J Integr Plant Biol. ›› 2021, Vol. 63 ›› Issue (1): 161-179.DOI: 10.1111/jipb.12941

Special Issue: Protein modification

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Autophagy in plants: Physiological roles and post‐translational regulation

Hua Qi, Fan-Nv Xia and Shi Xiao*   

  1. State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat‐sen University, Guangzhou 510275, China

    These authors contributed equally to this study.
    *Correspondence: Shi Xiao (xiaoshi3@mail.sysu.edu.cn)
  • Received:2020-03-10 Accepted:2020-04-22 Online:2020-04-23 Published:2021-01-01

Abstract: In eukaryotes, autophagy helps maintain cellular homeostasis by degrading and recycling cytoplasmic materials via a tightly regulated pathway. Over the past few decades, significant progress has been made towards understanding the physiological functions and molecular regulation of autophagy in plant cells. Increasing evidence indicates that autophagy is essential for plant responses to several developmental and environmental cues, functioning in diverse processes such as senescence, male fertility, root meristem maintenance, responses to nutrient starvation, and biotic and abiotic stress. Recent studies have demonstrated that, similar to nonplant systems, the modulation of core proteins in the plant autophagy machinery by posttranslational modifications such as phosphorylation, ubiquitination, lipidation, S‐sulfhydration, S‐nitrosylation, and acetylation is widely involved in the initiation and progression of autophagy. Here, we provide an overview of the physiological roles and posttranslational regulation of autophagy in plants.

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