Trichoderma spp colonizes the plant rhizosphere and provides pathogen resistance, abiotic stress tolerance, enhance growth development. We evaluated Arabidopsis-Trichoderma interaction using a split system in which atroviride virens were grown on PDA or MS medium. Arabidopsis was significantly increased at 3 5 days post-inoculation with both species, when fungal strains interaction. The analysis of DR5:uidA reporter line revealed greater auxin accumulation root tips fungi hair-defective...

Abstract Seeds of Opuntia spp. have physiological dormancy; they need a period after‐ripening to break dormancy, and the embryos low growth potential. We evaluated combined effects seed age presence fungi on testa germination streptacantha , an abundant species in Chihuahuan Desert (Mexico), assuming that older seeds broken dormancy can reduce mechanical resistance germination. In preliminary experiment, we found no 9‐year‐old (1998) freshly collected (2007) seeds. However, obtained 67% 27%...

Proteins with glycine-rich signatures have been reported in a wide variety of organisms including plants, mammalians, fungi, and bacteria. Plant protein genes exhibit developmental tissue-specific expression patterns. Herein, we present the characterization AtGRDP2 gene using Arabidopsis null knockdown mutants and, lettuce over-expression lines. encodes short domain protein, containing DUF1399 putative RNA recognition motif. transcript is mainly expressed floral organs, its deregulation...

Objective: To determine the post-harvest physiological behavior and quality changes of tomato fruits (Solanum lycopersicum L.) grown under saline stress conditions. Design/methodology/approach: Tomato fruit variables (firmness, total soluble solids, titratable acidity pH), along with respiration rate weight loss were assessed at harvest after seven days storage room temperature. These parameters compared between (250 mM sodium chloride) non-stressed control fruits. Results: exhibited higher...

Jatropha dioica Sessé (JD) is a plant from arid and semiarid areas of Mexico, has been linked to medicinal uses. Due the current limitation agrochemicals in agriculture post-harvest due environmental effects, health resistance phytopathogenic microorganisms, it presumed that secondary metabolites J. can act as an alternative biological control. The bactericidal fungistatic activity hydroalcoholic extracts (ethanol methanol) on Botrytis cinerea, Fusarium oxysporum Pseudomonas...

Due to their secondary metabolite content, plant extracts are an alternative for controlling pathogenic organisms in agriculture and post-harvest operations. Botrytis cinerea Pseudomonas syringae among the causative agents of diseases losses agricultural production. The species Larrea tridentata is abundant arid semi-arid zones Mexico has no defined use; however, it contains metabolites with microbicidal potential that could aid biological control enhance its harvest status. Growth...

DnaJ proteins are essential co-chaperones involved in abiotic and biotic stress responses. Arabidopsis AtDjA3 gene encodes a molecular co-chaperone of 420 amino acids, which belongs to the J-protein family. In this study, we report functional characterization using knockout line designated j3 35S::AtDjA3 overexpression lines. Loss function was associated with small seed production. fact, mutant seeds showed reduction 24% weight compared Col-0 seeds. Expression analysis that modulated...

Recently, we found that fungi are involved in breaking seed dormancy of Opuntia streptacantha, and the effect on seeds is species-specific. However, germination from other spp has not been evaluated. Thus, evaluated four fungal species (Penicillium chrysogenum, Phoma sp., Trichoderma harzianum, koningii) leucotricha, an abundant Chihuahuan Desert, Mexico. We inoculated with had higher than control seeds. spp. were most effective. Our results strongly indicate O. leucotricha. suggest these...

During plant interaction with beneficial microorganisms, fungi secrete a battery of elicitors that trigger defenses against pathogenic microorganisms. Among the elicitor molecules secreted by Trichoderma are cerato-platanin proteins, such as EPL1, from atroviride. In this study, Arabidopsis thaliana plants express TaEPL1 gene were challenged phytopathogens to evaluate whether expression EPL1 confers increased resistance bacterial pathogen Pseudomonas syringae and necrotrophic fungus Botrytis...

Las zonas áridas, semiáridas e hiperáridas de México representan el 63% la superficie nacional.

Cold stress impedes the growth and development of plants, restricts geographical distribution plant species, impacts crop productivity. In this study, we analyzed

The Arabidopsis thaliana glycine-rich domain protein 2 (AtGRDP2) gene encodes a of unknown function that is involved in plant growth and salt stress tolerance. AtGRDP2 (787 aa, At4g37900) constituted by three domains: DUF1399 located at the N-terminus, potential RNA Recognition Motif (RRM) central region, short C-terminus. Herein, we analyzed subcellular localization as GFP translational fusion found it was localized cytosol nucleus tobacco leaf cells. Truncated versions showed or RRM...