文献类型： 外文期刊
作者： Zhang, Mingfeng 1 ; Luo, Xiao 1 ; He, Wei 3 ; Zhang, Min 1 ; Peng, Zhirong 2 ; Deng, Huafeng 1 ; Xing, Junjie 1 ;
作者机构： 1.Hunan Univ, Coll Biol, Longping Branch, Changsha 410125, Peoples R China
2.Hunan Acad Agr Sci, Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
3.Cent South Univ Forestry & Technol, Natl Engn Lab Rice & By Prod Deep Proc, Changsha 410004, Peoples R China
关键词： JAZ; jasmonic acid; rice; rice blast; gibberellin; plant immunity
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 3 期
页码：
收录情况： SCI
摘要： JAZ proteins function as transcriptional regulators that form a jasmonic acid-isoleucine (JA-Ile) receptor complex with coronatine insensitive 1 (COI1) and regulate plant growth and development. These proteins also act as key mediators in signal transduction pathways that activate the defense-related genes. Herein, the role of OsJAZ4 in rice blast resistance, a severe disease, was examined. The mutation of OsJAZ4 revealed its significance in Magnaporthe oryzae (M. oryzae) resistance and the seed setting rate in rice. In addition, weaker M. oryzae-induced ROS production and expression of the defense genes OsO4g10010, OsWRKY45, OsNAC4, and OsPR3 was observed in osjaz4 compared to Nipponbare (NPB); also, the jasmonic acid (JA) and gibberellin4 (GA4) content was significantly lower in osjaz4 than in NPB. Moreover, osjaz4 exhibited a phenotype featuring a reduced seed setting rate. These observations highlight the involvement of OsJAZ4 in the regulation of JA and GA4 content, playing a positive role in regulating the rice blast resistance and seed setting rate.
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