestales de la provincia de Loja, Ecuador
The arbuscular mycorrhizal fungi (AMF) are important in the rhizosphere, since they stablish a symbiosis with approximately 80% of plants; this association contributes to a better absorption of water and nutrients; as well as the protection of the plant root system. So, this is how the AMF are found...
year: 2020 - type: Latindex Directorio - journal: Bosques Latitud Cero  - Google Schoolar: search

Wild Solanum cajanumensis species as a potential reservoir of arbuscular mycorrhizal fungi diversity compatible with cultivated Solanum betaceum species
The community structure of arbuscular mycorrhizal fungi (AMF) is wide in terms of composition and distribution and can be influenced by the host plant. The aim of this research was to compare the diversity of AMF communities associated with cultivated (Solanum betaceum) and wild tree tomato (Solanum...
year: 2020 - type: Scopus - journal: Agriculture and Natural Resources  - DOI: 10.34044/j.anres.2020.54.5.15  - Google Schoolar: search

Staurosporine from Streptomyces sanyensis activates Programmed Cell Death in Acanthamoeba via the mitochondrial pathway and presents low in vitro cytotoxicity levels in a macrophage cell line
© 2019, The Author(s). Recently, the search for novel therapeutic agents against Acanthamoeba species has been focused on the evaluation of natural resources. Among them, marine microorganisms have risen as a source of bioactive compounds with the advantage of the ability to obtain unlimited and co...
year: 2019 - type: Scopus - journal: Scientific Reports  - DOI: 10.1038/s41598-019-48261-7  - Google Schoolar: search

Identifying Demyelinating and Ischemia brain diseases through magnetic resonance images processing
Brain Magnetic Resonance Images are a very useful tool for the diagnosis of brain diseases and analyse brain changes. The appropriate processing (neuroimaging) can help to identify, measure and classify different lesions or abnormalities. The principal aim of this project is to develop an algorithm ...
year: 2019 - type: Scopus - journal: 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019  - DOI: 10.1109/NSS/MIC42101.2019.9060022  - Google Schoolar: search

Many broadly-shared mycobionts characterize mycorrhizal interactions of two coexisting epiphytic orchids in a high elevation tropical forest
Interspecific interactions play an important role in community assembly. A basic ecological question is whether interactions are specialized (one to one) or generalized (many to many). Specialization of interactions should ideally be assessed across several populations because species could be speci...
year: 2019 - type: Scopus - journal: Fungal Ecology  - DOI: 10.1016/j.funeco.2018.11.003  - Google Schoolar: search

Species composition of arbuscular mycorrhizal communities changes with elevation in the Andes of South Ecuador
© 2019 Haug et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Arbuscular mycorrhizal fungi (AMF) are the m...
year: 2019 - type: Scopus - journal: PLoS ONE  - DOI: 10.1371/journal.pone.0221091  - Google Schoolar: search

Especies vegetales para frenar el impacto por mercurio
Se investiga el potencial de especies vegetales nativas para contrarestar el impacto ambiental causado por la minería artesanal en suelos ecuatorianos....
year: 2019 - type: Artículos Publicados de Divulgación Local - journal: Perspectivas  - Google Schoolar: search

Catabolic task division between two near-isogenic subpopulations co-existing in a herbicide-degrading bacterial consortium: consequences for the interspecies consortium metabolic model
Society for Applied Microbiology and John Wiley & Sons Ltd Variovorax sp. WDL1 mediates hydrolysis of the herbicide linuron into 3,4-dichloroaniline (DCA) and N,O-dimethylhydroxylamine in a tripartite bacterial consortium with Comamonas testosteroni WDL7 and Hyphomicrobium sulfonivorans WDL6. Alth...
year: 2018 - type: Scopus - journal: Environmental Microbiology  - DOI: 10.1111/1462-2920.13994  - Google Schoolar: search

Effect of different visible light on rhizobacterial growth
The effect of laser irradiation is one of the most important factors that affect the bacteria survival due to the wavelengths that emit the different light sources. The high-intensity broadband visible light (400–800nm) can reduce viability of bacterial strains. The main objective is to assess the...
year: 2018 - type: Scopus - journal: Proceedings of SPIE - The International Society for Optical Engineering  - DOI: 10.1117/12.2321353  - Google Schoolar: search

Making sticky cells: effect of galactose and ferrous iron on the attachment of Leptospirillum ferrooxidans to mineral surfaces
The purpose of this study was to compare the efficacy of galactose and high initial ferrous iron concentrations as inducers for extracellular polymeric substances (EPS) production in planktonic cells of Leptospirillum ferrooxidans and to study cell attachment to a mineral surface in comparison to ce...
year: 2018 - type: Scopus - journal: Research in Microbiology  - DOI: 10.1016/j.resmic.2018.08.005  - Google Schoolar: search

Molecular detection of bacteria associated with Serendipita sp., a mycorrhizal fungus from the orchid Stanhopea connata Klotzsch in southern Ecuador
© 2018 Société botanique de France We examined the bacterial community associated with an orchid mycorrhizal fungus from the Neotropical region. Living hyphae of Serendipita sp., isolated from roots of Stanhopea connata, were screened using molecular tools to identify associated prokaryotes. In t...
year: 2018 - type: Scopus - journal: Botany Letters  - DOI: 10.1080/23818107.2018.1436087  - Google Schoolar: search

In situ Orchid Seedling-Trap Experiment Shows Few Keystone and Many Randomly Associated Mycorrhizal Fungal Species During Early Plant Colonization
Orchids are known for their vast diversity and dependency on mycorrhizal fungi. Under in situ conditions, the biotic and abiotic factors determining the composition and distribution of orchid mycorrhizal fungi (OMF) communities remain largely unexplored. Therefore in situ experiments are needed to b...
year: 2018 - type: ISI - journal: Frontiers in Plant Science  - DOI: 10.3389/fpls.2018.01664  - Google Schoolar: search

Inactivation of a wild isolated Klebsiella pneumoniae by photo-chemical processes: UV-C, UV-C/H2O2 and UV-C/H2O2/Fe3+
Shrimp (Litopenaeus vannamei) farming is an important economic activity in several countries. Pathogens in shrimp farms and its effluents pose a potential hazard for both humans and shrimps. Wild strains of bacteria were characterized in a shrimp farm, and Klebsiella pneumoniae was chosen as a good ...
year: 2018 - type: Scopus - journal: Catalysis Today  - DOI: 10.1016/j.cattod.2017.10.043  - Google Schoolar: search

