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Gene loss in plants: Evidence from genome-wide phylogenetic analysis of thiamine pyrophosphate-dependent enzymes

文献类型： 外文期刊

作者： Tian, Xin-Min 1 ; Wang, Peng 1 ; Hu, Wen-Bin 1 ; Gao, Da-Hai 2 ; Li, Qiong 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Res Inst, Danzhou 571737, Hainan, Peoples R China

2.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Shandong, Peoples R China

关键词： gene loss;genome-wide;phylogenetic analyses;TPP-dependent

期刊名称：JOURNAL OF SYSTEMATICS AND EVOLUTION （ 影响因子：4.098； 五年影响因子：4.735 ）

ISSN： 1674-4918

年卷期： 2015 年 53 卷 3 期

页码：

收录情况： SCI

摘要： Thiamine pyrophosphate (TPP)-dependent enzymes are present in all domains of life, which share a cofactor with TPP. However, a comprehensive analysis of TPP-dependent enzymes from sequenced genomes has not been reported and little is known about the evolutionary dynamics of this gene family in plants. In this study, the evolutionary relationships of the TPP-dependent enzymes were investigated by using a comprehensive genome-wide phylogenetic analysis. A total of 103 plant TPP-dependent enzyme sequences were identified in 16 plant species. Phylogenetic analyses suggest that these plant TPP-dependent genes fell into three major groups, acetolactate synthase, pyruvate dehydrogenase, and 2-hydroxyphytanoyl-CoA lyase. Our results showed fewer TPP-dependent genes in plants than that in other living organisms, with many types of genes lost during evolution possibly because they do not largely influence plant function. Within the plant kingdom, seed plants have more TPP genes compared to non-seed basal plants, which probably imply that seed plants developed more TPP genes to adapt to their environment. The present study provides important information for understanding the evolution and function of the TPP-dependent gene family in plants.

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