A5008790330- Plant-Microbe Interactions and Immunity
- Microbial bioremediation and biosurfactants
- Plant and soil sciences
- Plant Pathogens and Fungal Diseases
- Bacterial Genetics and Biotechnology
- Polyamine Metabolism and Applications
- Insect and Pesticide Research
- Microbial Community Ecology and Physiology
- Insect and Arachnid Ecology and Behavior
- Legume Nitrogen Fixing Symbiosis
- Plant and animal studies
- Mycotoxins in Agriculture and Food
- Plant Pathogenic Bacteria Studies
- Mycorrhizal Fungi and Plant Interactions
- Botanical Research and Applications
- Entomopathogenic Microorganisms in Pest Control
- Microbial Metabolic Engineering and Bioproduction
- Banana Cultivation and Research
- Nematode management and characterization studies
- Free Radicals and Antioxidants
- Antioxidant Activity and Oxidative Stress
- Wastewater Treatment and Nitrogen Removal
- Agricultural and Food Production Studies
- Enzyme Production and Characterization
- Plant Disease Resistance and Genetics
Universidad Autónoma de Guerrero
2017-2024
Universidad Nacional Autónoma de México
2009-2016
Instituto de Investigaciones en Ciencia y Tecnología de Materiales
2016
Mine tailings contain high concentrations of heavy metals such as As, Pb, Cu, Mn, and Fe, which are detrimental to the health humans environment. In at El Fraile mine in Guerrero, Mexico, some plant species apparently tolerant can be found growing tailings. These plants could associating with metal-tolerant bacteria that promote growth improve biomass production, these a useful alternative for bacteria-assisted phytoremediation. The objective this study was isolate detected Fraile-Taxco,...
The objective of this research is to test the effects copper on color pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. were exposed a low concentration (1 mg/L; experimental treatment) and forty-eight used as controls (no added water). As result experiment, it was found that with more are significantly redder than those designated (hue (500–700 nm): P = 0.0015; red chroma (625–700 P<0.0001). These results indicate may from exposure challenge commonly held view...
Azotobacter vinelandii is a bacterium which undergoes differentiation process leading to the formation of metabolically dormant cysts. During encystment process, A. produces alkylresorcinol lipids (ARs) that replace membrane phospholipids and are also components layers covering cyst. The synthesis ARs in has been shown occur by activity enzymes encoded arsABCD operon, expressed only during process. Also, production be dependent on stationary-phase sigma factor RpoS, implicated control other...
ABSTRACT During encystment of Azotobacter vinelandii , a family alkylresorcinols (ARs) and alkylpyrones (APs) are synthesized. In the mature cyst, these lipids replace membrane phospholipids also components layers covering cyst. this study, A. strains unable to synthesize ARs were isolated after mini-Tn 5 mutagenesis. Cloning nucleotide sequencing affected loci revealed presence transposons within arsA gene previously reported arsABCD cluster, which encodes type I fatty acid synthase. A...
Plant growth promoting rhizobacteria is a beneficial microbe colonizing plant roots, which enhances crop productivity and offers an attractive way to replace chemical fertilizers, pesticides, supplements.In Mexico, the corn (Zea mays L.) important annual gramineae with high volume of global production because favorable environmental socioeconomic situation.In this study isolation new strains bacteria under different conditions will enable further research avenues better use capacities...
Upon encystment induction, Azotobacter vinelandii produces the phenolic lipids alkylresorcinols (ARs) that are structural components of cysts. The enzymes responsible for ARs synthesis encoded in arsABCD operon, whose expression is activated by ArpR. transcription arpR initiated from an RpoS dependent promoter. nitrogen-related phosphotransferase system (PTSNtr) a global regulatory present Gram negative bacteria. It comprises EINtr, NPr and EIIANtr proteins ptsP, ptsO ptsN genes...
Azotobacter vinelandii is a soil bacterium that undergoes differentiation process forms cysts resistant to desiccation. During encystment, family of alkylresorcinols lipids (ARs) are synthesized and become part the membrane also components outer layer covering cyst, where they play structural role. The synthesis ARs in A. has been shown occur by activity enzymes encoded arsABCD operon. expression this operon activated ArpR, LysR-type transcriptional regulator whose transcription occurs...
Water activity (aw) influences the growth of fungi as well biosynthesis ochratoxin A (OTA). The objective this study was to obtain critical storage conditions at which coffee beans are not susceptible deteriorative physical changes and quantification OTA in dry cherries green-coffee after 60 days 35°C. aw significantly affected color, texture, morphology storing. Three different genera were isolated from samples, Aspergillus, Rhizopus, Penicillium. analyzed showed a high concentration...
Pesticides are used to control pests and diseases in agricultural fields, however, these agrochemicals can cause acute chronic poisoning farmers.An observational, cross-sectional study was carried out on farmers, with the objective of knowing use management pesticides four areas State Guerrero: Huitziltepec, Chichihualco, Quechultenango La Ceniza estimating prevalence poisonings this population.Materials methods: a questionnaire 35 questions related applied 407 farmers from areas.Results:...
Objective: To assess the use of native yeasts on yield and organoleptic characteristics artisanal mezcal in Guerrero, Mexico. Design/Methodology/Approach: Native from fermentation vats containing Agave angustifolia A. cupreata were subjected to molecular isolation identification three regions state Guerrero. A consortium was designed used produce mezcal, using as a substrate. The experimental (with yeasts) control (without yeasts, only producer lore) compared. Finally, physicochemical...
Abstract Marine parasite communities can exhibit temporal and spatial changes in response to seasonal local variations several biotic abiotic environmental factors. Limited attention has been given the influence of factors, so their effects on community structure remain unclear. A total 496 specimens Euthynnus lineatus were collected over a 7‐year period (2012–2018) from Acapulco Bay, Mexico. Their analyzed determine if they experience interannual due Thirty‐three metazoan species recovered...
Bacillus licheniformis M2-7 is a heat-resistant bacterium able to biotransform polycyclic aromatic hydrocarbons.It can transform wide range of these compounds as naphthalene, phenanthrene, pyrene and benzo[a]pyrene.Benzo[a]pyrene hydrocarbon high molecular weight considered potentially toxic carcinogenic for humans.Aiming discover the genes involved in biotransformation benzo[a]pyrene, we made B. genomic library E. coli.We isolated two coli strains that were grow minimal salt medium...
The mining activity has left mine tailings with high quantities of heavy metals and metalloids. Due their extreme toxicity, they represent a hostile environment for microbial colonization; however, there are metalotolerant bacteria in these wastes, this is attributed to mechanisms bioaccumulation biotransformation metals. native from El Fraile have developed adaptation that allow them persist toxic environment, thus, the objective study was isolate identify ability tolerate, bioaccumulate or...
Phenolic glycosides, widely recognized for their nutraceutical properties exist in nature as α- and β-glycosides.
Petroleum derivates used in energy production are gravely pollutants for the ecosystem, especially aquatic environments and human health. This study aimed to isolate hydrocarbons-degrading bacteria from hot springs. Three strains of hydrocarbondegrading strains, belonging Bacillus one genus Lysinibacillus were isolated. These tolerate temperatures 65 100 ºC able degrade grow on BH medium supplemented with gasoline diesel. Strain M2-7 shared % 16S rRNA identity licheniformis was only pyrene...