CEP peptide induces susceptibility of Arabidopsis thaliana to non-adapted pathogens

Aprilia Nur Fitrianti, Thanh Luan Mai, Le Thi Phuong, Hiyori Monden, Norika Shiiba, Hidenori Matsui, Yoshiteru Noutoshi, Mikihiro Yamamoto, Yuki Ichinose, Tomonori Shiraishi, Kazuhiro Toyoda

Research output: Contribution to journalArticlepeer-review

Abstract

CEP peptide was synthesized and tested for induction of disease susceptibility using Arabidopsis Col-0. When Colletotrichum tropicale was used as a non-adapted fungal pathogen, the conidia germinated to form hyphal-like structures, which successfully penetrated epidermis, eventually causing disease symptoms. In such case, PEN2-, but not PEN3-dependent resistance was likely suppressed by CEP peptide. Similarly, the CEP peptide-mediated disease susceptibility was also effective to a non-adapted bacterial pathogen. Notably, such induced susceptibility was also evident on Arabidopsis mutants lacking the previously identified receptors, suggesting that the CEP peptide modulates Arabidopsis immunity through an unidentified receptor(s).

Original languageEnglish
JournalJournal of General Plant Pathology
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • Arabidopsis immunity
  • c-terminally encoded peptide (CEP)
  • Defense suppression
  • Endogenous suppressor (ES)
  • Induced susceptibility

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

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