ACTIVITIES OF KEY ENZYMES INVOLVED IN STARCH ACCUMULATION IN SORGHUM (SORGHUM BICOLOR L. MOENCH) GRAINS WITH DIFFERENT STARCH CONTENTS
文献类型： 外文期刊
第一作者： Zhou, Yufei
作者： Zhou, Yufei;Zhang, Ruidong;Yi, Bing;Wang, Yitao;Xing, Yifan;Jiang, Bing;LI, Bang;Xu, Xiaoxue;Chen, Xiaofei;Zhang, Ruidong;Yi, Bing;Wang, Yitao
作者机构：
关键词： Amylopectin; Amylose; Enzyme activity; Sorghum; Starch synthesis
期刊名称：BANGLADESH JOURNAL OF BOTANY （ 影响因子：0.3； 五年影响因子：0.4 ）
ISSN： 0253-5416
年卷期： 2022 年 51 卷 2 期
页码：
收录情况： SCI
摘要： Starch accumulation and the seven metabolic enzyme activities in sorghum grains with different starch contents were investigated under field conditions in Shenyang Agricultural University. The results indicated that the starch accumulation in Tieza17 (high starch content variety) and Liaoza11 (low starch content variety) grains could be fitted with logistic equation. The activities of sucrose synthase (SS), soluble starch synthase (SSS) and uridine diphosphate glucose pyrophosphorylase (UGPase) in Tieza17 were similar to those in Liaoza11. Adenosine diphosphate glucose pyrophosphorylase (AGPase) and granule-bound starch synthase (GBSS) activities in Tieza17 grains were consistently higher than those in Liaoza11 grains. Starch branching enzyme (SBE) and starch debranching enzyme (DBE) activities increased or decreased significantly between the two varieties at different filling stages. It is suggested that the differences in the activities of AGPase, GBSS, SBE and DBE and their tradeoff played an important role in regulating starch accumulation in sorghum grains.
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