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Lyapina, Irina; Filippova, Anna; Kovalchuk, Sergey; Ziganshin, Rustam; Mamaeva, Anna; Lazarev, Vassili; Latsis, Ivan; Mikhalchik, Elena; Panasenko, Oleg; Ivanov, Oleg; Ivanov, Vadim; Fesenko, Igor
Plant molecular biology, 05/2021, Letnik: 106, Številka: 1-2Journal Article
Plants utilize a plethora of peptide signals to regulate their immune response. Peptide ligands and their cognate receptors involved in immune signaling share common motifs among many species of vascular plants. However, the origin and evolution of immune peptides is still poorly understood. Here, we searched for genes encoding small secreted peptides in the genomes of three bryophyte lineages—mosses, liverworts and hornworts—that occupy a critical position in the study of land plant evolution. We found that bryophytes shared common predicted small secreted peptides (SSPs) with vascular plants. The number of SSPs is higher in the genomes of mosses than in both the liverwort Marchantia polymorpha and the hornwort Anthoceros sp . The synthetic peptide elicitors—AtPEP and StPEP—specific for vascular plants, triggered ROS production in the protonema of the moss Physcomitrella patens , suggesting the possibility of recognizing peptide ligands from angiosperms by moss receptors. Mass spectrometry analysis of the moss Physcomitrella patens , both the wild type and the Δ cerk mutant secretomes, revealed peptides that specifically responded to chitosan treatment, suggesting their role in immune signaling.
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