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Vacuolar transporters and their essential role in plant metabolism


Martinoia, E; Maeshima, M; Neuhaus, H E (2006). Vacuolar transporters and their essential role in plant metabolism. Journal of Experimental Botany, 58(1):83-102.

Abstract

Following the unequivocal demonstration that plants contain at least two types of vacuoles, scientists studying this organelle have realized that the plant ‘vacuome' is far more complex than they expected. Some fully developed cells contain at least two large vacuoles, with different functions. Remarkably, even a single vacuole may be subdivided and fulfil several functions, which are supported in part by the vacuolar membrane transport systems. Recent studies, including proteomic analyses for several plant species, have revealed the tonoplast transporters and their involvement in the nitrogen storage, salinity tolerance, heavy metal homeostasis, calcium signalling, guard cell movements, and the cellular pH homeostasis. It is clear that vacuolar transporters are an integrated part of a complex cellular network that enables a plant to react properly to changing environmental conditions, to save nutrients and energy in times of plenty, and to maintain optimal metabolic conditions in the cytosol. An overview is given of the main features of the transporters present in the tonoplast of plant cells in terms of their function, regulation, and relationships with the microheterogeneity of the vacuome

Abstract

Following the unequivocal demonstration that plants contain at least two types of vacuoles, scientists studying this organelle have realized that the plant ‘vacuome' is far more complex than they expected. Some fully developed cells contain at least two large vacuoles, with different functions. Remarkably, even a single vacuole may be subdivided and fulfil several functions, which are supported in part by the vacuolar membrane transport systems. Recent studies, including proteomic analyses for several plant species, have revealed the tonoplast transporters and their involvement in the nitrogen storage, salinity tolerance, heavy metal homeostasis, calcium signalling, guard cell movements, and the cellular pH homeostasis. It is clear that vacuolar transporters are an integrated part of a complex cellular network that enables a plant to react properly to changing environmental conditions, to save nutrients and energy in times of plenty, and to maintain optimal metabolic conditions in the cytosol. An overview is given of the main features of the transporters present in the tonoplast of plant cells in terms of their function, regulation, and relationships with the microheterogeneity of the vacuome

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Item Type:Journal Article, refereed, original work
Communities & Collections:National licences > 142-005
Dewey Decimal Classification:Unspecified
Language:English
Date:27 June 2006
Deposited On:16 Oct 2018 16:48
Last Modified:29 Sep 2019 05:52
Publisher:Oxford University Press
ISSN:0022-0957
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1093/jxb/erl183
Related URLs:https://www.swissbib.ch/Search/Results?lookfor=nationallicenceoxford101093jxberl183 (Library Catalogue)
PubMed ID:17110589

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