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|Table of Contents|

油茶基因组微卫星特征分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年02期
Page:
47-51
Column:
研究论文
publishdate:
2012-04-10

Article Info:/Info

Title:
Characteristic analysis of microsatellites of Camellia spp.
Author(s):
SHI Jie YIN Tongming GUAN Hongwei DAI Xiaogang CHEN Jinhui SHI Jisen*
Key Lab of Forest Genetics and Biotechnology of the Ministry of Education, Nanjing Forestry University, Nanjing 210037,China
Keywords:
Camellia spp. microsatellite repeat motif length variation
Classification number :
S722
DOI:
10.3969/j.jssn.1000-2006.2012.02.010
Document Code:
A
Abstract:
There were 11 344 microsatellites(SSRs)ranged from 1 to 6 bp detected by analyzing the DNA sequences covering about 10% of genome Camellia. Among these SSRs, dinucleotide repeats were most abundant(27.1%). For the composition of microsatellites, A/T repeats were the most frequent motifs in mononucleotide repeats, and AT/TA, AG/TC repeats were the most in dinucleotide repeats, while(AAN)n,(AAAN)n and(AAAAN)n repeats were dominant in tri-, tetra- and pentanucleotide repeats, respectively. All the dominant repeat motifs for different type of SSRs were abundant in nucleotides A and T. In Camellia genome, microsatellites longer than 20bp accounted for about 11.7% of the detected SSRs. Repeats, repeat motif lengths were found negatively correlated with the variation rate except mononucleotide repeats, thus, the shorter repeats would have faster substitution rate.

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Last Update: 2012-04-10