Stimulation of the Defense Mechanisms of Potatoes to a Late Blight Causative Agent When Treated with Bacillus subtilis Bacteria and Chitosan Composites with Hydroxycinnamic Acids

• DOI: 10.3390/microorganisms11081993
• Publication Date: 2023-08-02T14:57:33Z
• Authors: Liubov Yarullina; Ekaterina A. Cher...; Guzel F. Burkhanova; Antonina V. Sorokan; Evgenia A. Zaikina; Vyacheslav O. Tsv...; Ildar S. Mardanshin; Ildus Y. Fatkullin; Joanna N. Kalatskaja; Ninel A. Yalouskaya; Victoria V. Nikal...
• Keywords: Phytophthora infestans; Pathogenesis-related protein

Phytophthora infestans is, worldwide, one of the main causal agents epiphytotics in potato plantings. Prevention strategies demand integrated pest management, including modeling beneficial microbiomes agroecosystems combining microorganisms and natural products. Chitooligosaccharides their derivatives have great potential to be used by agrotechnology due ability elicit plant immune reactions. The effect Bacillus subtilis 26D 11VM conjugates chitin with hydroxycinnamates on late blight pathogenesis was evaluated. Mechanisms for increasing resistance plants were associated activation antioxidant system an increase level gene transcripts that encode PR proteins: basic protective protein (PR-1), thaumatin-like (PR-5), protease inhibitor (PR-6), peroxidase (PR-9). revealed expression marker genes systemic acquired induced under influence combined treatment B. indicates that, this case, development reactions proceeds synergistically, where primes genes, chitosan composites act as a trigger expression.