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Starch degradation
Citation
Smith, AM and Zeeman, SC and Smith, SM, Starch degradation, Annual Review of Plant Biology, 56 pp. 73-98. ISSN 1543-5008 (2005) [Refereed Article]
Copyright Statement
Copyright 2005 Annual Reviews
DOI: doi:10.1146/annurev.arplant.56.032604.144257
Abstract
Recent research reveals that starch degradation in Arabidopsis leaves at night is significantly different from the "textbook" version of this process. Although parts of the pathway are now understood, other parts remain to be discovered. Glucans derived from starch granules are hydrolyzed via β-amylase to maltose, which is exported from the chloroplast. In the cytosol maltose is the substrate for a transglucosylation reaction, producing glucose and a glucosylated acceptor molecule. The enzyme that attacks the starch granule to release glucans is not known, nor is the nature of the cytosolic acceptor molecule. An Arabidopsis-type pathway may operate in leaves of other species, and in nonphotosynthetic organs that accumulate starch transiently. However, in starch-storing organs such as cereal endosperms and legume seeds, the process differs from that in Arabidopsis and may more closely resemble the textbook pathway. We discuss the differences in relation to the biology of each system.
Item Details
Item Type: | Refereed Article |
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Keywords: | amylase, Arabidopsis, cereal endosperm, chloroplast, maltose |
Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Plant physiology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the biological sciences |
UTAS Author: | Smith, SM (Professor Steven Smith) |
ID Code: | 101520 |
Year Published: | 2005 |
Web of Science® Times Cited: | 388 |
Deposited By: | Plant Science |
Deposited On: | 2015-06-25 |
Last Modified: | 2015-09-25 |
Downloads: | 0 |
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