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首页> 外文期刊>The Americas Journal of Plant Science and Biotechnology >Protein Ubiquitination: An Emerging Theme in Plant Abiotic Stress Tolerance
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Protein Ubiquitination: An Emerging Theme in Plant Abiotic Stress Tolerance

机译：蛋白质泛素化：植物非生物胁迫耐受性的新兴主题。

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摘要

The ubiquitin proteasome system (UPS) effectively and efficiently controls the abundance of regulatory proteins, removes abnormal proteins and regulates the activity of signalling proteins. This allows for control of regulatory networks and adaptationto external stimuli. Plants utilize the UPS to alter their proteome, to modulate cellular activity and thus cope with unfavourable growth conditions. Recent studies demonstrated that the UPS plays a critical role in abiotic stress tolerance. Using the model research plant Arabidopsis thaliana, E3 ubiquitin ligases, the substrate-recruiting component of the ubiquitination pathway, have been identified as regulators of salinity, cold, heat and drought stress tolerance. E3 ubiquitin ligases also play a central role in regulating the signalling pathway initiated by the stress phytohormone abscisic acid. These studies establish a direct link between ubiquitination and plant response to environmental stresses. This work has been extended to other model plants and provides a strategy for enhancing plant stress tolerance utilizing the regulatory enzymes of the UPS. This review focuses on the recent progress in understanding the role of the UPS in abiotic stress tolerance and discusses strategies for improving stress tolerance by targeting E3 ubiquitin ligases.
机译：泛素蛋白酶体系统（UPS）有效地控制了调节蛋白的含量，去除了异常蛋白并调节了信号蛋白的活性。这允许控制调节网络并适应外部刺激。植物利用UPS改变蛋白质组，调节细胞活性，从而应对不利的生长条件。最近的研究表明，UPS在非生物胁迫耐受性中起着至关重要的作用。使用模型研究植物拟南芥，E3泛素连接酶（泛素化途径的底物募集成分）已被确定为盐度，寒冷，高温和干旱胁迫耐受性的调节剂。 E3泛素连接酶在调节应激植物激素脱落酸引发的信号传导途径中也起着核心作用。这些研究在泛素化和植物对环境胁迫的反应之间建立了直接联系。这项工作已扩展到其他模型工厂，并提供了利用UPS的调节酶增强植物胁迫耐受性的策略。这篇综述着重于了解UPS在非生物胁迫耐受性中的作用的最新进展，并讨论了通过靶向E3泛素连接酶来改善胁迫耐受性的策略。

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