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磷脂酰乙醇胺结合蛋白(PEBP,phosphatidyl ethanolamine-binding protein)基因家族在动物、植物和微生物中广泛存在,在控制植物开花和种子休眠中起重要作用。本研究对大豆PEBP基因家族进行了分析,发现了27个大豆PEBP基因的候选序列,其中16个具有完整PEBP结构域的全长序列被认为是大豆Gm PEBP家族基因。Gm PEBP基因分布在9条染色体上,基因结构高度保守。通过系统发生分析,可将大豆Gm PEBP基因家族成员分为FT-like、TFL1-like和MFT-like 3个亚族,并且发现Gm PEBP家族成员数目按照大豆物种特异性的方式进行了扩张。对重复基因的Ks分析表明,绝大多数重复基因主要由5900万年前和1300万年前的大豆基因组复制所致。
The family of phosphatidyl ethanolamine-binding protein (PEBP) genes is widespread in animals, plants and microorganisms and plays an important role in controlling plant flowering and seed dormancy. In this study, the soybean PEBP gene family was analyzed and the candidate sequences of 27 soybean PEBP genes were found. Among them, 16 full-length sequences with complete PEBP domains were considered as soybean Gm PEBP family genes. Gm PEBP genes are distributed on 9 chromosomes and the gene structure is highly conserved. Through phylogenetic analysis, the members of soybean Gm PEBP gene family can be divided into three subfamilies, FT-like, TFL1-like and MFT-like, and the number of members of Gm PEBP family was found to be expanded in a species-specific manner. Ks analysis of repeated genes showed that most of the repeat genes were mainly caused by duplication of the soybean genome 59 million years ago and 13 million years ago.