A glutathione S-transferase IbGSTL2 interacts with IbcPGM to increase starch content and improve starch quality in sweetpotato  

作　　者：Yue Fan Tianyu Chen Luyao Xue Huan Zhang Shaopei Gao Ning Zhao Shaozhen He Hong Zhai Qingchang Liu 

机构地区：[1]Key Laboratory of Sweetpotato Biology and Biotechnology,Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization,Ministry of Education,College of Agronomy&Biotechnology,China Agricultural University,Beijing 100193,China

出　　处：《The Crop Journal》2024年第6期1666-1676,共11页作物学报（英文版）

基　　金：supported by the National Key Research and Development Program of China (2023YFD1200701/2023YFD1200700);the Earmarked Fund for CARS-10-Sweetpotato.

摘　　要：A glutathione S-transferase(GST)gene IbGSTL2 was cloned and characterized from sweetpotato.It harbored a variation associated with starch content in storage roots.Overexpression of IbGSTL2 increased starch content and amylopectin proportion,decreased gelatinization temperature,and improved degree of crystallinity in sweetpotato storage roots,while its RNA interference resulted in the opposite trends.IbGSTL2 physically interacted with IbcPGM,an enzyme of sucrose metabolism,and improve starch content and quality by regulating genes involved in starch biosynthesis.

关 键 词：IbcPGM IbGSTL2 Starch content Starch quality SWEETPOTATO 

分 类 号：S531[农业科学—作物学]