Magnetic resonance brain images algorithm to identify demyelinating and ischemic diseases
Brain demyelination lesions occur due to damage of the myelin layer of nerve fibers, this deterioration is the cause of pathologies such as multiple sclerosis, leukodystrophy, encephalomyelitis. Brain ischemia is the interruption of the blood supply to the brain, and the flow of oxygen and nutrients...
year: 2018 - type: Scopus - journal: Proceedings of SPIE - The International Society for Optical Engineering  - DOI: 10.1117/12.2322048  - Google Schoolar: search

Análisis de comunidades bacterianas asociadas a la rizósfera de especies vegetales Miconia zamorensis y Erato polymnoides en suelos contaminados por metales pesados.
Polluted ecosystems has severaL microorganisms such as bacteria can improve biomass production and tolerance to heavy metals and stress condition . In this context, the present study is focus in the identification and comparison of the bacterial communities associated to vegetal species (i.e. Miconi...
year: 2018 - type: Latindex Directorio - journal: Bionatura  - DOI: 10.21931/rb/2018.03.02.6  - Google Schoolar: search

Multidisciplinary HACKATHON: strengthening project-based learning [HACKATHON multidisciplinario: fortalecimiento del aprendizaje basado en proyectos]
The multidisciplinary Hackathon academic activity was applied to some groups of mathematics in Universidad Técnica Particular de Loja students during the period time of in October 2016 - March 2017. The students registered worked in multidisciplinary groups to try to response: What problem or so...
year: 2018 - type: ISI - journal: REVISTA ELECTRÓNICA CALIDAD EN LA EDUCACIÓN SUPERIOR  - DOI: 10.22458/caes.v9i1.1893  - Google Schoolar: search

Untangling factors that drive community composition of root associated fungal endophytes of Neotropical epiphytic orchids
© 2018 Elsevier Ltd and British Mycological Society In orchids, most of the root-associated fungal endophytes remain undescribed as well as the drivers that affect their interactions with the plants. We characterized root-associated fungal endophytes of co-existing orchids across sites in two areas...
year: 2018 - type: Scopus - journal: Fungal Ecology  - DOI: 10.1016/j.funeco.2018.05.002  - Google Schoolar: search

Assessing the effect of pretreatments on the structure and functionality of microbial communities for the bioconversion of microalgae to biogas
© 2018 Córdova, Chamy, Guerrero and Sánchez-Rodríguez. Microalgae biomethanization is driven by anaerobic sludge associated microorganisms and is generally limited by the incomplete hydrolysis of the microalgae cell wall, which results in a low availability of microalgal biomass for the methanog...
year: 2018 - type: Scopus - journal: Frontiers in Microbiology  - DOI: 10.3389/fmicb.2018.01388  - Google Schoolar: search

Diversidad de plantas, estructura de la comunidad y biomasa aérea en un páramo del sur del Ecuador
El monitoreo a largo plazo en ecosistemas de alta montaña es clave para entender el impacto del cambio ambiental global en la biodiversidad. El estudio se enfocó en analizar la diversidad florística existente y en determinar el contenido de biomasa vegetal dentro del ecosistema páramo en el s...
year: 2018 - type: Latindex Directorio - journal: Bosques Latitud Cero  - Google Schoolar: search

Towards semantic interoperability for smart and sustainable management of high biodiversity territories using SmartLand-LD [Hacia la interoperabilidad semántica para el manejo inteligente y sostenible de territorios de alta biodiversidad usando SmartLand-LD]
A present challenge in today's sustainable development efforts is to empower interoperability between variables and indicators across autonomous, distributed and heterogeneous information systems, and data service providers. Restricted access to data sources and services limits the capabilities of a...
year: 2018 - type: Scopus - journal: RISTI - Revista Iberica de Sistemas e Tecnologias de Informacao  - DOI: 10.17013/risti.26.104-121  - Google Schoolar: search

Do fungi need salt licks? No evidence for fungal contribution to the Sodium Ecosystem Respiration Hypothesis based on lab and field experiments in Southern Ecuador
British Mycological Society Though typically discussed in the context of salinity, a shortage of sodium in tropical forests has been demonstrated in recent years, inhibiting soil biota with impacts on decomposition processes (Sodium Ecosystem Respiration hypothesis). So far, sodium limitation has be...
year: 2018 - type: Scopus - journal: Fungal Ecology  - DOI: 10.1016/j.funeco.2017.11.004  - Google Schoolar: search

SmartLand-LD: A Linked data approach for integration of heterogeneous datasets to intelligent management of high biodiversity territories
A crucial issue in the development of smart sustainable cities and territories is the use of standards and approach’s to ensure interoperability – so that equipment and systems produced by different vendors work together seamlessly – and to reduce costs through economies of scale. In this work...
year: 2018 - type: Scopus - journal: Advances in Intelligent Systems and Computing  - DOI: 10.1007/978-3-319-69341-5_19  - Google Schoolar: search

Generalism in the interaction of Tulasnellaceae mycobionts with orchids characterizes a biodiversity hotspot in the tropical Andes of Southern Ecuador
Biotic interactions play an important role in the assembly and stability of communities. All orchids depend on mycobionts for early establishment, but whether individual orchid species depend on a specific or broad spectrum of mycobionts is still a matter of debate. Tulasnellaceae (Basidiomycota) is...
year: 2018 - type: Scopus - journal: Mycoscience  - DOI: 10.1016/j.myc.2017.08.003  - Google Schoolar: search

High diversity of root-associated fungi isolated from three epiphytic orchids in southern Ecuador
Knowledge of fungal root-associates is essential for effective conservation of tropical epiphytic orchids. We investigated the diversity of root-associated fungi of Cyrtochilum myanthum, Scaphyglottis punctulata and Stelis superbiens from a tropical mountain rainforest in southern Ecuador, using a c...
year: 2018 - type: Scopus - journal: Mycoscience  - DOI: 10.1016/j.myc.2017.07.007  - Google Schoolar: search

Genetic and phenotypic diversity of Rhizobium isolates from southern Ecuador [Diversidade genética e fenotípica de isolados de Rhizobium do sul do Equador]
Rhizobium-legume symbioses play relevant roles in agriculture but have not been well studied in Ecuador. The aim of this study was to characterize the genetic and phenotypic diversity of Rhizobium isolates associated with Phaseolus vulgaris from southern Ecuador. Morphocultural characterization, bio...
year: 2017 - type: ISI - journal: Ciencia e Agrotecnologia  - DOI: 10.1590/1413-70542017416008517  - Google Schoolar: search

From flamingo dance to (desirable) drug discovery: A nature-inspired approach
The therapeutic effects of drugs are well known to result from their interaction with multiple intracellular targets. Accordingly, the pharma industry is currently moving from a reductionist approach based on a 'one-target fixation' to a holistic multitarget approach. However, many drug discovery pr...
year: 2017 - type: Scopus - journal: Drug Discovery Today  - DOI: 10.1016/j.drudis.2017.05.008  - Google Schoolar: search

