期刊
PLANT JOURNAL
卷 77, 期 5, 页码 748-756出版社
WILEY-BLACKWELL
DOI: 10.1111/tpj.12425
关键词
ER-quality control; Erdj3b; SDF2; plant immunity; CRT3; SOBIR1
资金
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Chinese Ministry of Science and Technology
Receptor-like kinases play diverse roles in plant biology. Arabidopsis BAK1-INTERACTING RECEPTOR-LIKE KINASE 1 (BIR1) functions as a negative regulator of plant immunity. bir1-1 mutant plants display spontaneous cell death and constitutive defense responses that are dependent on SUPPRESSOR OF BIR1,1 (SOBIR1) and PHYTOALEXIN DEFICIENT4 (PAD4). Here we report that mutations in three components of ER quality control, CALRETICULIN3 (CRT3), ER-LOCALIZED DnaJ-LIKE PROTEIN 3b (ERdj3b) and STROMAL-DERIVED FACTOR-2 (SDF2), also suppress the spontaneous cell death and constitutive defense responses in bir1-1. Further analysis revealed that accumulation of the SOBIR1 protein is reduced in crt3-1 and erdj3b-1 mutant plants. These data suggest that ER quality control plays important roles in the biogenesis of SOBIR1, and is required for cell death and defense responses in bir1-1.
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