Isolation and analysis of microsatellites in the genome of turbot (Scophthalmus maximus L.)

文献类型: 外文期刊

第一作者: Ruan, Xiaohong

作者: Ruan, Xiaohong;Hu, Jingjie;Ruan, Xiaohong;Wang, Weiji;Kong, Jie

作者机构:

关键词: Microsatellite;turbot;enrichment library;primer

期刊名称:AFRICAN JOURNAL OF BIOTECHNOLOGY ( 影响因子:0.573; 五年影响因子:0.794 )

ISSN: 1684-5315

年卷期: 2011 年 10 卷 4 期

页码:

收录情况: SCI

摘要: A microsatellite enrichment libraries construction colony hybridization strategy was used for large-scale isolation of microsatellites from the whole genome of the turbot (Scophthalmus maximus L.). Using 14 different probes, paired-end sequencing of 952 clones resulted in 753 positive and individual clones. Using Vector NTI Suite 8.0 and tandem repeats finder software, 1004 tandem repeat sequences were found, including 831 microsatellites and 173 minisatellites, which accounted for 82.77 and 17.23% of the total repeat sequences, respectively. From the microsatellites, 158 polymorphic microsatellite markers were developed. A detailed analysis of the different nucleotide units across the whole genome of turbot was also presented, the dinucleotide unit was the dominant repeat unit among the six repeat unit types (as represented by number of repeats and the repeat unit cumulative length), while the pentanucleotide type was the most frequently found. The AGG (126.11) motif was the most variable repeat unit type in this research with a coefficient of variation value of 126.11. In this study, a negative correlation between the length of repeat units and the average copy number was detected (r = -0.5, P = 0.072).

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