The FLOWERING LOCUS T 5b positively regulates photoperiodic flowering and improves the geographical adaptation of soybean

文献类型： 外文期刊

第一作者： Su, Qiang

作者： Su, Qiang;Chen, Li;Cai, Yupeng;Chen, Yingying;Zhang, Jialing;Hou, Wensheng;Su, Qiang;Chen, Li;Cai, Yupeng;Wang, Liwei;Chen, Yingying;Zhang, Jialing;Liu, Luping;Zhang, Yan;Yuan, Shan;Sun, Shi;Han, Tianfu;Hou, Wensheng;Gao, Yang

作者机构：

关键词： CRISPR/Cas9; GmFT5b; regional adaptability

期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.3； 五年影响因子：8.1 ）

ISSN： 0140-7791

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Plants can sense the photoperiod to flower at the right time. As a sensitive short-day crop, soybean (Glycine max) flowering varies greatly depending on photoperiods, affecting yields. Adaptive changes in soybeans rely on variable genetic loci such as E1 and FLOWERING LOCUS T orthologs. However, the precise coordination and control of these molecular components remain largely unknown. In this study, we demonstrate that GmFT5b functions as a crucial factor for soybean flowering. Overexpressed or mutated GmFT5b resulted in significantly early or later flowering, altering expression profiles for several downstream flowering-related genes under a long-day photoperiod. GmFT5b interacts with the transcription factor GmFDL15, suggesting transcriptional tuning of flowering time regulatory genes via the GmFT5b/GmFDL15 complex. Notably, GmFT5a partially compensated for GmFT5b function, as ft5a ft5b double mutants exhibited an enhanced late-flowering phenotype. Association mapping revealed that GmFT5b was associated with flowering time, maturity, and geographical distribution of soybean accessions, all associated with the E1 locus. Therefore, GmFT5b is a valuable target for enhancing regional adaptability. Natural variants or multiple mutants in this region can be utilized to generate optimized soybean varieties with precise flowering times.

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