细胞程序性死亡的启动和执行以及植物中活性氧的调节。
Initiation and Execution of Programmed Cell Death and Regulation of Reactive Oxygen Species in Plants.
机构信息
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China.
Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China.
出版信息
Int J Mol Sci. 2021 Nov 30;22(23):12942. doi: 10.3390/ijms222312942.
Programmed cell death (PCD) plays crucial roles in plant development and defence response. Reactive oxygen species (ROS) are produced during normal plant growth, and high ROS concentrations can change the antioxidant status of cells, leading to spontaneous cell death. In addition, ROS function as signalling molecules to improve plant stress tolerance, and they induce PCD under different conditions. This review describes the mechanisms underlying plant PCD, the key functions of mitochondria and chloroplasts in PCD, and the relationship between mitochondria and chloroplasts during PCD. Additionally, the review discusses the factors that regulate PCD. Most importantly, in this review, we summarise the sites of production of ROS and discuss the roles of ROS that not only trigger multiple signalling pathways leading to PCD but also participate in the execution of PCD, highlighting the importance of ROS in PCD.
细胞程序性死亡（PCD）在植物发育和防御反应中起着至关重要的作用。活性氧（ROS）在植物正常生长过程中产生，高浓度的 ROS 会改变细胞的抗氧化状态，导致细胞自发死亡。此外，ROS 作为信号分子发挥作用，以提高植物的抗胁迫能力，并在不同条件下诱导 PCD。本综述描述了植物 PCD 的机制、线粒体和叶绿体在 PCD 中的关键功能，以及 PCD 过程中线粒体和叶绿体之间的关系。此外，还讨论了调节 PCD 的因素。最重要的是，在本综述中，我们总结了 ROS 的产生部位，并讨论了 ROS 的作用，ROS 不仅触发导致 PCD 的多个信号通路，而且还参与 PCD 的执行，突出了 ROS 在 PCD 中的重要性。
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