Machine learning based multiclassifiers as a neurotoxicity estimation tool for ionic liquids
Los líquidos iónicos poseen un perfil fisicoquímico único, el cual los provee de un amplio rango de aplicaciones. Su variabilidad estructural casi ilimitada permite su diseño para tareas específicas. Sin embargo, su sustentabilidad, específicamente su seguridad desde el punto de vista toxicol...
year: 2017 - type: ISI - journal: AFINIDAD  - Google Schoolar: search

Erato polymnioides – A novel Hg hyperaccumulator plant in ecuadorian rainforest acid soils with potential of microbe-associated phytoremediation
Mercury (Hg) accumulation capacity was assessed in three plant species (Axonopus compressus, Erato polymnioides, and Miconia zamorensis) that grow on soils polluted by artisanal small-scale gold mines in the Ecuadorian rainforest. Individuals of three species were collected at two sampling zones: i)...
year: 2017 - type: Scopus - journal: Chemosphere  - DOI: 10.1016/j.chemosphere.2017.08.160  - Google Schoolar: search

Educación de calidad mediante la estrategia Design Thinking
Las instituciones de educación superior actualmente invitan a la aplicación de nuevas estrategias de enseñanza/aprendizaje que permitan apoyar al estudiante en el planteamiento y desarrollo de proyectos de investigación, complementando de esta manera una adecuada educación de calidad. Se define...
year: 2017 - type: Artículos Publicados de Divulgación Internacional - journal: EDUNOVATIC 2017  - Google Schoolar: search

Are there keystone mycorrhizal fungi associated to tropical epiphytic orchids?
In epiphytic orchids, distinctive groups of fungi are involved in the symbiotic association. However, little is known about the factors that determine the mycorrhizal community structure. Here, we analyzed the orchid mycorrhizal fungi communities associated with three sympatric Cymbidieae epiphytic ...
year: 2017 - type: Scopus - journal: Mycorrhiza  - DOI: 10.1007/s00572-016-0746-8  - Google Schoolar: search

Consensus strategy in genes prioritization and combined bioinformatics analysis for preeclampsia pathogenesis
Preeclampsia is a multifactorial disease with unknown pathogenesis. Even when recent studies explored this disease using several bioinformatics tools, the main objective was not directed to pathogenesis. Additionally, consensus prioritization was proved to be highly efficient in the recognition of g...
year: 2017 - type: Scopus - journal: BMC Medical Genomics  - DOI: 10.1186/s12920-017-0286-x  - Google Schoolar: search

Colors vision effect: learning and teaching strategies based on reading nature images
The present work shows the teaching and motivation of University students to think about optics and color effects. The methodology consists of studying the different optical phenomena that occur through the sunsets and then do a correlation of this information with the phenomena and optical effects ...
year: 2017 - type: Scopus - journal: Proceedings of SPIE - The International Society for Optical Engineering  - DOI: 10.1117/12.2274620  - Google Schoolar: search

Demyelinating and ischemic brain diseases: Detection algorithm through regular magnetic resonance images
This work presents the advance to development of an algorithm for automatic detection of demyelinating lesions and cerebral ischemia through magnetic resonance images, which have contributed in paramount importance in the diagnosis of brain diseases. The sequences of images to be used are T1, T2, an...
year: 2017 - type: Scopus - journal: Proceedings of SPIE - The International Society for Optical Engineering  - DOI: 10.1117/12.2274579  - Google Schoolar: search

Systemic QSAR and phenotypic virtual screening: Chasing butterflies in drug discovery
Current advances in systems biology suggest a new change of paradigm reinforcing the holistic nature of the drug discovery process. According to the principles of systems biology, a simple drug perturbing a network of targets can trigger complex reactions. Therefore, it is possible to connect initia...
year: 2017 - type: Scopus - journal: Drug Discovery Today  - DOI: 10.1016/j.drudis.2017.02.004  - Google Schoolar: search

Impact of plant growth-promoting rhizobacteria on root colonization potential and life cycle of Rhizophagus irregularis following co-entrapment into alginate beads
Aims: This study aimed at evaluating the impact of seven plant growth-promoting rhizobacteria (PGPR) on root colonization and life cycle of Rhizophagus irregularis MUCL 41833 when co-entrapped in alginate beads. Methods and Results: Two in vitro experiments were conducted. The first consisted of the...
year: 2017 - type: Scopus - journal: Journal of Applied Microbiology  - DOI: 10.1111/jam.13355  - Google Schoolar: search

Potato field-inoculation in Ecuador with Rhizophagus irregularis: no impact on growth performance and associated arbuscular mycorrhizal fungal communities
A field trial was conducted in two localities of the Ecuadorian Andes to evaluate potato (Solanum tuberosum c.v. INIAP - Fripapa) response to inoculation with four commercial products containing the arbuscular mycorrhizal fungus (AMF) strain Rhizophagus irregularis DAOM 197198. In parallel, potato r...
year: 2017 - type: Scopus - journal: Symbiosis  - DOI: 10.1007/s13199-016-0471-2  - Google Schoolar: search

In vitro comparative study of adaptive strategies in Hylocereus species, Cactaceae, with contrasted ecological distribution [Estudio comparativo in vitro de estrategias adaptativas en especies de Hylocereus, Cactaceae, con distribución ecológica contrastada.]
Hylocereus ocamponis and Hylocereus triangularis are two phylogenetically closely-related cacti species that show completely different growth habits. The first species occurs in dry ecosystems while the second one growths in the tropical rainforest, in dry forest western and the amazonic region Ecua...
year: 2017 - type: Scopus - journal: Revista Bionatura  - DOI: 10.21931/RB/2017.02.03.3  - Google Schoolar: search

Effect of galactose on EPS production and attachment of acidithiobacillus thiooxidans to mineral surfaces
The presence of extracellular polymeric substances (EPS) and their relevance for biofilm formation on the mineral surface for a variety of microbial species play a fundamental role in the degradation of sulfide ores. EPS production is associated with induction or auto induction mechanisms as a respo...
year: 2017 - type: Scopus - journal: Solid State Phenomena  - DOI: 10.4028/www.scientific.net/SSP.262.476  - Google Schoolar: search

Chemoinformatics profiling of the chromone nucleus as a MAO-B/A2AAR dual binding scaffold
In the context of the current drug discovery efforts to find disease modifying therapies for Parkinson’s disease (PD) the current single target strategy has proved inefficient. Consequently, the search for multi-potent agents is attracting more and more attention due to the multiple pathogenetic f...
year: 2017 - type: Scopus - journal: Current Neuropharmacology  - DOI: 10.2174/1570159X15666170116145316  - Google Schoolar: search

