| Freezing tolerance by vesicle-mediated fructan transport. | |
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MedLine Citation:
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PMID: 18619894 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Fructans are fructose-based polymers associated with freezing tolerance. They might act directly via membrane stabilization or indirectly by stimulating alternative cryoprotectants. Fructans and fructan biosynthetic enzymes, in general, are believed to be present in the vacuole. This paper draws particular attention to the surprising presence of fructans and fructan exohydrolase activity in the apoplast of cold-stressed plants. This observation raises questions concerning the origin of apoplastic fructans and suggests that fructans are transported to the apoplast by post-synthesis mechanisms, perhaps induced by cold. We propose a conceptual vesicle-mediated transport model for the movement of vacuolar fructans to the apoplast, where they could assist in stabilizing the plasma membrane. |
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Authors:
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Ravi Valluru; Willem Lammens; Wilhelm Claupein; Wim Van den Ende |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-07-09 |
Journal Detail:
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Title: Trends in plant science Volume: 13 ISSN: 1360-1385 ISO Abbreviation: Trends Plant Sci. Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-08-04 Completed Date: 2008-12-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9890299 Medline TA: Trends Plant Sci Country: England |
Other Details:
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Languages: eng Pagination: 409-14 Citation Subset: IM |
Affiliation:
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Institute for Crop Production and Grassland Research, University of Hohenheim, D-70599 Stuttgart, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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physiology* Biological Transport / physiology Freezing* Fructans / metabolism* Glycoside Hydrolases / metabolism Models, Biological Plants / enzymology, metabolism Vacuoles / metabolism |
| Chemical | |
Reg. No./Substance:
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0/Fructans; EC 3.2.1.-/Glycoside Hydrolases; EC 3.2.1.65/levanase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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