A Novel 10-Base Pair Deletion in the First Exon of GmHY2a Promotes Hypocotyl Elongation, Induces Early Maturation, and Impairs Photosynthetic Performance in Soybean
文献类型： 外文期刊
作者： Zhu, Xiaobin 1 ; Wang, Haiyan 1 ; Li, Yuzhuo 1 ; Rao, Demin 3 ; Wang, Feifei 1 ; Gao, Yi 1 ; Zhong, Weiyu 1 ; Zhao, Yujing 1 ; Wu, Shihao 4 ; Chen, Xin 4 ; Qiu, Hongmei 3 ; Zhang, Wei 3 ; Xia, Zhengjun 1 ;
作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Soybean Mol Design Breeding, State Key Lab Black Soils Conservat & Utilizat, Harbin 150081, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Jilin Acad Agr Sci, Soybean Res Inst, Changchun 132102, Peoples R China
4.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing 210014, Peoples R China
关键词： soybean; Gmeny; phytochromobilin; hypocotyl elongation; photosynthesis; GA signaling; maturity
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.6 ）
ISSN： 1661-6596
年卷期： 2024 年 25 卷 12 期
页码：
收录情况： SCI
摘要： Plants photoreceptors perceive changes in light quality and intensity and thereby regulate plant vegetative growth and reproductive development. By screening a gamma irradiation-induced mutant library of the soybean (Glycine max) cultivar "Dongsheng 7", we identified Gmeny, a mutant with elongated nodes, yellowed leaves, decreased chlorophyll contents, altered photosynthetic performance, and early maturation. An analysis of bulked DNA and RNA data sampled from a population segregating for Gmeny, using the BVF-IGV pipeline established in our laboratory, identified a 10 bp deletion in the first exon of the candidate gene Glyma.02G304700. The causative mutation was verified by a variation analysis of over 500 genes in the candidate gene region and an association analysis, performed using two populations segregating for Gmeny. Glyma.02G304700 (GmHY2a) is a homolog of AtHY2a in Arabidopsis thaliana, which encodes a P Phi B synthase involved in the biosynthesis of phytochrome. A transcriptome analysis of Gmeny using the Kyoto Encyclopedia of Genes and Genomes (KEGG) revealed changes in multiple functional pathways, including photosynthesis, gibberellic acid (GA) signaling, and flowering time, which may explain the observed mutant phenotypes. Further studies on the function of GmHY2a and its homologs will help us to understand its profound regulatory effects on photosynthesis, photomorphogenesis, and flowering time.
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