Alignment-free methods for the detection and specificity prediction of adenylation domains
© Springer Science+Business Media New York 2016. Identifying adenylation domains (A-domains) and their substrate specificity can aid the detection of nonribosomal peptide synthetases (NRPS) at genome/proteome level and allow inferring the structure of oligopeptides with relevant biological activiti...
year: 2016 - type: Scopus - journal: Methods in Molecular Biology  - DOI: 10.1007/978-1-4939-3375-4_16  - Google Schoolar: search

Probing the Hypothesis of SAR Continuity Restoration by the Removal of Activity Cliffs Generators in QSAR
In this work we report the first attempt to study the effect of activity cliffs over the generalization ability of machine learning (ML) based QSAR classifiers, using as study case a previously reported diverse and noisy dataset focused on drug induced liver injury (DILI) and more than 40 ML classif...
year: 2016 - type: Scopus - journal: Current Pharmaceutical Design  - DOI: 10.2174/1381612822666160509124337  - Google Schoolar: search

Morphological and molecular identification of Fusarium species associated with vascular wilt of babaco (Vasconcellea heilbornii var. pentagona Badillo)
Se caracterizaron morfológica y molecularmente los aislados patogénicos de Fusarium asociados al babaco (Vasconcellea heilbornii, Badillo). Se colectaron raíces con síntomas de pudrición radicular en varias áreas de mayor producción en el sur del Ecuador y se obtuvieron aislados monospóricos...
year: 2016 - type: SciELO - journal: Protección Veg  - Google Schoolar: search

Opposing effects of nitrogen versus phosphorus additions on mycorrhizal fungal abundance along an elevational gradient in tropical montane forests
Studies in temperate systems provide evidence that the abundance of arbuscular mycorrhizal fungal (AMF) depends on soil nutrient availability, which is mainly explained in the context of resource stoichiometry and differential plant biomass allocation. We applied this concept to an understudied ecos...
year: 2016 - type: Scopus - journal: Soil Biology and Biochemistry  - DOI: 10.1016/j.soilbio.2015.11.011  - Google Schoolar: search

Ligand-Based Virtual Screening Using Tailored Ensembles: A Prioritization Tool for Dual A2A Adenosine Receptor Antagonists / Monoamine Oxidase B Inhibitors
Virtual Screening methodologies have emerged as efficient alternatives for the discovery of new drug candidates. At the same time, ensemble methods are nowadays frequently used to overcome the limitations of employing a single model in ligand-based drug design. However, many applications of ensemble...
year: 2016 - type: Scopus - journal: Current Pharmaceutical Design  - DOI: 10.2174/1381612822666160302103542  - Google Schoolar: search

Morphological revision of Tulasnellaceae, with two new species of Tulasnella and new records of Tulasnella spp. for Ecuador
Due to ambiguous morphological and molecular characteristics, species of Tulasnellaceae are difficult to organize taxonomically. In this study a morphological revision of the family and 30 reinvestigated morphospecies of Tulasnella are presented. Illustrations, descriptions, statistical analysis, a...
year: 2016 - type: ISI - journal: Nova Hedwigia  - DOI: 10.1127/nova_hedwigia/2015/0304  - Google Schoolar: search

Shifts in leaf litter breakdown along a forest–pasture–urban gradient in Andean streams
Tropical montane ecosystems of the Andes are critically threatened by a rapid land-use change which can potentially affect stream variables, aquatic communities and ecosystem processes such as leaf litter breakdown. However, these effects have not been sufficiently investigated in the Andean region ...
year: 2016 - type: Scopus - journal: Ecology and Evolution  - DOI: 10.1002/ece3.2257  - Google Schoolar: search

Do mycorrhizal fungi drive speciation in Teagueia (Orchidaceae) in the upper Pastaza watershed of Ecuador?
The orchid genus Teagueia Luer (Orchidaceae, subtribe Pleurothallidinae) presents an extraordinary example of recent local evolutionary radiation. In principle, mutualisms might affect the origin of plant species via an effect on speci- ation. As orchids depend on mycorrhizal fungi for seed ger- min...
year: 2016 - type: Scopus - journal: Symbiosis  - DOI: 10.1007/s13199-016-0399-6  - Google Schoolar: search

Main fungal partners and different levels of specificity of orchid mycorrhizae in the tropical mountain forests of Ecuador
Orchids are a main component of the diversity of vascular plants in Ecuador with approximately 4000 species representing about 5.3% of the orchid species described worldwide. More than a third of these species are endemics. As orchids, in contrast to other plants, depend on mycorrhizal fungi already...
year: 2016 - type: Scopus - journal: Lankesteriana  - DOI: 10.15517/lank.v16i2.26014  - Google Schoolar: search

Optimization of a molecular technique for the characterization of bacterial and fungal soil communities in tropical ecosystems in southern Ecuador [Puesta a punto de una técnica molecular para el estudio de hongos y bacterias totales de suelo en ecosistemas tropicales del sur de Ecuador]
A protocol for molecular characterization of soil microbial communities of tropical ecosystems (Tropical Dry Forest, TDF; Tropical Dry Scrub, TDS and Tropical Montane Forest, TMF) in southern Ecuador, was optimized. These ecosystems were selected due to their great biological interest, its high biod...
year: 2016 - type: Scopus - journal: Ciencia del Suelo  - DOI: doi  - Google Schoolar: search

Increases in soil aggregation following phosphorus additions in a tropical premontane forest are not driven by root and arbuscular mycorrhizal fungal abundances
Camenzind, Papathanasiou, Förster, Dietrich, Hertel, Homeier, Oelmann, Olsson, Suárez and Rillig. Tropical ecosystems have an important role in global change scenarios, in part because they serve as a large terrestrial carbon pool. Carbon protection is mediated by soil aggregation processes, where...
year: 2016 - type: Scopus - journal: Frontiers in Earth Science  - DOI: 10.3389/feart.2015.00089  - Google Schoolar: search

Metabolic profiling of alpine and ecuadorian lichens
Non-targeted 1H-NMR methods were used to determine metabolite profiles from crude extracts of Alpine and Ecuadorian lichens collected from their natural habitats. In control experiments, the robustness of metabolite detection and quantification was estimated using replicate measurements of Stereocau...
year: 2015 - type: Scopus - journal: Molecules  - DOI: 10.3390/molecules201018047  - Google Schoolar: search

