OsbZIP53 Negatively Regulates Immunity Response by Involving in Reactive Oxygen Species and Salicylic Acid Metabolism in Rice
文献类型： 外文期刊
第一作者： Lijuan, Wu
作者： Lijuan, Wu;Cong, Han;Huimei, Wang;Yuchang, He;Hai, Lin;Lei, Wang;Zhiguo, E.;Chen, Chen
作者机构：
关键词： hypersensitive response; reactive oxygen species metabolism; rice immunity; salicylic acid; transcription factor; OsbZIP53
期刊名称：RICE SCIENCE （ 影响因子：4.8； 五年影响因子：5.5 ）
ISSN： 1672-6308
年卷期： 2024 年 31 卷 2 期
页码：
收录情况： SCI
摘要： The basic region/leucine zipper (bZIP) transcription factors play important roles in plant development and responses to abiotic and biotic stresses. OsbZIP53 regulates resistance to Magnaporthe oryzae in rice by analyzing APIP5-RNAi transgenic plants. To further investigate the biological functions of OsbZIP53, we generated osbzip53 mutants using CRISPR/Cas9 editing and also constructed OsbZIP53 over-expression transgenic plants. Comprehensive analysis of phenotypical, physiological, and transcriptional data showed that knocking-out OsbZIP53 not only improved disease resistance by inducing a hypersensitivity response in plants, but also regulated the immune response through the salicylic acid pathway. Specifically, disrupting OsbZIP53 increased H2O2 accumulation by promoting reactive oxygen species generation through up-regulation of several respiratory burst oxidase homologs (Osrboh genes) and weakened H2O2 degradation by directly targeting OsMYBS1. In addition, the growth of osbzip53 mutants was seriously impaired, while OsbZIP53 over-expression lines displayed a similar phenotype to the wild type, suggesting that OsbZIP53 has a balancing effect on rice immune response and growth.
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