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Analysis of genetic variation of inducible nitric oxide synthase and natural resistance-associated macrophage protein 1 loci in Malaysian native chickens

机译:马来西亚本地鸡中诱导型一氧化氮合酶和与自然抗性相关的巨噬细胞蛋白1基因座的遗传变异分析

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The genetic diversity of 100 Malaysian native chickens was investigated using polymerase chain reaction-restriction fragment polymorphism (PCR-RFLP) for two candidate genes: inducible nitric oxide synthase (INOS) and natural resistance-associated macrophage protein 1 (NRAMP1). The two genes were selected because of their important role in chicken’s immune system. INOS and NRAMP1 PCR products were digested by?AluI and?SacI restriction enzymes, respectively. The restriction digests produced fragment sizes of 322 and 173 bp for INOS and 722 and 79 bp for NRAMP1 as one allele and an undigested PCR product as the other allele. Both loci were polymorph, however only INOS gene showed Hardy-Weinberg equilibrium. Average heterozygosity and the Shannon information index (I) was 0.43 and 0.62 for INOS and 0.48 and 0.68 for NRAMP1 genes, respectively. The observed polymorphism in this study shows the ability of these candidate genes in marker assisted selection and introgression programs to increase resistance to diseases in both Malaysian native and commercial chickens.
机译:使用聚合酶链反应-限制性片段多态性(PCR-RFLP)研究了两个候选基因的100只马来西亚本地鸡的遗传多样性:诱导型一氧化氮合酶(INOS)和与自然抗性相关的巨噬细胞蛋白1(NRAMP1)。选择这两个基因是因为它们在鸡的免疫系统中起重要作用。 INOS和NRAMP1 PCR产物分别用?AluI和?SacI限制酶消化。限制性酶切产生的片段大小对于一个INOS是322和173 bp,对于NRAMP1是722和79 bp,另一个等位基因是未消化的PCR产物。两个基因座都是多态性,但是只有INOS基因显示出Hardy-Weinberg平衡。对于INOS,平均杂合度和Shannon信息指数(I)分别为0.43和0.62,对于NRAMP1基因分别为0.48和0.68。在这项研究中观察到的多态性表明,这些候选基因在标记辅助选择和基因渗入程序中具有增强马来西亚天然鸡和商品鸡对疾病的抵抗力的能力。

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