The induction of ethylene response factor 3 (ERF3) in potato as a result of co-inoculation with pseudomonas sp. r41805 and rhizophagus irregularis MUCL 41833 – a possible role in plant defense
Colonization of plant rhizosphere/roots by beneficial microorganisms (e.g. plant growth promoting rhizobacteria –PGPR, arbuscular mycorrhizal fungi – AMF) confers broad-spectrum resistance to virulent pathogens and is known as induced systemic resistance (ISR) and mycorrhizal-induced resistance ...
year: 2015 - type: Scopus - journal: Plant Signaling and Behavior  - DOI: 10.4161/15592324.2014.988076  - Google Schoolar: search

Chemoinformatics Profiling of Ionic Liquids Cytotoxicity—From Machine Learning to Network-Like Similarity Graphs
Ionic liquids (ILs) possess a unique physicochemical profile providing a wide range of applications. However, their “greenness”, specifically their claimed relative non toxicity has been frequently questioned, hindering their REACH registration processes and so, their final application. In this ...
year: 2015 - type: Artículos Publicados de Divulgación Local - journal: Mol2Net  - DOI: 10.3390/MOL2NET-1-b001  - Google Schoolar: search

Virtual screening tailored ensembles of QSAR models for the discovery of dual A2A Adenosine Receptor Antagonists / Monoamine Oxidase B Inhibitors
Virtual Screening methodologies have emerged as efficient alternatives for the discovery of new drug candidates. At the same time, ensemble methods are nowadays frequently used to overcome the limitations of employing a single model in ligand-based drug design. However, many applications of ensemble...
year: 2015 - type: Artículos Publicados de Divulgación Local - journal: Mol2Net  - DOI: 10.3390/MOL2NET-1-b033  - Google Schoolar: search

Non-coding chloroplast regions analysis within the Orchidaceae family in Southern Ecuador
Non-coding regions of the chloroplast genome offer interesting levels of nucleotide variation which are very useful for molecular genetics, population and phylogenetic analysis. The family Orchidaceae is represented by ca. 500 species in Southern Ecuador. In order to determine the genetic variabilit...
year: 2015 - type: DOAJ - journal: Bionatura  - Google Schoolar: search

Frequency-based haplotype reconstruction from deep sequencing data of bacterial populations
Clonal populations accumulate mutations over time, resulting in different haplotypes. Deep sequencing of such a population in principle provides information to reconstruct these haplotypes and the frequency at which the haplotypes occur. However, this reconstruction is technically not trivial, espec...
year: 2015 - type: Scopus - journal: Nucleic Acids Research  - DOI: 10.1093/nar/gkv478  - Google Schoolar: search

Antibacterial and cytotoxic activity from the extract and fractions of a marine derived bacterium from the Streptomyces genus
Marine natural products are a rich source of potent, selective, and structurally novel compounds. Marine bacteria are considered the most promising source of biologically active compounds which can be applied to treat a wide range of diseases. Objective: The current study was designed to establish t...
year: 2015 - type: Scopus - journal: Pharmaceutical Biology  - DOI: 10.3109/13880209.2015.1010739  - Google Schoolar: search

Identification of mVOCs from Andean Rhizobacteria and Field Evaluation of Bacterial and Mycorrhizal Inoculants on Growth of Potato in its Center of Origin
Food security (a pressing issue for all nations) faces a threat due to population growth, land availability for growing crops, a changing climate (leading to increases in both abiotic and biotic stresses), heightened consumer awareness of the risks related to the use of agrichemicals, and also the r...
year: 2015 - type: ISI - journal: Microbial Ecology  - DOI: 10.1007/s00248-014-0514-2  - Google Schoolar: search

Improved group-specific primers based on the full SILVA 16S rRNA gene reference database
Quantitative PCR (qPCR) and community fingerprinting methods, such as the Terminal Restriction Fragment Length Polymorphism (T-RFLP) analysis, are well-suited techniques for the examination of microbial community structures. The use of phylum- and class-specific primers can provide enhanced sensitiv...
year: 2014 - type: Scopus - journal: Environmental Microbiology  - DOI: 10.1111/1462-2920.12350  - Google Schoolar: search

A network-based approach to identify substrate classes of bacterial glycosyltransferases
Bacterial interactions with the environment- and/or host largely depend on the bacterial glycome. The specificities of a bacterial glycome are largely determined by glycosyltransferases (GTs), the enzymes involved in transferring sugar moieties from an activated donor to a specific substrate. Of the...
year: 2014 - type: ISI - journal: BMC Genomics  - DOI: 10.1186/1471-2164-15-349  - Google Schoolar: search

Improved linkage analysis of Quantitative Trait Loci using bulk segregants unveils a novel determinant of high ethanol tolerance in yeast
Bulk segregant analysis (BSA) coupled to high throughput sequencing is a powerful method to map genomic regions related with phenotypes of interest. It relies on crossing two parents, one inferior and one superior for a trait of interest. Segregants displaying the trait of the superior parent are po...
year: 2014 - type: Scopus - journal: BMC Genomics  - DOI: 10.1186/1471-2164-15-207  - Google Schoolar: search

MAGIC: access portal to a cross-platform gene expression compendium for maize
To facilitate the exploration of publicly available Zea mays expression data, we constructed a maize expression compendium, making use of an integration methodology and a consistent probe to gene mapping based on the 5b.60 sequence release of Z. mays. The compendium is made available through a web p...
year: 2014 - type: Scopus - journal: Bioinformatics  - DOI: 10.1093/bioinformatics/btt739  - Google Schoolar: search

Efecto de la perturbación producida por la extracción de arena sobre las micorrizas arbusculares (MA) en un bosque seco tropical.
El objetivo de este estudio fue evaluar el efecto de la extracción de arena sobre los propágulos de micorrizas, en una cronosecuencia de localidades abandonadas y el matorral como ecosistema de referencia. Se seleccionaron localidades en diferentes estados sucesionales después de haber sido aban...
year: 2014 - type: Artículos Publicados de Divulgación Local - journal: Experimentia IV  - Google Schoolar: search

Experiencias de inoculación con micorrizas arbusculares (MA) nativas sobre el crecimiento y sobrevivencia de algunas especies arbóreas del bosque seco tropical y matorral xerófi to
El objetivo de esta investigación fue evaluar el efecto de la inoculación con hongos micorrízicos arbusculares nativos de diferentes localidades sucesionales y del ecosistema de referencia; sobre el crecimiento y sobrevivencia de Piscidia carthagenensis Jacq (Fabaceae) y Caesalpinia mollis (H.B.K...
year: 2014 - type: Artículos Publicados de Divulgación Local - journal: Experimentia IV  - Google Schoolar: search

