Identification of domesticated silkworm varieties using single nucleotide polymorphisms detected from mitochondrial genomes
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Silkworms have recently attracted attention as healthy functional foods. Different varieties of silkworms have functional differences; thus, there is an emerging need for variety identification. In this study, we sequenced complete mitochondrial genomes (mitogenomes) of ten government-recommended silkworm varieties (BaekHwang, BaekOk, DaeBaek, DaeBak, DaeHwang, GoldenSilk, HanSaeng, JooHwang, KumKang, and KumOk). Comparison of these sequences allowed us to select the single nucleotide polymorphisms (SNPs) in 34 sites that are specific to six silkworm varieties: 13 in DaeBak, 8 in GoldenSilk, 9 in KumKang, 2 in BaekHwang, 1 in BaekOk, and 1 in DaeHwang. Among these each one SNP per variety was amplified by preparing variety-specific primers and then using tetra-primer amplification refractory mutation system PCR (T-ARMS-PCR). As a result, it was possible to identify these six varieties among the ten silkworm varieties, evidencing that SNPs developed from mitogenomes are useful marker for the discrimination of genetically closer silkworm varieties.
Abstract
Silkworms have recently attracted attention as healthy functional foods. Different varieties of silkworms have functional differences; thus, there is an emerging need for variety identification. In this study, we sequenced complete mitochondrial genomes (mitogenomes) of ten government-recommended silkworm varieties (BaekHwang, BaekOk, DaeBaek, DaeBak, DaeHwang, GoldenSilk, HanSaeng, JooHwang, KumKang, and KumOk). Comparison of these sequences allowed us to select the single nucleotide polymorphisms (SNPs) in 34 sites that are specific to six silkworm varieties: 13 in DaeBak, 8 in GoldenSilk, 9 in KumKang, 2 in BaekHwang, 1 in BaekOk, and 1 in DaeHwang. Among these each one SNP per variety was amplified by preparing variety-specific primers and then using tetra-primer amplification refractory mutation system PCR (T-ARMS-PCR). As a result, it was possible to identify these six varieties among the ten silkworm varieties, evidencing that SNPs developed from mitogenomes are useful marker for the discrimination of genetically closer silkworm varieties.
참고문헌 (20)
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