Autophagy in plants: Physiological roles and post-translational regulation.
2020
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 non-plant systems, the modulation of core proteins in the plant autophagy machinery by post-translational 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 post-translational regulation of autophagy in plants. This article is protected by copyright. All rights reserved.
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