Ethylene and salicylic acid synergistically accelerate leaf senescence in Arabidopsis
Ethylene and salicylic acid synergistically accelerate leaf senescence in Arabidopsis
复制标题
乙烯和水杨酸协同加速拟南芥叶片衰老
DOI：
10.1111/jipb.13075
复制
发表时间：
2021
影响因子：
11.4
通讯作者：
Zhou Xin
中科院分区：
文献类型：
--
作者：
Wang Chaoqi;Dai Shouyi;Zhang Zhong-Lin;Lao Wenqing;Wang Ruiying;Meng Xianqing;Zhou Xin
植物激素乙烯和水杨酸(SA)具有促进衰老的作用，但它们在这一过程中的相互作用尚不清楚。本文报道了乙烯和SA在促进拟南芥叶片衰老方面的协同效应。乙烯信号的关键转录因子EIN3与SA信号核心调控因子NPR1在衰老叶片中发生物理相互作用。EIN3和NPR1协同促进衰老相关基因ore1和SAG29的表达。ein3eil1npr1三重突变体的衰老表型比ein3eil1或npr1与乙烯或SA处理的延迟更多，NPR1促进的叶片衰老可能依赖于EIN3/EIL1。
The phytohormones ethylene and salicylic acid(SA)have long been known to promote senescence, but their interplay during this process remains elusive.Here we report the synergistic effects of ethylene and SA on promoting leaf senescence in Arabidopsis.EIN3, a key transcription factor of ethylene signaling, physically interacted with the core SA signaling regulator NPR1 in senescing leaves.EIN3 and NPR1 synergistically promoted the expression of the senescence-associated genes ORE1 and SAG29.The senescence phenotype was more delayed for the ein3eil1npr1 triple mutant than ein3eil1 or npr1 with ethylene or/and SA treatment.NPR1-promoted leaf senescence may depend on functional EIN3/EIL1.