Microsatellite Analysis of the Silkworm Strains (Bombyx mori) Originated from China
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초록
A total of 85 Chinese-origin silkworm strains preserved in Korea were genotyped for eight polymorphic microsatellite loci. We obtained per-locus number of alleles,ranging from 5 to 14 with an average value of 9.5, perlocus observed heterozygosity, ranging from 0.07 to 0.99, and per-locus polymorphic information content (PIC), ranging from 0.34 to 0.82, indicating that some loci are highly variable. Phylogenetic analysis with the eight concatenated microsatellite loci showed no clustering on the basis of known strain characteristics. A total of 22 strain-specific apomorphic alleles, which discriminate 19 among 85 silkworm strains were obtained from eight loci. These strain-specific alleles, thus, can casually be utilized for the discrimination of applicable strains without any further typing of other loci. Furthermore,a substantial number of homozygote strains,represented by 27 among 76 alleles in eight loci were found. These results collectively suggest that the silkworm microsatellite DNA is actually and potentially important molecular markers for the eventual discrimination of silkworm strains that are preserved as hundreds in Korea.
Abstract
A total of 85 Chinese-origin silkworm strains preserved in Korea were genotyped for eight polymorphic microsatellite loci. We obtained per-locus number of alleles,ranging from 5 to 14 with an average value of 9.5, perlocus observed heterozygosity, ranging from 0.07 to 0.99, and per-locus polymorphic information content (PIC), ranging from 0.34 to 0.82, indicating that some loci are highly variable. Phylogenetic analysis with the eight concatenated microsatellite loci showed no clustering on the basis of known strain characteristics. A total of 22 strain-specific apomorphic alleles, which discriminate 19 among 85 silkworm strains were obtained from eight loci. These strain-specific alleles, thus, can casually be utilized for the discrimination of applicable strains without any further typing of other loci. Furthermore,a substantial number of homozygote strains,represented by 27 among 76 alleles in eight loci were found. These results collectively suggest that the silkworm microsatellite DNA is actually and potentially important molecular markers for the eventual discrimination of silkworm strains that are preserved as hundreds in Korea.
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