Genome evolution trend of common carp (Cyprinus carpio L.) as revealed by the analysis of microsatellite loci in a gynogentic family
文献类型: 外文期刊
作者: Zhang, Yan 1 ; Liang, Liqun 1 ; Jiang, Peng 1 ; Li, Dayu 1 ; Lu, Cuiyun 1 ; Sun, Xiaowen 1 ;
作者机构: 1.Chinese Acad Fisheries Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China
2.Shanghai Fisheries Univ, Coll Aqualife Sci & Technol, Shanghai 200090, Peoples R China
3.Dalian Fisheries Univ, Life Sci & Technol Inst, Dalian 116023, Peoples R China
关键词: common carp;genome duplication;genome diploidization
期刊名称:JOURNAL OF GENETICS AND GENOMICS ( 影响因子:4.275; 五年影响因子:5.223 )
ISSN: 1673-8527
年卷期: 2008 年 35 卷 2 期
页码:
收录情况: SCI
摘要: Genome evolution arises from two main ways of duplication and reduction. Fish specific genome duplication (FSGD) may have occurred before the radiation of the teleosts. Common carp (Cyprinus carpio L.) has been considered to be a tetraploid species, because of its chromosome numbers (2n=100) and its high DNA content. Using 69 microsatellite primer pairs, the variations were studied to better understand the genome evolution (genome duplication and diploidization) of common carp from a gynogenetic family. About 48% of primer pairs were estimated to amplify duplicates based on the number of PCR amplification per individual. Segregation patterns in the family suggested a partially duplicated genome structure and disomic inheritance. This indicates that the common carp is tetraploid and polyploidy occurred by allotetraploidy. Two primer pairs (HLJ021 and HLJ332) were estimated to amplify reduction based on the number of PCR amplification per individual. One allele in HLJ002 locus and HLJ332 locus was clearly lost in the gynogenetic family and the same as in six wild populations. Segregation patterns in the family suggested a partially diplodization genome structure. A hypothesis transition (dynamic) and equilibrium (static) were proposed to explain the common carp genome evolution between genome duplication and diploidization.
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