数字农科院2.0

OsELS6 regulates rice leaf senescence differently in vitro and in vivo via the jasmonic acid pathway

文献类型： 外文期刊

作者： Erhui Xiong;Limin Wu;Yaohuang Jiang;Yaping Zhao;Xiaoling Zhi;Chen Zhang;Xiyue Zhang;Xulian Qu;Yanli Zhang;Shanshan Chu;Banpu Ruan;Yongqing Jiao;Quanzhi Zhao;Qian Qian;Yanchun Yu

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期刊名称： Plant Physiology

ISSN： 1532-2548

年卷期： 2025 年 199 卷 2 期

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收录情况： SCIE（2025版）

摘要： Leaf senescence is a crucial trait that significantly impacts crop quality and yield. However, whether plant leaf senescence genes are regulated by the same mechanisms in vitro and in vivo has not been determined. Here, we screened a rice (Oryza sativa) leaf senescence mutant exhibiting a delayed leaf senescence phenotype in vitro and an early leaf senescence phenotype in vivo. Map-based cloning revealed that these phenotypes were caused by OsELS6, which encodes ABERRANT LATERAL ROOT FORMATION4 (ALF4), a protein that inhibits SKP1-CUL1-F box protein (SCF) E3 ligase activity. In addition, OsELS6 interacted with the U-box E3 ligase OsHUB1, which may be involved in seed development, and with OsCDC48, which is involved in leaf senescence. Integrated transcriptomic, proteomic, and ubiquitomic analyses, as well as exogenous application of jasmonic acid (JA), demonstrated that OsELS6 is related to OsCDC48 and plays opposite roles in rice leaf senescence in vitro and in vivo via the JA pathway. This study elucidated the regulatory mechanisms of OsELS6 in rice leaf senescence in vitro and in vivo, revealing that JA plays a key role in the regulation of leaf senescence by OsELS6 and OsCDC48.

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