RALF‐like peptide improves the colonization of endophytic Colletotrichum tofieldiae through interacting with plant receptor‐like kinase

• DOI: 10.1111/ppa.13788
• Publication Date: 2023-08-07T08:58:57Z
• Authors: Ye Liao; Xiangyu Wen; Jingyuan Zheng; Xin Li; Xuelei Deng; Xinqiu Tan; Xiuhui Liang; Xi Yi; Hongdong Liao
• Keywords: Endophyte; Colletotrichum; Economic shortage

Abstract Endophytes can colonize a host plant without inducing obvious disease symptoms. Elicitors from endophytes may play important roles in balancing endophyte colonization. We identified novel endophytic elicitor Colletotrichum tofieldiae , Ct RALF, that has structural and functional characteristics similar to those of rapid alkalinization factor (RALF) peptides Arabidopsis thaliana . found RALF directly interact with the receptor‐like kinase FERONIA (FER). The colonization FER mutant plants by hyphae C. was obviously reduced compared on wild‐type plants. Furthermore, interaction regulated symbiotic signals triggering calcium waves, inhibiting reactive oxygen species bursts, increasing mitogen‐activated protein phosphorylation reducing stabilization MYC2. Collectively, these results suggested homologue improve their symbiosis interacting plant‐encoded FER.