Genetic variations and sequences analysis of MTATP6 and MTATP8 genes among different Chinese pig breeds.

Genetic variations and sequences analysis of MTATP6 and MTATP8 genes among different Chinese pig breeds.
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中国不同猪品种MTATP6和MTATP8基因遗传变异及序列分析

DOI:
10.1111/j.1439-0388.2010.00877.x
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发表时间:
2010-12
期刊:
Journal of animal breeding and genetics = Zeitschrift fur Tierzuchtung und Zuchtungsbiologie
影响因子:
--
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--
中科院分区:
其他
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--
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为了研究mtATP6和mtATP8基因在不同中国猪品种间的遗传变异,本研究从23个中国地方猪品种、3个中国野猪品种和3个欧洲猪品种的805个个体中扩增了两个包含mtATP8和mtATP6基因全编码区的425和743 bp片段。序列比较鉴定出总共17个替换,其中mtATP8基因中的6个可变位点和mtATP6基因中的11个替换。限制性内切酶 Fok I 揭示了所有测试样本中 mtATP6 和 mtATP8 基因中的 4 个多态性位点(nt8086、8176、8514 和 7784)和 4 个 RFLP 单倍型模式(A、B、C 和 D)。我们的数据显示AC组合单倍型起源于亚洲,BD被认为起源于欧洲。在所调查的欧洲品种中,亚洲 mtDNA 单倍型的平均频率为 38.3%,但每个品种之间存在差异 (13.3∼76.7%)。系统发育分析还考虑了数据库中一些已发表的序列;序列被分为三个不同的组,分别表示为 A、E1 和 E2。欧洲家猪中存在的亚洲AC单倍型与之前的分子研究结果和有据可查的历史完全一致。这项研究将有助于我们更好地了解中国不同猪品种之间线粒体基因的遗传变异。
To investigate the genetic variations of mtATP6 and mtATP8 genes among different Chinese pig breeds, two fragments of 425 and 743 bp containing the whole coding region of mtATP8 and mtATP6 genes were amplified with 805 individuals from 23 Chinese local pig breeds, three types of Chinese wild boars and three European pig breeds. Sequence comparison identified a total number of 17 substitutions including six variable sites in mtATP8 and eleven substitutions in mtATP6 gene. The restriction enzyme Fok I revealed four polymorphic sites (nt8086, 8176, 8514 and 7784), and four RFLP haplotype patterns (A, B, C and D) were identified in mtATP6 and mtATP8 genes among all tested samples. Our data showed AC combined haplotype originated from Asia and BD was regarded as European origin. The average frequency of Asian mtDNA haplotypes was 38.3% across the investigated European breeds but varied within each breeds (13.3∼76.7%). Phylogenetic analyses were performed also considering some published sequences in the databases; the sequences were divided into three distinct groups, denoted A, E1, and E2. The Asian AC haplotype existed among the European domestic pigs was fully consistent with the results of previous molecular studies and well-documented history. This study will help us to better understand the genetic variations of mitochondrial genes among different Chinese pig breeds.
DOI: --
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