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Ethylene and salicylic acid synergistically accelerate leaf senescence in Arabidopsis 被引量:6

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摘要 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 ein3 eil1 npr1 triple mutant than ein3 eil1 or npr1 with ethylene or/and SA treatment. NPR1-promoted leaf senescence may depend on functional EIN3/EIL1.
出处 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2021年第5期828-833,共6页 植物学报(英文版)
基金 This work was supported by grants from the Natural Science Foundation of Shanghai(17ZR1420400) the National Natural Science Foundation of China(31970303) the Municipal Science and Technology Commission of Shanghai(18DZ2260500)to Xin Zhou supported in part by the Shanghai Science and Technology Innovation Action Plan Project(16391900300) the Shanghai Pujiang Talent Program(17PJ1433700) the National Natural Science Foundation of China(31872661)to Zhong-Lin Zhang。
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