During the past decade, molecular genetic studies on the reference plant Arabidopsis have established a largely linear signal transduction pathway for the response to ethylene gas. The biochemical modes of action of many of the signaling components are still unresolved. During the past year, however, progress in several areas has been made on several fronts. The different approaches used have included a functional study of the activity of the receptor His kinase, the determination of the ethylene receptor signaling complex at the endoplasmic reticulum and of the regulation of CONSTITUTIVE TRIPLE RESPONSE1 (CTR1) activity by these receptors, the identification of a unique MITOGEN-ACTIVATED PROTEIN KINASE (MAPK) cascade, the cloning and characterization of numerous ETHYLENE INSENSITIVE3 (EIN3)/EIN3-like (EIL) transcription factors from many plant species, and the integration of the ethylene and jasmonate response pathways via the ETHYLENE RESPONSE FACTOR (ERF) family of transcription factors. The elucidation of the biochemical mechanisms of ethylene signal transduction and the identification of new components in the ethylene response pathway in Arabidopsis are providing a framework for understanding how all plants sense and respond to ethylene.

中文翻译：

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乙烯信号传导途径：新见解。

在过去的十年中，对参考植物拟南芥的分子遗传学研究已经建立了对乙烯气体响应的很大程度上线性的信号转导途径。许多信号转导成分的生化作用模式仍未解决。但是，在过去的一年中，在多个方面都取得了一些进展。所使用的不同方法包括功能性研究His受体激酶的活性，内质网中乙烯受体信号复合物的测定以及这些受体对本构三联反应1（CTR1）活性的调节，独特的丝裂原活化蛋白激酶（MAPK）级联，来自许多植物物种的众多乙烯不敏感3（EIN3）/ EIN3样（EIL）转录因子的克隆和表征，以及乙烯和茉莉酸酯响应途径通过乙烯反应因子（ERF）转录因子家族的整合 对拟南芥中乙烯信号转导的生化机制的阐明以及乙烯反应途径中新成分的鉴定为理解所有植物如何感测和响应乙烯提供了框架。