衰老
生物
茉莉酸
细胞生物学
转录因子
抑制因子
化学
生物化学
基因
作者
Xiaowei Zhang,Rui Xu,Yankai Liu,Chun‐Xiang You,Jianping An
出处
期刊:Plant Journal
[Wiley]
日期:2023-06-15
卷期号:115 (6): 1599-1618
被引量:12
摘要
SUMMARY Wounding stress leads to leaf senescence. However, the underlying molecular mechanism has not been elucidated. In this study, we investigated the role of the MdVQ10–MdWRKY75 module in wound‐induced leaf senescence. MdWRKY75 was identified as a key positive modulator of wound‐induced leaf senescence by activating the expression of the senescence‐associated genes MdSAG12 and MdSAG18 . MdVQ10 interacted with MdWRKY75 to enhance MdWRKY75‐activated transcription of MdSAG12 and MdSAG18 , thereby promoting leaf senescence triggered by wounding. In addition, the calmodulin‐like protein MdCML15 promoted MdVQ10 ‐mediated leaf senescence by stimulating the interaction between MdVQ10 and MdWRKY75. Moreover, the jasmonic acid signaling repressors MdJAZ12 and MdJAZ14 antagonized MdVQ10‐mediated leaf senescence by weakening the MdVQ10–MdWRKY75 interaction. Our results demonstrate that the MdVQ10–MdWRKY75 module is a key modulator of wound‐induced leaf senescence and provides insights into the mechanism of leaf senescence caused by wounding.
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