ADP-glucose pyrophosphorylase genes, associated with kernel weight, underwent selection during wheat domestication and breeding
文献类型: 外文期刊
第一作者: Hou, Jian
作者: Hou, Jian;Li, Tian;Wang, Yamei;Hao, Chenyang;Liu, Hongxia;Zhang, Xueyong
作者机构:
关键词: Triticum aestivum;ADP-glucose pyrophosphorylase;haplotype;association analysis;yield;selection
期刊名称:PLANT BIOTECHNOLOGY JOURNAL ( 影响因子:9.803; 五年影响因子:9.555 )
ISSN: 1467-7644
年卷期: 2017 年 15 卷 12 期
页码:
收录情况: SCI
摘要: ADP-glucose pyrophosphorylase, comprising two small subunits and two large subunits, is considered a key enzyme in the endosperm starch synthesis pathway in wheat (Triticum aestivum L.). Two genes, TaAGP-S1-7A and TaAGP-L-1B, were investigated in this study. Haplotypes of these genes were associated with thousand kernel weight (TKW) in different populations. Mean TKWs of favoured haplotypes were significantly higher than those of nonfavoured ones. Two molecular markers developed to distinguish these haplotypes could be used in molecular breeding. Frequencies of favoured haplotypes were dramatically increased in cultivars released in China after the 1940s. These favoured haplotypes were also positively selected in six major wheat production regions globally. Selection of AGP-S1 and AGP-L-1B in wheat mainly occurred during and after hexaploidization. Strong additive effects of the favoured haplotypes of with other genes for starch synthesis were also detected in different populations.
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