A5022446786- Legume Nitrogen Fixing Symbiosis
- Plant-Microbe Interactions and Immunity
- Plant Pathogenic Bacteria Studies
- Genomics and Phylogenetic Studies
- Nematode management and characterization studies
- Plant Pathogens and Fungal Diseases
- Microbial Community Ecology and Physiology
- Vector-borne infectious diseases
- Cocoa and Sweet Potato Agronomy
- Insect symbiosis and bacterial influences
- Viral Infections and Vectors
- Burkholderia infections and melioidosis
- Antifungal resistance and susceptibility
- Botanical Research and Applications
- Cystic Fibrosis Research Advances
- Plant and soil sciences
- Essential Oils and Antimicrobial Activity
- Mycorrhizal Fungi and Plant Interactions
- Plant tissue culture and regeneration
- Agronomic Practices and Intercropping Systems
- Vector-Borne Animal Diseases
- Plant Disease Resistance and Genetics
- Enzyme Production and Characterization
- Chromium effects and bioremediation
- Microbial Metabolites in Food Biotechnology
Instituto Politécnico Nacional
2016-2025
Tecnológico Nacional de México
2023
Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias
2020
Universidad Nacional Autónoma de México
1997-2013
Brazilian Agricultural Research Corporation
2012
KU Leuven
2005-2011
École Nationale Vétérinaire de Toulouse
2007
Ecologie Microbienne Lyon
2007
Vrije Universiteit Brussel
2007
Université Claude Bernard Lyon 1
2007
ABSTRACT The genus Burkholderia comprises 19 species, including vietnamiensis which is the only known N 2 -fixing species of this bacterial genus. first isolates B. were recovered from rhizosphere rice plants grown in a phytotron, but its existence natural environments and geographic distribution not reported. In present study, most environment field-grown maize coffee cultivated widely separated regions Mexico phenotypically identified as cepacia using API 20NE system. Nevertheless, number...
Burkholderia sensu lato is a large and complex group, containing pathogenic, phytopathogenic, symbiotic non-symbiotic strains from very wide range of environmental (soil, water, plants, fungi) clinical (animal, human) habitats. Its taxonomy has been evaluated several times through the analysis 16S rRNA sequences, concantenated 4⁻7 housekeeping gene lately by genome sequences. Currently, division this group into Burkholderia, Caballeronia, Paraburkholderia, Robbsia strongly supported...
In an ecological survey of nitrogen-fixing bacteria isolated from the rhizosphere and as endophytes sugarcane, maize teosinte plants in Brazil, Mexico South Africa, a new phylogenetically homogeneous group N 2 -fixing was identified within genus Burkholderia . This polyphasic taxonomic study included microscopic colony morphology, API 20NE tests growth on different culture media at pH temperatures, well carbon source assimilation whole-cell protein pattern analysis. Analysis 16S rRNA gene...
ABSTRACT Burkholderia strains are promising candidates for biotechnological applications. Unfortunately, most of these belong to species the cepacia complex (Bcc) involved in human infections, hampering potential Novel diazotrophic species, phylogenetically distant from Bcc have been discovered recently, but their environmental distribution and relevant features agro-biotechnological applications little known. In this work, occurrence N 2 -fixing rhizospheres rhizoplanes tomato plants field...
It was shown recently that the genus Burkholderia is rich in N 2 -fixing bacteria are associated with plants. A group of these diazotrophic isolates identical or very similar 16S rDNA restriction patterns [designated amplified analysis (ARDRA) genotypes 13, 14 and 15] selected a polyphasic taxonomic study performed, which included new were recovered from rhizospheres, rhizoplanes internal tissues maize, sugarcane coffee Morphological, physiological biochemical features, as well multi-locus...
Burkholderia is a diverse and dynamic genus, containing pathogenic species as well that form complex interactions with plants. Pathogenic strains, such B. pseudomallei mallei, can cause serious disease in mammals, while other strains are opportunistic pathogens, infecting humans or animals compromised immune system. Although some of the pathogens known to promote plant growth even fix nitrogen, risk infection infants, elderly, people who immunocompromised has not only resulted restriction on...
Small genes (<150 nucleotides) have been systematically overlooked in phage genomes. We employ a large-scale comparative genomics approach to predict >40,000 small-gene families ∼2.3 million genome contigs. find that small genomes are approximately 3-fold more prevalent than host prokaryotic Our enriches for translated microbiomes, suggesting the identified coding. More 9,000 encode potentially secreted or transmembrane proteins, 5,000 predicted anti-CRISPR and 500 antimicrobial proteins. By...
In a previous study, nitrogen-fixing isolates were recovered from the rhizosphere of maize and surface-sterilized leaves sugar cane cultivated in Rio de Janeiro, Brazil. On basis 16S rRNA gene sequence similarities, these identified as belonging to genus Burkholderia , whole-cell-protein profiles demonstrated that they are closely related each other. present novel roots different sugar-cane varieties diverse geographical regions Twenty-one analysed using polyphasic taxonomy criteria,...
ABSTRACT Until recently, diazotrophy was known in only one of the 30 formally described species Burkholderia . Novel N 2 -fixing plant-associated such as B. unamae , tropica and xenovorans have been described, but their environmental distribution is scarcely known. In present study, occurrence associated with different varieties sugarcane maize growing regions Mexico Brazil analyzed. Only 111 out more than 900 isolates recovered had ability demonstrated by acetylene reduction assay. All also...
ABSTRACT Based on partial 16S sequences, we previously described a novel group of nonsymbiotic, acetylene reduction activity-positive actinomycetes which were isolated from surface-sterilized roots Casuarina equisetifolia growing in Mexico. An amplified rRNA restriction analysis confirmed that these are distinct Frankia , finding substantiated by gene phylogenetic two the Mexican isolates. Further support for being separate comes very low DNA-DNA homology was found. Nevertheless, isolates...
In the frame of a survey potentially endophytic N 2 -fixing Burkholderia associated with maize in Mexico, its country origin, soil an indigenous field near Oaxaca was studied. Under laboratory conditions, plant seedlings two ancient varieties were used as trap to select endophyte candidates from sample. Among fixers isolated inside tissues and able grow on PCAT medium, most abundant isolates belonged genus (API 20NE, rrs sequences). Representative obtained roots shoots different plants...
Genome analysis of fourteen mimosoid and four papilionoid beta-rhizobia together with reference alpha-rhizobia for both nodulation (nod) nitrogen-fixing (nif/fix) genes has shown phylogenetic congruence between 16S rRNA/MLSA (combined rRNA gene sequencing multilocus sequence analysis) nif/fix genes, indicating a free-living diazotrophic ancestry the beta-rhizobia. However, deeper genomic revealed complex symbiosis acquisition history in that clearly separates nodulating groups....