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Critical roles of soluble starch synthase SSIIIa and granule-bound starch synthase Waxy in synthesizing resistant starch in rice
Citation
Zhou, H and Wang, L and Liu, G and Meng, X and Jing, Y and Shu, X and Kong, X and Sun, J and Yu, H and Smith, SM and Wu, D and Li, J, Critical roles of soluble starch synthase SSIIIa and granule-bound starch synthase Waxy in synthesizing resistant starch in rice, Proceedings of the National Academy of Sciences of The United States of America, 113, (45) pp. 12844-12849. ISSN 0027-8424 (2016) [Refereed Article]
Copyright Statement
Copyright 2016 PNAS
DOI: doi:10.1073/pnas.1615104113
Abstract
Changes in human lifestyle and food consumption have resulted in a large increase in the incidence of type-2 diabetes, obesity, and colon disease, especially in Asia. These conditions are a growing threat to human health, but consumption of foods high in resistant starch (RS) can potentially reduce their incidence. Strategies to increase RS in rice are limited by a lack of knowledge of its molecular basis. Through map-based cloning of a RS locus in indica rice, we have identified a defective soluble starch synthase gene (SSIIIa) responsible for RS production and further showed that RS production is dependent on the high expression of the Waxya (Wxa) allele, which is prevalent in indica varieties. The resulting RS has modified granule structure; high amylose, lipid, and amylose僕ipid complex; and altered physicochemical properties. This discovery provides an opportunity to increase RS content of cooked rice, especially in the indica varieties, which predominates in southern Asia.
Item Details
Item Type: | Refereed Article |
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Keywords: | diabetes, resistant starch biosynthesis, soluble starch synthase, granule-bound starch synthase, amylose僕ipid complex |
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: | 113103 |
Year Published: | 2016 |
Web of Science® Times Cited: | 117 |
Deposited By: | Plant Science |
Deposited On: | 2016-12-12 |
Last Modified: | 2022-08-19 |
Downloads: | 0 |
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