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[交流] [优秀文章推荐]中科院揭示非26S蛋白酶体泛素化介导的内膜运输途径调控ABA信号

[优秀文章推荐]中科院揭示非26S蛋白酶体泛素化介导的内膜运输途径调控ABA信号



        非26S蛋白酶体泛素化介导的内膜运输途径在真核生物的生命过程中起重要的调控作用。该领域在动物和酵母中已有较深入地研究,但在植物中还知之甚少。结合该实验室本身的工作和领域中的最新重要研究进展,作者对非26S蛋白酶体泛素化介导的内膜运输途径调控ABA信号进行了深入分析,并提出了这一研究领域仍需解决的问题及对该领域未来研究的展望。

        ABA是一种非常重要的植物激素,它参与调控植物种子成熟、种子萌发、开花及植物对各种生物和非生物胁迫的响应等许多方面。近些年来随着研究的深入,研究者发现ABA信号不仅在转录水平而且在翻译水平上受到非常精细的调控。目前关于26S蛋白酶体如何影响ABA信号已研究的非常清楚。该综述进一步总结和探讨了非26S蛋白酶体途径包括内吞运输途径和自噬途径如何调控ABA信号途径关键组分发挥功能。

        本文的讨论的重点有:(1)内吞运输途径在ABA信号的识别、转导和发挥功能等方面发挥重要作用;(2)自噬途径参与降解ABA信号途径中的膜蛋白和可溶性蛋白组分;(3)E3泛素连接酶如何参与调控ABA信号的内吞运输途径和自噬途径。

        The phytohormone abscisic acid (ABA) is a vital endogenous messenger that regulates diverse physiological processes in plants. The regulation of ABA signaling has been well studied at both the transcriptional and translational levels. Post-translational modification of key regulators in ABA signaling by the 26S ubiquitin proteasome pathway is well known. Recently, increasing evidence demonstrates that atypical turnover of key regulators by the endocytic trafficking pathway and autophagy also play vital roles in ABA perception, signaling, and action. We summarize and synthesize here recent findings in the field of ABA signaling.
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