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Identification of two quantitative genes controlling soybean flowering using bulked-segregant analysis and genetic mapping

文献类型： 外文期刊

作者： Lv, Tianxiao 1 ; Wang, Lingshuang 1 ; Zhang, Chunyu 2 ; Liu, Shu 2 ; Wang, Jinxing 4 ; Lu, Sijia 1 ; Fang, Chao 1 ; Kong, Lingping 1 ; Li, Yunlong 4 ; Li, Yuge 2 ; Hou, Xingliang 2 ; Liu, Baohui 1 ; Kong, Fanjiang 1 ; Li, Xiaoming 2 ;

作者机构： 1.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Guangzhou Higher Educ Mega Ctr, Guangzhou Key Lab Crop Gene Editing,Sch Life Sci,G, Guangzhou, Peoples R China

2.Chinese Acad Sci, Innovat Acad Seed Design, Key Lab South China Agr Plant Mol Anal & Genet Imp, Guangdong Prov Key Lab Appl Bot,South China Bot Ga, Guangzhou, Peoples R China

3.Univ Chinese Acad Sci, Beijing, Peoples R China

4.Heilongjiang Acad Agr Sci, Suihua Branch Inst, Suihua, Heilongjiang, Peoples R China

关键词： long-juvenile; BSA; positional cloning; Tof11; FT

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Photoperiod responsiveness is important to soybean production potential and adaptation to local environments. Varieties from temperate regions generally mature early and exhibit extremely low yield when grown under inductive short-day (SD) conditions. The long-juvenile (LJ) trait is essentially a reduction and has been introduced into soybean cultivars to improve yield in tropical environments. In this study, we used next-generation sequencing (NGS)-based bulked segregant analysis (BSA) to simultaneously map qualitative genes controlling the LJ trait in soybean. We identified two genomic regions on scaffold_32 and chromosome 18 harboring loci LJ32 and LJ18, respectively. Further, we identified LJ32 on the 228.7-kb scaffold_32 as the soybean pseudo-response-regulator gene Tof11 and LJ18 on a 301-kb region of chromosome 18 as a novel PROTEIN FLOWERING LOCUS T-RELATED gene, Glyma.18G298800. Natural variants of both genes contribute to LJ trait regulation in tropical regions. The molecular identification and functional characterization of Tof11 and LJ18 will enhance understanding of the molecular mechanisms underlying the LJ trait and provide useful genetic resources for soybean molecular breeding in tropical regions.

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