Comparative Cytogenetics of Hamsters of the Genus Allocricetulus Argyropulo 1932 (Cricetidae, Rodentia)
Comparative Cytogenetics of Hamsters of the Genus Allocricetulus Argyropulo 1932 (Cricetidae, Rodentia)
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DOI：
10.1159/000346194
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发表时间：
2013-01-01
影响因子：
1.7
通讯作者：
Graphodatsky, A. S.
中科院分区：
文献类型：
--
作者：
Romanenko, S. A.;Lebedev, V. S.;Graphodatsky, A. S.
应用染色体涂染和G-带分析技术，对银仓鼠属Allocricetulus Argyropulo 1932（仓鼠科，鼠总科，啮齿目）4个分类群的同源染色体片段进行了划分。curtatus（2n = 20），A. eversmannieversmanni、艾氏隐翅虫A. eversmannipseudocurtatus和杂种A. eversmannibeljaevi、黑腹滨藜A. 2n = 26。根据叙利亚仓鼠（Mesocricetus auratus，2n = 44）染色体特异性探针的染色体涂绘，建立了4种核型之间的比较图谱。本文提出了一个异仓鼠属（Allocricetulus，AAK）的祖先核型，它包含12-13个祖先常染色体元件。综合地图表明，在这个啮齿动物属内的同线扩展保护，并显示罗伯逊重排属Allocricetulus的核型进化中的主导作用。在细胞遗传学水平上，我们清楚地证明了物种核型之间的核型差异（A。curtatus vs. eversmanni）和亚种A. e. eversmanni和A. e. beljaevi对A. e. pseudocurtatus，而A. e. eversmanni和A. e. beljaevi在这个分辨率水平上是相同的。版权所有（C）2013 S. Karger AG，巴塞尔
Chromosome painting and G-banding analyses were used to delimit homologous chromosomal segments among 4 taxa of the hamsters genus Allocricetulus Argyropulo 1932 (Cricetidae, Muroidea, Rodentia) - A. curtatus (2n = 20), A. eversmanni eversmanni, A. eversmanni pseudocurtatus, and the hybrid A. eversmanni beljaevi, A. eversmanni pseudocurtatus (all 2n = 26). Comparative maps between the 4 karyotypes were established based on chromosome painting of chromosome-specific probes from the Syrian hamster (Mesocricetus auratus, 2n = 44). A putative ancestral karyotype for the genus Allocricetulus (AAK) was proposed and contains 12-13 ancestral autosomal elements. Integrated maps demonstrate extended conservation of syntenies within this rodent genus and show the predominant role of Robertsonian rearrangements in the karyotype evolution of the genus Allocricetulus. At the cytogenetic level, we clearly demonstrate karyological differences between karyotypes of species (A. curtatus vs. A. eversmanni) and subspecies A. e. eversmanni and A. e. beljaevi versus A. e. pseudocurtatus, but the karyotypes of A. e. eversmanni and A. e. beljaevi are identical at this level of resolution. Copyright (C) 2013 S. Karger AG, Basel