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The Roles of Mitochondrion in Intergenomic Gene Transfer in Plants: A Source and a Pool

文献类型： 外文期刊

作者： Zhao, Nan 1 ; Wang, Yumei 2 ; Hua, Jinping 1 ;

作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, Lab Cotton Genet Genom & Breeding, Key Lab Crop Heterosis & Utilizat,Minist Educ, Beijing 100193, Peoples R China

2.Hubei Acad Agr Sci, Inst Cash Crops, Wuhan 430064, Hubei, Peoples R China

关键词： mitochondrion; intergenomic gene transfer; nucleus; chloroplast; genome evolution

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2018 年 19 卷 2 期

页码：

收录情况： SCI

摘要： Intergenomic gene transfer (IGT) is continuous in the evolutionary history of plants. In this field, most studies concentrate on a few related species. Here, we look at IGT from a broader evolutionary perspective, using 24 plants. We discover many IGT events by assessing the data from nuclear, mitochondrial and chloroplast genomes. Thus, we summarize the two roles of the mitochondrion: a source and a pool. That is, the mitochondrion gives massive sequences and integrates nuclear transposons and chloroplast tRNA genes. Though the directions are opposite, lots of likenesses emerge. First, mitochondrial gene transfer is pervasive in all 24 plants. Second, gene transfer is a single event of certain shared ancestors during evolutionary divergence. Third, sequence features of homologies vary for different purposes in the donor and recipient genomes. Finally, small repeats (or micro-homologies) contribute to gene transfer by mediating recombination in the recipient genome.

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