Gene duplication and an accelerated evolutionary rate in 11S globulin genes are associated with higher protein synthesis in dicots as compared to monocots
文献类型： 外文期刊
作者： Li, Chun 1 ; Li, Meng 1 ; Dunwell, Jim M. 3 ; Zhang, Yuan-Ming 1 ;
作者机构： 1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Coll Agr, Nanjing 210095, Jiangsu, Peoples R China
2.Henan Acad Agr Sci, Henan Sesame Res Ctr, Zhengzhou 450002, Peoples R China
3.Univ Reading, Sch Biol Sci, Reading RG6 6AS, Berks, England
关键词： 11S globulin;dicot;evolutionary rate;gene duplication;legumins;monocot;positive selection
期刊名称：BMC EVOLUTIONARY BIOLOGY （ 影响因子：3.26； 五年影响因子：3.732 ）
ISSN： 1471-2148
年卷期： 2012 年 12 卷
页码：
收录情况： SCI
摘要： Background: Seed storage proteins are a major source of dietary protein, and the content of such proteins determines both the quantity and quality of crop yield. Significantly, examination of the protein content in the seeds of crop plants shows a distinct difference between monocots and dicots. Thus, it is expected that there are different evolutionary patterns in the genes underlying protein synthesis in the seeds of these two groups of plants. Results: Gene duplication, evolutionary rate and positive selection of a major gene family of seed storage proteins (the 11S globulin genes), were compared in dicots and monocots. The results, obtained from five species in each group, show more gene duplications, a higher evolutionary rate and positive selections of this gene family in dicots, which are rich in 11S globulins, but not in the monocots. Conclusion: Our findings provide evidence to support the suggestion that gene duplication and an accelerated evolutionary rate may be associated with higher protein synthesis in dicots as compared to monocots.
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