天然 GmACO1 等位基因变异赋予大豆耐旱性并影响其结核形成

IF 4.6 4区 农林科学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Zhifang Zhang, Junkui Ma, Xia Yang, Shan Liang, Yucheng Liu, Yaqin Yuan, Qianjin Liang, Yanting Shen, Guoan Zhou, Min Zhang, Zhixi Tian, Shulin Liu
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引用次数: 0

摘要

大豆 [Glycine max (L.) Merr.] 是最重要的作物之一,但也是对干旱敏感的作物。鉴定控制耐旱性的基因对大豆育种非常重要。在此,通过全基因组关联研究,我们发现了一个重要的关联位点,该位点位于第 8 号染色体上,能在一个天然大豆群体中产生耐旱性变异。等位基因分析和遗传验证表明,编码 1-aminocyclopropane-1-carboxylate oxidase 的 GmACO1 是该关联位点的致病基因,对大豆的抗旱性具有正向调控作用。同时,我们发现根瘤菌感染后 GmACO1 的表达量减少,并且 GmACO1 对大豆结瘤的形成有负向调控作用。总之,我们的研究结果为大豆栽培品种的未来育种提供了启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Natural GmACO1 allelic variations confer drought tolerance and influence nodule formation in soybean

Soybean [Glycine max (L.) Merr.] is one of the most important, but a drought-sensitive, crops. Identifying the genes controlling drought tolerance is important in soybean breeding. Here, through a genome-wide association study, we identified one significant association locus, located on chromosome 8, which conferred drought tolerance variations in a natural soybean population. Allelic analysis and genetic validation demonstrated that GmACO1, encoding for a 1-aminocyclopropane-1-carboxylate oxidase, was the causal gene in this association locus, and positively regulated drought tolerance in soybean. Meanwhile, we determined that GmACO1 expression was reduced after rhizobial infection, and that GmACO1 negatively regulated soybean nodule formation. Overall, our findings provide insights into soybean cultivars for future breeding.

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CiteScore
7.70
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