Targeted Control of Chloroplast Quality to Improve Plant Acclimation: From Protein Import to Degradation

Targeted Control of Chloroplast Quality to Improve Plant Acclimation: From Protein Import to Degradation
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有针对性地控制叶绿体质量以改善植物驯化:从蛋白质导入到降解

DOI:
10.3389/fpls.2019.00958
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发表时间:
2019-07
影响因子:
5.6
通讯作者:
Li Tianlai
Li Tianlai
中科院分区:
生物学2区
文献类型:
--
作者:
Yang Xiaolong;Li Yangyang;Qi Mingfang;Liu Yufeng;Li Tianlai

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叶绿体是一种重要的产生能量的细胞器,充当植物细胞的环境传感器。整个受损叶绿体及其特定成分的正常周转是胁迫条件下有效光合作用和其他代谢反应所必需的。核编码蛋白必须通过不同的膜转运复合物输入叶绿体,有序的蛋白输入在植物适应性调节中发挥着重要作用。在不利的环境条件下,受损的叶绿体或其特定成分需要被有效降解,以确保正常的细胞功能。在这篇综述中,我们讨论了叶绿体中蛋白质输入和降解的分子机制。具体而言,讨论了从蛋白质输入到降解的叶绿体质量控制以及相关的调控途径,以更好地了解植物如何通过微调叶绿体稳态来适应环境胁迫,这将有利于提高作物产量的育种方法。
The chloroplast is an important energy-producing organelle acting as an environmental sensor for the plant cell. The normal turnover of the entire damaged chloroplast and its specific components is required for efficient photosynthesis and other metabolic reactions under stress conditions. Nuclear-encoded proteins must be imported into the chloroplast through different membrane transport complexes, and the orderly protein import plays an important role in plant adaptive regulation. Under adverse environmental conditions, the damaged chloroplast or its specific components need to be degraded efficiently to ensure normal cell function. In this review, we discuss the molecular mechanism of protein import and degradation in the chloroplast. Specifically, quality control of chloroplast from protein import to degradation and associated regulatory pathways are discussed to better understand how plants adapt to environmental stress by fine-tuning chloroplast homeostasis, which will benefit breeding approaches to improve crop yield.
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