Efecto de las micorrizas arbusculares sobre las limitaciones estomáticas y no-estomáticas de la fotosíntesis de Piscidia carthagenensis creciendo en un suelo degradado de un matorral xerofítico tropical
El aumento de la extracción de arena ha perturbado grandes extensiones de bosquesvsecos y matorrales xerofíticos en la Península de Macanao (Isla de Margarita, Venezuela), alterando radicalmente el suelo y la vegetación, lo que ha causado limitaciones en el proceso de sucesión y un alto riesgo ...
year: 2014 - type: Artículos Publicados de Divulgación Local - journal: Experimentia IV  - Google Schoolar: search

Genome-scale co-expression network comparison across Escherichia coli and Salmonella enterica serovar Typhimurium reveals significant conservation at the regulon level of local regulators despite their dissimilar lifestyles
Availability of genome-wide gene expression datasets provides the opportunity to study gene expression across different organisms under a plethora of experimental conditions. In our previous work, we developed an algorithm called COMODO (COnserved MODules across Organisms) that identifies conserved ...
year: 2014 - type: ISI - journal: PLoS ONE  - DOI: 10.1371/journal.pone.0102871  - Google Schoolar: search

Cultured arbuscular mycorrhizal fungi and native soil inocula improve seedling development of two pioneer trees in the Andean region
The tree species Alnus acuminata and Morella pubescens, native to South America, are candidates for soil quality improvement and afforestation of degraded areas and may serve as nurse trees for later inter-planting of other trees, including native crop trees. Both species not only form symbioses wit...
year: 2014 - type: Scopus - journal: New Forests  - Google Schoolar: search

Cryptic species revealed by molecular phylogenetic analysis of sequences obtained from basidiomata of Tulasnella
Delimitation of species and the search for a proper threshold for defining phylogenetic species in fungi are under discussion. In this study, morphological and molecular data are correlated to delimit species of Tulasnella, the most important mycobionts of Orchidaceae, which suffer from poor taxonom...
year: 2014 - type: ISI - journal: Mycologia  - DOI: 10.3852/12-386  - Google Schoolar: search

Distinct lipopeptide production systems for WLIP (white line-inducing principle) in Pseudomonas fluorescens and Pseudomonas putida
The interaction of WLIP (white line-inducing principle), a member of the viscosin group of Pseudomonas lipopeptides, with tolaasin, a lipopeptide mycotoxin secreted by Pseudomonas tolaasii, enables identification of the mushroom pathogen relying on formation of a lipopeptide coprecipitate between co...
year: 2013 - type: Scopus - journal: Environmental Microbiology Reports  - DOI: 10.1111/1758-2229.12015  - Google Schoolar: search

Mycorrhizal Preferences And Fine Spatial Structure Of The Epiphytic Orchid Epidendrum Rhopalostele
Premise of the study: The presence of compatible fungi is necessary for epiphytic orchid recruitment. Thus, identifying associated mycorrhizal fungi at the population level is essential for orchid conservation. Recruitment patterns may also be conditioned by factors such as seed dispersal range and ...
year: 2013 - type: ISI - journal: American Journal of Botany  - DOI: 10.3732/ajb.1300069  - Google Schoolar: search

Omics Derived Networks in Bacteria
Understanding the cellular behavior from a systems perspective requires the identification of functional and physical interactions among diverse molecular entities in a cell (i.e. DNA/RNA, proteins and metabolites). Powerful and scalable technologies enabled the generation of genome-wide datasets th...
year: 2013 - type: ISI - journal: Current Bioinformatics  - DOI: 10.2174/1574893611308040011  - Google Schoolar: search

Exploring the Adenylation Domain Repertoire of Nonribosomal Peptide Synthetases Using an Ensemble of Sequence-Search Methods
The introduction of two-dimension (2D) graphs and their numerical characterization for comparative analyses of DNA/RNA and protein sequences without the need of sequence alignments is an active yet recent research topic in bioinformatics. Here, we used a 2D artificial representation (four-color maps...
year: 2013 - type: ISI - journal: PLoS ONE  - DOI: 10.1371/journal.pone.0065926  - Google Schoolar: search

Expression divergence between Escherichia coli and Salmonella enterica serovar typhimurium reflects their lifestyles
Escherichia coli K12 is a commensal bacteria and one of the best-studied model organisms. Salmonella enterica serovar Typhimurium, on the other hand, is a facultative intracellular pathogen. These two prokaryotic species can be considered related phylogenetically, and they share a large amount of th...
year: 2013 - type: ISI - journal: Molecular Biology and Evolution  - DOI: 10.1093/molbev/mst029  - Google Schoolar: search

Reforestation Sites Show Similar and Nested AMF Communities to an Adjacent Pristine Forest in a Tropical Mountain Area of South Ecuador
Arbuscular mycorrhizae are important for growth and survival of tropical trees. We studied the community of arbuscular mycorrhizal fungi in a tropical mountain rain forest and in neighbouring reforestation plots in the area of Reserva Biológica San Francisco (South Ecuador). The arbuscular mycorrhi...
year: 2013 - type: ISI - journal: PLoS ONE  - DOI: 10.1371/journal.pone.0063524  - Google Schoolar: search

Nucleosomes affect local transformation efficiency
Genetic transformation is a natural process during which foreign DNA enters a cell and integrates into the genome. Apart from its relevance for horizontal gene transfer in nature, transformation is also the cornerstone of today's recombinant gene technology. Despite its importance, relatively little...
year: 2012 - type: Scopus - journal: Nucleic Acids Research  - DOI: 10.1093/nar/gks777  - Google Schoolar: search

Genetic and functional characterization of cyclic lipopeptide white-line-inducing principle (WLIP) production by rice rhizosphere isolate pseudomonas putida RW10S2
The secondary metabolite mediating the GacS-dependent growth-inhibitory effect exerted by the rice rhizosphere isolate Pseudomonas putida RW10S2 on phytopathogenic Xanthomonas species was identified as white-line-inducing principle (WLIP), a member of the viscosin group of cyclic lipononadepsipeptid...
year: 2012 - type: Scopus - journal: Applied and Environmental Microbiology  - DOI: 10.1128/AEM.00335-12  - Google Schoolar: search

A combined approach to study the protein glycosylation potential of Lactobacillus rhamnosus GG (LGG).
...
year: 2012 - type: Scopus - journal: Communications in agricultural and applied biological sciences  - DOI: doi  - Google Schoolar: search

Directed module detection in a large-scale expression compendium
Public online microarray databases contain tremendous amounts of expression data. Mining these data sources can provide a wealth of information on the underlying transcriptional networks. In this chapter, we illustrate how the web services COLOMBOS and DISTILLER can be used to identify condition-dep...
year: 2012 - type: Scopus - journal: Methods in Molecular Biology  - DOI: 10.1007/978-1-61779-361-5_8  - Google Schoolar: search

