Searcher

Results (1):

(Searched words can be inside PDF files)
PDF 916.8 KB (1050 downloads)

Tomato crop is one of the most important vegetables because of its high demand. During the crop cycle it can be attacked by different pathogens, so the use of Plant Growth Promoting Rhizobacteria (PGPR) is an option for the protection of plants against pathogens. PGPR can be set endophytically inside the plant and trigger various defense mechanisms. One such mechanism is the synthesis of antimicrobial peptides. The aim of this research was to evaluate the protection of Solanum lycopersicum var. Río Grande previously inoculated with PGPR against infection with the necrotrophic pathogen, Sclerotium rolfsii. The percentage of mortality and peptides: defensin and snaking expression were evaluated. Combined experiments with Pseudomonas pseudoalcaligenes and Azospirillum brasilense inoculation and subsequent confrontation with S. rolfsii were performed. In plants treated with P. pseudoalcaligenes, mortality percentage was 40% lower than in control plants. Plants treated with A. brasilense were 20% lower. The expression of defensin and snakin messengers was higher in both cases for plants inoculated with PGPR. Based on these results, the use of PGPR is proposed as a biological alternative against S. rolfsii and could be evaluated for other soil pathogens.