WRKY蛋白质结构域
生物
磷酸化
转录因子
泛素
细胞生物学
茉莉酸
信号转导
水稻
激酶
泛素连接酶
先天免疫系统
水杨酸
植物对草食的防御
蛋白激酶A
串扰
生物化学
基因
基因表达
受体
光学
物理
转录组
作者
Shuai Wang,Shuying Han,Xiangui Zhou,Changjiang Zhao,Lina Guo,Junqi Zhang,Fei Liu,Qixin Huo,Wensheng Zhao,Zejian Guo,Xujun Chen
出处
期刊:The Plant Cell
[Oxford University Press]
日期:2023-03-03
卷期号:35 (6): 2391-2412
被引量:38
标识
DOI:10.1093/plcell/koad064
摘要
Abstract Mitogen-activated protein kinase (MPK) cascades play vital roles in plant innate immunity, growth, and development. Here, we report that the rice (Oryza sativa) transcription factor gene OsWRKY31 is a key component in a MPK signaling pathway involved in plant disease resistance in rice. We found that the activation of OsMKK10-2 enhances resistance against the rice blast pathogen Magnaporthe oryzae and suppresses growth through an increase in jasmonic acid and salicylic acid accumulation and a decrease of indole-3-acetic acid levels. Knockout of OsWRKY31 compromises the defense responses mediated by OsMKK10-2. OsMKK10-2 and OsWRKY31 physically interact, and OsWRKY31 is phosphorylated by OsMPK3, OsMPK4, and OsMPK6. Phosphomimetic OsWRKY31 has elevated DNA-binding activity and confers enhanced resistance to M. oryzae. In addition, OsWRKY31 stability is regulated by phosphorylation and ubiquitination via RING-finger E3 ubiquitin ligases interacting with WRKY 1 (OsREIW1). Taken together, our findings indicate that modification of OsWRKY31 by phosphorylation and ubiquitination functions in the OsMKK10-2-mediated defense signaling pathway.
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