| From signal transduction to autophagy of plant cell organelles: lessons from yeast and mammals and plant-specific features. | |
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MedLine Citation:
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PMID: 20734094 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Autophagy is an evolutionarily conserved intracellular process for the vacuolar degradation of cytoplasmic constituents. The central structures of this pathway are newly formed double-membrane vesicles (autophagosomes) that deliver excess or damaged cell components into the vacuole or lysosome for proteolytic degradation and monomer recycling. Cellular remodeling by autophagy allows organisms to survive extensive phases of nutrient starvation and exposure to abiotic and biotic stress. Autophagy was initially studied by electron microscopy in diverse organisms, followed by molecular and genetic analyses first in yeast and subsequently in mammals and plants. Experimental data demonstrate that the basic principles, mechanisms, and components characterized in yeast are conserved in mammals and plants to a large extent. However, distinct autophagy pathways appear to differ between kingdoms. Even though direct information remains scarce particularly for plants, the picture is emerging that the signal transduction cascades triggering autophagy and the mechanisms of organelle turnover evolved further in higher eukaryotes for optimization of nutrient recycling. Here, we summarize new research data on nitrogen starvation-induced signal transduction and organelle autophagy and integrate this knowledge into plant physiology. |
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Authors:
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Sigrun Reumann; Olga Voitsekhovskaja; Cathrine Lillo |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-08-24 |
Journal Detail:
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Title: Protoplasma Volume: 247 ISSN: 1615-6102 ISO Abbreviation: Protoplasma Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9806853 Medline TA: Protoplasma Country: Austria |
Other Details:
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Languages: eng Pagination: 233-56 Citation Subset: IM |
Affiliation:
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Centre for Organelle Research, University of Stavanger, 4021 Stavanger, Norway. sigrun.reumann@uis.no |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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