乙烯信号转导及其在植物逆境响应中的作用

摘要

The gaseous phytohormone ethylene affects many aspects of plant growth,development,and stress responses. In the model plant Arabidopsis thaliana,ethylene binding to receptors triggers a kinase cascade that is propagated through a number of components to the nuclear transcription factors involved in the ethylene responsive gene expression and plant responses. This article reviews the update research on regulation of the ethylene receptors,the ethylene signal transduction,and the key regulators. Meanwhile,functional roles of the ethylene signaling and regulators in plant stress responses are also discussed.%乙烯是一种重要的气态植物激素，在植物生长发育及响应生物或非生物胁迫过程中起着重要作用。在模式植物拟南芥中，乙烯首先被内质网膜上乙烯受体所感知，通过一系列下游信号组分进行转导，最终将信号传递到细胞核内转录因子，诱导相关目的基因的表达，从而显示乙烯反应。综述了近几年有关乙烯受体、乙烯信号转导组分及其调控因子的最新研究进展，同时对乙烯信号转导在植物逆境响应中的作用进行了探讨。