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Int. J. Mol. Sci. 2014, 15(5), 7624-7638; doi:10.3390/ijms15057624

Degradation of Organelles or Specific Organelle Components via Selective Autophagy in Plant Cells

Department of Plant Science, the Weizmann Institute of Science, Rehovot 76100, Israel
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Received: 16 March 2014 / Revised: 31 March 2014 / Accepted: 16 April 2014 / Published: 5 May 2014
(This article belongs to the Special Issue Plant Cell Compartmentation and Volume Control)
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Abstract

Macroautophagy (hereafter referred to as autophagy) is a cellular mechanism dedicated to the degradation and recycling of unnecessary cytosolic components by their removal to the lytic compartment of the cell (the vacuole in plants). Autophagy is generally induced by stresses causing energy deprivation and its operation occurs by special vesicles, termed autophagosomes. Autophagy also operates in a selective manner, recycling specific components, such as organelles, protein aggregates or even specific proteins, and selective autophagy is implicated in both cellular housekeeping and response to stresses. In plants, selective autophagy has recently been shown to degrade mitochondria, plastids and peroxisomes, or organelle components such as the endoplasmic-reticulum (ER) membrane and chloroplast-derived proteins such as Rubisco. This ability places selective-autophagy as a major factor in cellular steady-state maintenance, both under stress and favorable environmental conditions. Here we review the recent advances documented in plants for this cellular process and further discuss its impact on plant physiology. View Full-Text
Keywords: Arabidopsis; selective-autophagy; autophagosome; ATG8; reticulophagy; chlorophagy; pexophagy; mitophagy; rubisco-containing bodies; plant organelles; vacuole; degradation Arabidopsis; selective-autophagy; autophagosome; ATG8; reticulophagy; chlorophagy; pexophagy; mitophagy; rubisco-containing bodies; plant organelles; vacuole; degradation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Michaeli, S.; Galili, G. Degradation of Organelles or Specific Organelle Components via Selective Autophagy in Plant Cells. Int. J. Mol. Sci. 2014, 15, 7624-7638.

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