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Analysis of microsatellites derived from bee Ests
Bin Li1, Qing-You Xia, Cheng Lu
1The Key Sericultural Laboratory of Agricultural Ministry, Sericulture and Biotechnology Department Southwest Agricultural University, Chongqing 400716, China. libin@swau.cq.cn
Yi Chuan Xue Bao = Acta Genetica Sinica
|November 24, 2004
Summary
Simple sequence repeats (SSRs) analysis in honey bee (Apis) expressed sequence tags (ESTs) reveals hexanucleotide repeats are most abundant. These SSRs can enhance honey bee genome analysis for genetics and evolution studies.
Area of Science:
- Molecular Biology
- Genomics
- Bioinformatics
Background:
- Honey bees (Apis) are crucial for ecological and economic systems.
- Understanding honey bee genetics, evolution, and behavior is vital.
- Expressed sequence tags (ESTs) provide valuable genetic information.
Purpose of the Study:
- To analyze the frequency and density of simple sequence repeats (SSRs) in honey bee ESTs.
- To identify the most abundant SSR types and nucleotide compositions.
- To assess the utility of SSRs for advancing honey bee genome analysis.
Main Methods:
- Analysis of 15,869 honey bee ESTs (7.9 Mb) from a database.
- Identification and classification of SSR motifs (mono-, di-, tri-, tetra-, penta-, hexanucleotide repeats).
- Assessment of SSR distribution in redundant and non-redundant EST sets.
Main Results:
- SSR frequency was found to be 1/0.52 kb in honey bee ESTs.
- Hexanucleotide repeats (45.0%) were the most abundant SSR type.
- A-rich repeats predominated, while G-rich repeats were rare in coding regions.
Conclusions:
- SSR analysis provides insights into honey bee genetic diversity.
- The identified SSRs can serve as valuable molecular markers.
- SSR markers are expected to improve the resolution of honey bee genome analysis.