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Two soybean homologues of TERMINAL FLOWER 1 control flowering time under long day conditions

文献类型： 外文期刊

作者： Wang, Lingshuang 1 ; Lin, Chun 2 ; Li, Bohui 1 ; Su, Tong 1 ; Li, Shichen 1 ; Li, Haiyang 3 ; He, Fanglei 2 ; Gou, Chuanjie 1 ; Chen, Zheng 1 ; Wang, Yanan 1 ; Qin, Jun 4 ; Liu, Baohui 1 ; Kong, Fanjiang 1 ; Yue, Lin 1 ; Lu, Sijia 1 ; Fang, Chao 1 ;

作者机构： 1.Guangzhou Univ, Sch Life Sci, Innovat Ctr Mol Genet & Evolut, Guangdong Key Lab Plant Adaptat & Mol Design,Guang, Guangzhou 510006, Guangdong, Peoples R China

2.Yunnan Agr Univ, Coll Agr & Biotechnol, Kunming 650201, Yunnan, Peoples R China

3.Nanjing Agr Univ, Natl Ctr Soybean Improvement, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Natl Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Jiangsu, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crop, Key Lab Crop Genet & Breeding Hebei, Shijiazhuang 050035, Hebei, Peoples R China

关键词： Soybean; TFL1c; TFL1d; Flowering time

期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）

ISSN： 2095-5421

年卷期： 2023 年 11 卷 3 期

页码：

收录情况： SCI

摘要： Flowering time is a key agronomic trait that directly affect the adaptation and yield of soybean. After whole genome duplications, about 75% of genes being represented by multiple copies in soybean. There are four TERMINAL FLOWER 1 (TFL1) genes in soybean, and the TFL1b (Dt1) has been characterized as the determinant of stem growth habit. The function of other TFL1 homologs in soybean is still unclear. Here, we generated knockout mutants by CRISPR/Cas9 genome editing technology and found that the tfl1c/tfl1d double mutants flowered significantly earlier than wild-type plants. We investigated that TFL1c and TFL1d could physically interact with the bZIP transcription factor FDc1 and bind to the pro-moter of APETALA1a (AP1a). RNA-seq and qRT-PCR analyses indicated that TFL1c and TFL1d repressed the expressions of the four AP1 homologs and delayed the flowering time in soybean. The two genes play important roles in the regulation of flowering time in soybean and mainly act as the flowering inhibitors under long-day conditions. Our results identify novel components in the flowering-time regulation net-work of soybean and will be invaluable for molecular breeding of improved soybean yield. & COPY; 2022 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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