Comparative analysis of secreted peptide expression during defense response in angiosperms and spore plants
Small secreted peptides (SSPs) play important role in regulating immune response of plants, however, their evolution remains poorly studied. Researchers from the Laboratory of System Analysis of Proteins and Peptides and the Laboratory of Neuroreceptors and Neuroregulators IBCh RAS, as well as SRI PCM, analyzed transcriptomes of angiosperms and spore plants and compared the expression of genes of known SSPs in response to phytopathogens infection. The role of EPFL, MEG, and PSY peptides in regulating the immune response in both groups of organisms was shown. In addition, previously unknown PSY-like SSPs were discovered in bryophytes and their biological activity was analyzed. The work was supported by the RSF grant No. 23-74-10048 and published in the Physiologia plantarum.
march 18, 2025