The novel coding region SNPs of PPARGC1A gene and their associations with growth traits in Chinese native cattle

摘要

The peroxisome proliferator-activated receptor gamma coactivator-1 alpha protein, encoded by the PPARGC1A gene, is a metabolic switch, which transcriptionally activates a complex pathway of mitochondrial biogenesis, lipid and glucose metabolism. Three SNPs (exon 3 c.396G > A, intron 9 c.1892 + 19C > T and exon 10 c.1971C > T) were found and identified in three Chinese native cattle breeds by PCR-SSCP, PCR-RFLP and DNA sequencing methods. All three populations had a low genetic diversity at SNP396 locus (PIC < 0.25) while possessed a moderate genetic diversity at SNP1892 locus (0.25 < PIC < 0.5). Association study indicated that the synonymous mutation c.396G > A significantly associated with body weight and average daily gain in Nanyang cattle at the adult age (P < 0.05). Our investigation will not only extend the spectrum of genetic variation of bovine PPARGC1A gene, but also provide useful information for the marker assisted selection in beef cattle breeding program.