Novel duplication pattern of the mitochondrial control region in Cantor's Giant softshell turtle Pelochelys cantorii
文献类型： 外文期刊
作者： Zhang, Xin-Cheng 1 ; Li, Wei 2 ; Zhao, Jian 2 ; Chen, Hai-Gang 1 ; Zhu, Xin-Ping 1 ;
作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Jiangsu, Peoples R China
2.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resource Applicat, Minist Agr, Guangzhou 510380, Guangdong, Peoples R China
关键词： Novel duplication pattern; Mitochondria; Control region; Pelochelys cantorii
期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）
ISSN： 0378-1119
年卷期： 2016 年 593 卷 1 期
页码：
收录情况： SCI
摘要： Cantor's Giant Softshell Turtle, Pelochelys cantorii has become one of the most critically endangered species in the world. When comparative analyses of the P. cantorii complete mitochondrial genome sequences were conducted, we discovered a duplication of a segment of the control region in the mitochondrial genome of P. cantorii. The duplication is characterized by two copies of conserved sequence box 2 (CSB2) and CSB3 in a single control region. In contrast to previous reports of duplications involving the control regions of other animals, this particular pattern of duplications appears to be unique to P. cantorii. Copies of the CSB2 and CSB3 show many of the con :served sequence features typically found in mitochondrial control regions, and rare differences were found between the paralogous copies. Using the primer design principle of simple sequence repeats (SSR) and the reference sequence of the duplicated CSBs, specific primers were designed to amplify the duplicated CSBs. These primers were validated among different individuals and populations of P. cantorii. This unique duplication structure suggests the two copies of the CSB2 and CSB3 may have arisen through occasional tandem duplication and subsequent concerted evolution. (C) 2016 Elsevier B.V. All rights reserved.
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