Phylogeny and molecular evolution of the DMC1 gene within the StH genome species in Triticeae (Poaceae)
Phylogeny and molecular evolution of the DMC1 gene within the StH genome species in Triticeae (Poaceae)
复制标题
小麦科 (Poaceae) StH 基因组物种内 DMC1 基因的系统发育和分子进化
DOI：
10.1007/s13258-011-0169-z
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发表时间：
2012-04
期刊：
影响因子：
--
通讯作者：
Ding, Chun-Bang
中科院分区：
文献类型：
--
作者：
Wang, Xiao-Li;Zhou, Yong-Hong;Fan, Xing;Zeng, Jian;Sha, Li-Na;Zhang, Hai-Qin;Kang, Hou-Yang;Yang, Rui-Wu;Zhang, Li;Ding, Chun-Bang
为了研究StH基因组物种中单拷贝核分裂减数分裂cDNA （DMC1）基因的系统发育和分子进化，从几乎所有StH基因组物种中分离出两个DMC1同源序列，并与代表小麦科St和H基因组的7个二倍类群的DMC1同源序列进行分析。序列多样性模式和家谱分析表明：(1)北美StH基因组种间亲缘关系密切；(2)北美和欧亚大陆的StH基因组物种的DMC1基因序列在进化上存在差异；(3) StH基因组多倍体在St基因组同系物中的序列多样性高于H基因组同系物；(4) DMC1序列在多倍体中可能比在二倍体中进化得更快；(5)多倍体种St基因组的高dN值和dN/dS值可能是低选择约束或at偏突变压力所致。我们的研究结果为研究StH基因组物种的重复DMC1基因的进化动力学、多倍体化事件和系统发育提供了一些启示。
To estimate the phylogeny and molecular evolution of a single-copy nuclear disrupted meiotic cDNA (DMC1) gene within the StH genome species, two DMC1 homoeologous sequences were isolated from nearly all the sampled StH genome species and were analyzed with those from seven diploid taxa representing the St and H genomes in Triticeae. Sequence diversity patterns and genealogical analysis suggested that (1) there is a close relationship among North American StH genome species; (2) the DMC1 gene sequences of the StH genome species from North America and Eurasia are evolutionarily distinct; (3) the StH genome polyploids have higher levels of sequence diversity in the St genome homoeolog than the H genome homoeolog; (4) the DMC1 sequence may evolve faster in the polyploid species than in the diploids; (5) high dN and dN/dS values in the St genome within polyploid species could be caused by low selective constraints or AT-biased mutation pressure. Our result provides some insight on evolutionary dynamics of duplicate DMC1 gene, the polyploidization events and phylogeny of the StH genome species.
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影响因子：
5.8
作者：
Posada, D;Crandall, KA
通讯作者：
Crandall, KA
影响因子：
1.6
作者：
S. George;Pearl Behl;Rhoda deGuzman;Maria Lee;Stefan Rusyniak;Y. Hotta;K. Hiratsuka;H. Takase;C. Hasenkampf
通讯作者：
S. George;Pearl Behl;Rhoda deGuzman;Maria Lee;Stefan Rusyniak;Y. Hotta;K. Hiratsuka;H. Takase;C. Hasenkampf
影响因子：
4.1
作者：
L. Sha;Xing Fan;Ruiwu Yang;Houyang Kang;C. Ding;Li Zhang;Youliang Zheng;Yonghong Zhou
通讯作者：
L. Sha;Xing Fan;Ruiwu Yang;Houyang Kang;C. Ding;Li Zhang;Youliang Zheng;Yonghong Zhou
影响因子：
--
作者：
Á. Löve
通讯作者：
Á. Löve
影响因子：
2.6
作者：
Anderson, L. K.;Stack, S. M.
通讯作者：
Stack, S. M.