A clustering optimization strategy to estimate species richness of Sebacinales in the tropical Andes based on molecular sequences from distinct DNA regions
Fungi are believed to be diverse in the tropics, but because many groups are only known from their DNA sequences this hampers comparative diversity studies. We investigated mycorrhizal Sebacinales (Basidiomycota) of 67 individuals of Ericaceae and Orchidaceae in a tropical mountain ecosystem in Sout...
year: 2012 - type: ISI - journal: Biodiversity and Conservation  - DOI: 10.1007/s10531-011-0205-y  - Google Schoolar: search

Búsqueda de bacterias con actividad EC 3.2.1.4 (endo-1,4- beta-glucanasa) en Eisenia foetida (Oligochaeta, Lumbricidae)
La lombriz de tierra, Eisenia foetida, es hospedero de numerosos microorganismos simbiontes, muchos de los cuales han sido identificados recientemente, asi? como se ha descrito su actividad enzima?tica. Estos microorganismos suelen presentar actividad enzima?tica de diferente tipo. Algunos podri?an ...
year: 2012 - type: Latindex Catálogo - journal: Revista Ecuatoriana de Medicina y Ciencias Biológicas  - Google Schoolar: search

Colombos: Access port for cross-platform bacterial expression compendia
Background: Microarrays are the main technology for large-scale transcriptional gene expression profiling, but the large bodies of data available in public databases are not useful due to the large heterogeneity. There are several initiatives that attempt to bundle these data into expression compend...
year: 2011 - type: Scopus - journal: PLoS ONE  - DOI: 10.1371/journal.pone.0020938  - Google Schoolar: search

Genome sequence of Rhizobium etli CNPAF512, a nitrogen-fixing symbiont isolated from bean root nodules in Brazil
Rhizobium etli is a Gram-negative soil-dwelling alphaproteobacterium that carries out symbiotic biological nitrogen fixation in close association with legume hosts. R. etli strains exhibit high sequence divergence and are geographically structured, with a potentially dramatic influence on the outcom...
year: 2011 - type: Scopus - journal: Journal of Bacteriology  - DOI: 10.1128/JB.00310-11  - Google Schoolar: search

Analysis of expressed sequence tags derived from a compatible Mycosphaerella fijiensis-banana interaction
Mycosphaerella fijiensis, a hemibiotrophic fungus, is the causal agent of black leaf streak disease, the most serious foliar disease of bananas and plantains. To analyze the compatible interaction of M. fijiensis with Musa spp., a suppression subtractive hybridization (SSH) cDNA library was construc...
year: 2011 - type: Scopus - journal: Plant Cell Reports  - DOI: 10.1007/s00299-011-1008-z  - Google Schoolar: search

COMODO: An adaptive coclustering strategy to identify conserved coexpression modules between organisms
Increasingly large-scale expression compendia for different species are becoming available. By exploiting the modularity of the coexpression network, these compendia can be used to identify biological processes for which the expression behavior is conserved over different species. However, comparing...
year: 2011 - type: Scopus - journal: Nucleic Acids Research  - DOI: 10.1093/nar/gkq1275  - Google Schoolar: search

Non-linear models based on simple topological indices to identify RNase III protein members
Alignment-free classifiers are especially useful in the functional classification of protein classes with variable homology and different domain structures. Thus, the Topological Indices to BioPolymers (TI2BioP) methodology (Agüero-Chapin et al., 2010) inspired in both the TOPS-MODE and the MARCH-I...
year: 2011 - type: Scopus - journal: Journal of Theoretical Biology  - DOI: 10.1016/j.jtbi.2010.12.019  - Google Schoolar: search

Defining species in Tulasnella by correlating morphology and nrDNA ITS-5.8S sequence data of basidiomata from a tropical Andean forest
The genus Tulasnella comprises important orchid mycobionts. Molecular phylogenetic studies on nrITS-5.8S sequences of Tulasnella species previously isolated from mycorrhizas of epiphytic orchids from a tropical Andean forest showed genomic variability among clones which was difficult to interpret as...
year: 2011 - type: ISI - journal: Mycological Progress  - DOI: 10.1007/s11557-010-0692-3  - Google Schoolar: search

Mycorrhiza induced resistance in potato plantlets challenged by Phytophthora infestans
Biological control of soil-borne pathogens by arbuscular mycorrhizal (AM) fungi has been repeatedly demonstrated. However, their role in the control of above-ground hemibiotrophic pathogens is less conclusive. Here, we investigated in vitro the impact of an AM fungus on Phytophthora infestans in pot...
year: 2011 - type: ISI - journal: Physiological and Molecular Plant Pathology  - DOI: 10.1016/j.pmpp.2011.06.005  - Google Schoolar: search

New records of pathogenic fungi on cultivated plants in Panama
Knowledge about the geographical distribution of species of plant pathogenic fungi is fundamental for epidemiology, decision making and recommendations for their control. For many tropical countries like Panama, however, checklists are still very incomplete. In the present publication, 20 species of...
year: 2011 - type: Artículos Publicados de Divulgación Local - journal: MYCOTAXON  - Google Schoolar: search

An alignment-free approach for eukaryotic ITS2 annotation and phylogenetic inference
The ITS2 gene class shows a high sequence divergence among its members that have complicated its annotation and its use for reconstructing phylogenies at a higher taxonomical level (beyond species and genus). Several alignment strategies have been implemented to improve the ITS2 annotation quality a...
year: 2011 - type: ISI - journal: PLoS ONE  - DOI: 10.1371/journal.pone.0026638  - Google Schoolar: search

Diversity Of Terrestrial Microalgae (Including Lichen Photobionts) Along An Altitudinal Gradient In A Tropical Mountain Forest (Ecuador)
DIVERSITY OF TERRESTRIAL MICROALGAE (INCLUDING LICHEN PHOTOBIONTS) ALONG AN ALTITUDINAL GRADIENT IN A TROPICAL MOUNTAIN FOREST (ECUADOR)...
year: 2011 - type: ISI - journal: EUROPEAN JOURNAL OF PHYCOLOGY  - Google Schoolar: search

Atractiellomycetes belonging to the rust lineage (Pucciniomycotina) form mycorrhizae with terrestrial and epiphytic neotropical orchids
Distinctive groups of fungi are involved in the diverse mycorrhizal associations of land plants. All previously known mycorrhiza-forming Basidiomycota associated with trees, ericads, liverworts or orchids are hosted in Agaricomycetes, Agaricomycotina. Here we demonstrate for the first time that Atra...
year: 2010 - type: ISI - journal: Proceedings of the Royal Society B: Biological Sciences  - DOI: 10.1098/rspb.2009.1884  - Google Schoolar: search

