Flowering time regulator qFT13-3 involved in soybean adaptation to high latitudes

文献类型： 外文期刊

第一作者： Li, Yan-fei

作者： Li, Yan-fei;Zhang, Liya;Guo, Shiyu;Li, Delin;Liu, Zhangxiong;Li, Ying-hui;Liu, Bin;Qiu, Li-juan;Li, Yan-fei;Guo, Shiyu;Li, Delin;Liu, Zhangxiong;Li, Ying-hui;Liu, Bin;Qiu, Li-juan;Li, Yan-fei;Wang, Jun;Wang, Xing;Xu, Ze-jun;Li, Ying-hui;Liu, Bin;Qiu, Li-juan

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关键词： soybean; genome-wide association study; flowering time; yield-related traits; adaptation

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：13.8； 五年影响因子：13.2 ）

ISSN： 1467-7644

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Soybean is a short-day plant that typically flowers earlier when exposed to short-day conditions. However, the identification of genes associated with earlier flowering time but without a yield penalty is rare. In this study, we conducted genome-wide association studies (GWAS) using two re-sequencing datasets that included 113 wild soybeans (G. soja) and 1192 cultivated soybeans (G. max), respectively, and simultaneously identified a candidate flowering gene, qFT13-3, which encodes a protein homologous to the pseudo-response regulator (PRR) transcription factor. We identified four major haplotypes of qFT13-3 in the natural population, with haplotype H4 (qFT13-3(H4)) being lost during domestication, while qFT13-3(H1) underwent natural and artificial selection, increasing in proportion from 4.5% in G. soja to 43.8% in landrace and to 81.9% in improve cultivars. Notably, most cultivars harbouring qFT13-3(H1) were located in high-latitude regions. Knockout of qFT13-3 accelerated flowering and maturity time under long-day conditions, indicating that qFT13-3 functions as a flowering inhibitor. Our results also showed that qFT13-3 directly downregulates the expression of GmELF3b-2 which is a component of the circadian clock evening complex. Field trials revealed that the qft13-3 mutants shorten the maturity period by 11 days without a concomitant penalty on yield. Collectively, qFT13-3 can be utilized for the breeding of high-yield cultivars with a short maturity time suitable for high latitudes.

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