Activities of enzymes involved in starch synthesis in wheat grains differing in starch content

Activities of enzymes involved in starch synthesis in wheat grains differing in starch content This work was carried out to characterize starch accumulation and activities of key enzymes during grain filling in two wheat cultivars differing in starch content. The results showed that the starch accumulation rate (SAR) and activities of sucrose synthase, ADP-glucose pyrophosphorylase, soluble starch synthase, granule-bound starch synthase, and starch branching enzyme in the cultivar with a high starch content were significantly higher than those in the cultivar with a low starch content. The simulation with Richards’ equation showed that it was average starch accumulation rate but not active starch accumulation duration that determined starch accumulation. As compared with the cultivar with a low starch content, plants of the cultivar with a high starch content maintained the higher SAR and greater activities of related enzymes during mid and late grain filling stages. Consequently, the cultivar with a high starch content had advantages over that with a low starch content in terms of the amount of starch accumulation at mid and late grain filling stages. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Activities of enzymes involved in starch synthesis in wheat grains differing in starch content

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443710010103
Publisher site
See Article on Publisher Site

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