Orchids keep the ascomycetes outside: A highly diverse group of ascomycetes colonizing the velamen of epiphytic orchids from a tropical mountain rainforest in Southern Ecuador
Orchid mycorrhizal detection, based only on fungal isolation from roots, is biased due to difficulties in isolating the respective fungi. Previous investigations have shown that mostly ascomycetes, housed in the sheltered compartment of the velamen covering the roots of epiphytic orchids, are isolat...
year: 2010 - type: Scopus - journal: Mycology  - DOI: 10.1080/21501203.2010.526645  - Google Schoolar: search

Mycorrhizal fungi and plant diversity in tropical mountain rainforest of southern Ecuador
Mycorrhizal fungi, because of their obligate symbiotic interaction with plant roots, may either promote or restrict plant diversity depending on broad or narrow plant-fungus relationships. Inventories based on morphotyping and DNA sequencing were carried out on the mycorrhizal fungi associated with ...
year: 2010 - type: Scopus - journal: Tropical Mountain Forest: Patterns and Processes in a Biodiversity Hotspot  - DOI: doi  - Google Schoolar: search

Atractiellomycetes belonging to the 'rust' lineage (Pucciniomycotina) form mycorrhizae with terrestrial and epiphytic neotropical orchids
Distinctive groups of fungi are involved in the diverse mycorrhizal associations of land plants. All previously known mycorrhiza-forming Basidiomycota associated with trees, ericads, liverworts or orchids are hosted in Agaricomycetes, Agaricomycotina. Here we demonstrate for the first time that Atra...
year: 2010 - type: Scopus - journal: Proceedings of the Royal Society B: Biological Sciences  - DOI: 10.1098/rspb.2009.1884  - Google Schoolar: search

Application of mycorrhizal roots improves growth of tropical tree seedlings in the nursery: A step towards reforestation with native species in the Andes of Ecuador
Most tree species in tropical mountain rain forests are naturally associated with arbuscular mycorrhizal fungi. Previous studies in southern Ecuador of 115 tree species revealed that only three species were not associated with arbuscular mycorrhizal fungi. Seedlings of tropical tree species raised i...
year: 2009 - type: ISI - journal: New Forests  - DOI: 10.1007/s11056-009-9143-x  - Google Schoolar: search

Cambios en la biomasa de raíces y micorrizas arbusculares en cultivos itinerantes del Amazonas Venezolano
La asignación de biomasa a la producción de raíces finas en plantas terrestres y la formación de asociaciones simbióticas micorrízico arbusculares (MA) constituyen de importantes adaptaciones en condiciones de baja fertilidad. En un mosaico de agricultura itinerante, conformado por dos ár...
year: 2009 - type: REDALYC - journal: Interciencia  - Google Schoolar: search

Respuesta micorrízica, sobrevivencia y relaciones hídricas del árbol cuchibano (Piscidia piscipula): implicaciones en la recuperación de un bosque seco fuertemente perturbado de la península de Macanao, estado Nueva Esparta.
Ficha técnica...
year: 2009 - type: Artículos Publicados de Divulgación Internacional - journal:   - Google Schoolar: search

Mineralogical characterization of a polymetallic concentrate Portovelo mining district. Bioleaching by a native bacterial consortium
The mining district of Zaruma-Portovelo of southern Ecuador is a deposit of polymetallic sulfides worked since 1908. Currently the small traditional mining operation processes 1800 tons of ore a day, generating environmental waste that is accumulated and systematically discharged into the Calera and...
year: 2009 - type: Scopus - journal: Advanced Materials Research  - DOI: 10.4028/www.scientific.net/AMR.71-73.481  - Google Schoolar: search

Mycorrhizal associations in ferns from southern Ecuador
We conducted a survey on the mycorrhizal status of neotropical ferns, focusing on previously neglected taxa. These include the filmy ferns (Hymenophyllaceae), grammitid ferns (Polypodiaceae), and the genus Elaphoglossum (Dryopteridaceae). Samples were collected at different sites in southern Ecuador...
year: 2009 - type: ISI - journal: American Fern Journal  - DOI: 10.1640/0002-8444-99.4.292  - Google Schoolar: search

An efficient method for the extraction of high-quality fungal total RNA to study the Mycosphaerella fijiensis-Musa spp. interaction
Efficient RNA isolation is a prerequisite for gene expression studies and it has an increasingly important role in the study of plant-fungal pathogen interactions. However, RNA isolation is difficult in filamentous fungi. These organisms are notorious for their rigid cell walls and the presence of h...
year: 2008 - type: Scopus - journal: Molecular Biotechnology  - DOI: 10.1007/s12033-008-9092-1  - Google Schoolar: search

MMM-QSAR recognition of ribonucleases without alignment: Comparison with an HMM model and isolation from Schizosaccharomyces pombe, prediction, and experimental assay of a new sequence
The study of type III RNases constitutes an important area in molecular biology. It is known that the pac1+ gene encodes a particular RNase III that shares low amino acid similarity with other genes despite having a double-stranded ribonuclease activity. Bioinformatics memods based on sequence align...
year: 2008 - type: Scopus - journal: Journal of Chemical Information and Modeling  - DOI: 10.1021/ci7003225  - Google Schoolar: search

Members of Sebacinales subgroup B form mycorrhizae with epiphytic orchids in a neotropical mountain rain forest
Previous investigations revealed that epiphytic orchids in a mountain rain forest in southern Ecuador formed mycorrhizae with diverse members of Tulasnellales. Using specific primers, we now show that the same orchids are also associated with Sebacinales. Ultrastructural observations confirmed the S...
year: 2008 - type: ISI - journal: Mycological Progress  - DOI: 10.1007/s11557-008-0554-4  - Google Schoolar: search

Guilds of mycorrhizal fungi and their relation to trees, ericads, orchids and liverworts in a neotropical mountain rain forest
Mycorrhizas of vascular plants and mycorrhiza-like associations of liverworts and hornworts are integral parts of terrestrial ecosystems, but have rarely been studied in tropical mountain rain forests. The tropical mountain rain forest area of the Reserva Biológica San Francisco in South Ecuador si...
year: 2008 - type: ISI - journal: Basic and Applied Ecology  - DOI: 10.1016/j.baae.2007.03.007  - Google Schoolar: search

Diverse tulasnelloid fungi form mycorrhizas with epiphytic orchids in an Andean cloud forest
The mycorrhizal state of epiphytic orchids has been controversially discussed, and the state and mycobionts of the pleurothallid orchids, occurring abundantly and with a high number of species on stems of trees in the Andean cloud forest, were unknown. Root samples of 77 adult individuals of the epi...
year: 2006 - type: ISI - journal: Mycological Research  - DOI: 10.1016/j.mycres.2006.08.004  - Google Schoolar: search