[中国西南地区猪的线粒体DNA多样性]

[The mitochondrial DNA diversity of pigs in southwest China].

作者信息

Lan H, Wang W, Shi L

机构信息

Laboratory of Cellular and Molecular Evolution, Chinese Academy of Science.

出版信息

Yi Chuan Xue Bao. 1995;22(1):28-33.

PMID:8703513

Abstract

Twenty restriction endonucleases, ApaI, AvaI, BamHI, BclI, BglI, BglII, ClaI, EcoRI, EcoRV, HindIII, HpaI, KpnI, PstI, PvuII, SacI, SalI, ScaI, SmaI, XbaI, XhoI were used to investigate the mitochondrial DNA polymorphism of pigs from 11 localities in southwest China. Among the 28 animals analyzed, 27 restriction morphs were detected, which can be sorted into 6 haplotypes. The average genetic distance among haplotypes (P) is 0.004, and the value of average sequence variation in pig population (pi) is 0.122%. Our results suggest that the genetic diversity within the pigs is remarkably scarce. The pigs in southwest China may have origineted from a late common ancester, and were likely impacted by the founder effect.

摘要

使用20种限制性内切酶（ApaI、AvaI、BamHI、BclI、BglI、BglII、ClaI、EcoRI、EcoRV、HindIII、HpaI、KpnI、PstI、PvuII、SacI、SalI、ScaI、SmaI、XbaI、XhoI）研究了中国西南11个地区猪的线粒体DNA多态性。在所分析的28只动物中，检测到27种限制性酶切形态，可分为6种单倍型。单倍型间的平均遗传距离（P）为0.004，猪群体中的平均序列变异值（pi）为0.122%。我们的结果表明猪的遗传多样性非常稀少。中国西南地区的猪可能起源于一个较近的共同祖先，并且可能受到奠基者效应的影响。