衰老
花瓣
茉莉酸
茉莉酸
细胞生物学
生物
抑制因子
茉莉酸甲酯
植物
拟南芥
生物化学
水杨酸
基因表达
基因
突变体
作者
Changxi Chen,Yanxing Ma,Lanxin Zuo,Xiao Yue,Yunhe Jiang,Junping Gao
出处
期刊:Plant Physiology
[Oxford University Press]
日期:2023-07-04
卷期号:193 (2): 1605-1620
被引量:1
标识
DOI:10.1093/plphys/kiad365
摘要
Abstract Flower senescence is genetically regulated and developmentally controlled. The phytohormone ethylene induces flower senescence in rose (Rosa hybrida), but the underlying signaling network is not well understood. Given that calcium regulates senescence in animals and plants, we explored the role of calcium in petal senescence. Here, we report that the expression of calcineurin B-like protein 4 (RhCBL4), which encodes a calcium receptor, is induced by senescence and ethylene signaling in rose petals. RhCBL4 interacts with CBL-interacting protein kinase 3 (RhCIPK3), and both positively regulate petal senescence. Furthermore, we determined that RhCIPK3 interacts with the jasmonic acid response repressor jasmonate ZIM-domain 5 (RhJAZ5). RhCIPK3 phosphorylates RhJAZ5 and promotes its degradation in the presence of ethylene. Our results reveal that the RhCBL4-RhCIPK3-RhJAZ5 module mediates ethylene-regulated petal senescence. These findings provide insights into flower senescence, which may facilitate innovations in postharvest technology for extending rose flower longevity.
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