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|標題:||SSCP analysis in the D-loop region of porcine mitochondrial DNA as confirmed by sequence diversity||作者:||Lin, C.S.
|關鍵字:||cytoplasmic genetic-variation;rapid evolution;pcr-sscp;polymorphism;mutations;origin;breeds;pigs||Project:||Journal of Animal Breeding and Genetics-Zeitschrift Fur Tierzuchtung Und Zuchtungsbiologie||期刊/報告no：:||Journal of Animal Breeding and Genetics-Zeitschrift Fur Tierzuchtung Und Zuchtungsbiologie, Volume 115, Issue 1, Page(s) 73-78.||摘要:||
Sequence polymorphism of the displacement loop (D-loop) region in mitochondrial DNA (mtDNA) is a cytoplasmic DNA marker. Since the analysis of single-strand conformation polymorphism (SSCP) has been used for detection of substitutions in nucleotide sequence, this technique was employed to investigate the porcine sequence polymorphism in the D-loop region. The primers were prepared to amplify the most polymorphic site with 392-bp in the D-loop region from whole blood of pigs. The PCR-SSCP patterns were Identical in European breeds Landrace and Duroc, bur were different in Yorkshire and in Taiwanese breeds Lanyu and Taoyuan. Nucleotide sequence analysis in the 392-bp PCR products were completely in accordance with the PCR-SSCP patterns. There was only a single nucleotide substitution between Yorkshire and Landrace/Duroc pig and 2-3 nucleotide substitutions (dependent on the breed and individual) between Taiwanese Lanyu and Taoyuan. As many as 10-11 nucleotides were different between European and Taiwanese breeds in which most differences clustered Fig. 3. Nucleotide sequence surrounding the highly variable D-loop region with comparison between the commercial European and Taiwanese breeds. The different nucleotide sequences between two groups are marked by underlining. The region compared is the nucleotides ranging from 6 to 46 (shown in parentheses) as shown in Fig. 2 within a certain region in the D-loop. The results suggest that PCR-SSCP analysis may be used for detecting single nucleotide substitution in the porcine mtDNA D-loop region and show the diversified sequence in this region between European and Asian origins.
|Appears in Collections:||動物科學系|
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