Mitochondria play a central role in primary metabolism in plants as well as in heterotrophic eukaryotes. Plants must control the quality and number of mitochondria in response to a changing environment, across cell types and developmental stages. Mitophagy is defined as the degradation of mitochondria by autophagy, an evolutionarily conserved system for the removal and recycling of intracellular components. Recent studies have highlighted the importance of mitophagy in plant stress responses. This review article summarizes our current knowledge of plant mitophagy and discusses the underlying mechanisms. In plants, chloroplasts cooperate with mitochondria for energy production, and autophagy also targets chloroplasts through a process known as chlorophagy. Advances in plant autophagy studies now allow a comparative analysis of the autophagic turnover of mitochondria and chloroplasts, via the selective degradation of their soluble proteins, fragments, or entire organelles.

线粒体在植物以及异养真核生物的初级代谢中起着核心作用。植物必须控制线粒体的质量和数量，以应对不断变化的环境、细胞类型和发育阶段。线粒体自噬被定义为自噬降解线粒体，自噬是一种用于去除和回收细胞内成分的进化保守系统。最近的研究强调了线粒体自噬在植物胁迫反应中的重要性。这篇综述文章总结了我们目前对植物线粒体自噬的了解，并讨论了其潜在机制。在植物中，叶绿体与线粒体合作产生能量，自噬也通过称为叶绿体的过程靶向叶绿体。