Molecular cloning and expression pattern of the porcine 5-aminolevulinate synthase 1 (ALAS1) gene and its association with reproductive traits
文献类型: 外文期刊
第一作者: Liu, L. Q.
作者: Liu, L. Q.;Li, F. E.;Deng, C. Y.;Li, F. E.;Deng, C. Y.
作者机构:
关键词: ALAS1;Porcine;Litter size;Polymorphism
期刊名称:GENETICS AND MOLECULAR RESEARCH ( 影响因子:0.764; 五年影响因子:0.912 )
ISSN: 1676-5680
年卷期: 2016 年 15 卷 1 期
页码:
收录情况: SCI
摘要: 5-Aminolevulinate synthase 1 (ALAS1) is the first enzyme in the heme biosynthetic pathway and is upregulated in follicular tissue during the early stages of ovulation. In this study, we isolated the complete coding sequence of the porcine ALAS1 gene and its 2-9 intron sequence, identified a single nucleotide polymorphism (SNP; T/C) in intron 9, and developed a PCR-MspI-restriction fragment length polymorphism genotyping assay. Association of the SNP with litter size was assessed in two populations [purebred Large White and the experimental synthetic (DIV) line]. Statistical analysis demonstrated that for total number of piglets born (TNB) in all parities, pigs with the CC genotype had an additional 0.68 and 0.74 piglets compared to the TC and TT animals (P < 0.05) in the DIV line, respectively. Purebred Large White sows inheriting the CC and TC genotypes gave birth to an additional 0.96 and 0.70 piglets compared to the TT animals (P < 0.05) in all parities, respectively. In addition, for TNB in all parities, a significant additive effect of 0.48 +/- 0.23 and 0.37 +/- 0.17 piglets/litter was detected in sows of both populations (P < 0.05), respectively. The highest levels of ALAS1 gene expression were observed in isolated ovarian granulosa cells 2 and 12 h after stimulation with pregnant mare serum gonadotropin human chorionic gonadotropin, which represents the time of follicular development and ovulation, respectively. Therefore, the ALAS1 gene was significantly associated with litter size in two populations and could be a useful molecular marker for the selection of increasing litter size in pigs.
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