Plant Autophagy: An Intricate Process Controlled by Various Signaling Pathways.
Plant Autophagy: An Intricate Process Controlled by Various Signaling Pathways.
复制标题
植物自噬：由各种信号通路控制的复杂过程
DOI：
10.3389/fpls.2021.754982
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发表时间：
2021
影响因子：
5.6
通讯作者：
Ma C
中科院分区：
文献类型：
--
作者：
Wang P;Wang T;Han J;Li M;Zhao Y;Su T;Ma C
自噬是一种广泛存在于植物细胞中的降解细胞物质的过程，是植物生长和各种环境胁迫反应的重要调节因子。植物细胞中自噬的启动和动力学是根据植物的发育阶段和环境的变化而精确控制的，其被转导到细胞内信号传导途径中。这些信号通路通常通过介导TOR（雷帕霉素靶点）激酶活性来调节自噬，TOR是自噬启动的重要调节因子;然而，有些也通过TOR非依赖性通路发挥作用。在营养饥饿下，TOR活性通过葡萄糖或ROS（活性氧）信号传导被抑制，从而促进自噬的启动。在胁迫下，自噬可以通过连接胁迫、ROS和植物激素的调节网络进行调节，进而调节ROS水平和激素信号。本文就不同的外部信号调控自噬机制的最新研究进展作一综述。
Autophagy is a ubiquitous process used widely across plant cells to degrade cellular material and is an important regulator of plant growth and various environmental stress responses in plants. The initiation and dynamics of autophagy in plant cells are precisely controlled according to the developmental stage of the plant and changes in the environment, which are transduced into intracellular signaling pathways. These signaling pathways often regulate autophagy by mediating TOR (Target of Rapamycin) kinase activity, an important regulator of autophagy initiation; however, some also act via TOR-independent pathways. Under nutrient starvation, TOR activity is suppressed through glucose or ROS (reactive oxygen species) signaling, thereby promoting the initiation of autophagy. Under stresses, autophagy can be regulated by the regulatory networks connecting stresses, ROS and plant hormones, and in turn, autophagy regulates ROS levels and hormone signaling. This review focuses on the latest research progress in the mechanism of different external signals regulating autophagy.
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