Regulation of Chlorophagy during Photoinhibition and Senescence: Lessons from Mitophagy
Regulation of Chlorophagy during Photoinhibition and Senescence: Lessons from Mitophagy
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DOI：
10.1093/pcp/pcy096
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发表时间：
2018-06
影响因子：
4.9
通讯作者：
Sakuya Nakamura;M. Izumi
中科院分区：
文献类型：
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作者：
Sakuya Nakamura;M. Izumi
光能是光合能量生产和植物生长所必需的。绿色组织中的叶绿体通过电子传递链将来自阳光的能量转化为化学能。当光能水平超过光合机构的能力时，叶绿体经历称为光抑制的过程。由于光抑制导致活性氧（ROS）的过度积累和细胞死亡的蔓延，植物已经发展了多种系统来保护叶绿体免受强光的伤害。最近的研究表明，自噬，一个系统，在真核生物的细胞内降解细胞质成分的功能，参与清除受损的叶绿体。以前的研究结果也表明，自噬在叶片衰老过程中的叶绿体周转的重要作用。在这篇综述中，我们描述了整个叶绿体的营业额，这是通过一种自噬称为食绿。我们讨论了一个可能的调控机制，诱导的光抑制，叶片衰老和线粒体自噬的线粒体在酵母和哺乳动物的自噬营业额的基础上，目前的知识。
Light energy is essential for photosynthetic energy production and plant growth. Chloroplasts in green tissues convert energy from sunlight into chemical energy via the electron transport chain. When the level of light energy exceeds the capacity of the photosynthetic apparatus, chloroplasts undergo a process known as photoinhibition. Since photoinhibition leads to the overaccumulation of reactive oxygen species (ROS) and the spreading of cell death, plants have developed multiple systems to protect chloroplasts from strong light. Recent studies have shown that autophagy, a system that functions in eukaryotes for the intracellular degradation of cytoplasmic components, participates in the removal of damaged chloroplasts. Previous findings also demonstrated an important role for autophagy in chloroplast turnover during leaf senescence. In this review, we describe the turnover of whole chloroplasts, which occurs via a type of autophagy termed chlorophagy. We discuss a possible regulatory mechanism for the induction of chlorophagy based on current knowledge of photoinhibition, leaf senescence and mitophagy-the autophagic turnover of mitochondria in yeast and mammals.