Download MendeleyWeiTsing, a pericycle-expressed ion channel, safeguards the stele to confer clubroot resistance.
Wang, W., Qin, L., Zhang, W., Tang, L., Zhang, C., Dong, X., Miao, P., Shen, M., Du, H., Cheng, H., Wang, K., Zhang, X., Su, M., Lu, H., Li, C., Gao, Q., Zhang, X., Huang, Y., Liang, C., Zhou, J.M., Chen, Y.H.(2023) Cell 186: 2656-2671.e18
- PubMed: 37295403
- DOI: https://doi.org/10.1016/j.cell.2023.05.023
- Primary Citation of Related Structures:
8HF2 - PubMed Abstract:
Plant roots encounter numerous pathogenic microbes that often cause devastating diseases. One such pathogen, Plasmodiophora brassicae (Pb), causes clubroot disease and severe yield losses on cruciferous crops worldwide. Here, we report the isolation and characterization of WeiTsing (WTS), a broad-spectrum clubroot resistance gene from Arabidopsis. WTS is transcriptionally activated in the pericycle upon Pb infection to prevent pathogen colonization in the stele. Brassica napus carrying the WTS transgene displayed strong resistance to Pb. WTS encodes a small protein localized in the endoplasmic reticulum (ER), and its expression in plants induces immune responses. The cryoelectron microscopy (cryo-EM) structure of WTS revealed a previously unknown pentameric architecture with a central pore. Electrophysiology analyses demonstrated that WTS is a calcium-permeable cation-selective channel. Structure-guided mutagenesis indicated that channel activity is strictly required for triggering defenses. The findings uncover an ion channel analogous to resistosomes that triggers immune signaling in the pericycle.
Organizational Affiliation:
State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China; Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China. Electronic address: weiwang@genetics.ac.cn.
