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Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
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Mitochondrial DNA diversity patterns in Pakistani buffalo.

M E Babar1, T Hussain, M Imran

  • 1Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan. drbabar@hotmail.com

Animal Genetics
|April 11, 2012
PubMed
Summary
This summary is machine-generated.

This study analyzed mitochondrial DNA from Pakistani river buffalo (Bubalus bubalis), revealing diverse maternal lineages and suggesting Pakistan

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Area of Science:

  • Genetics
  • Zoology
  • Animal Science

Background:

  • The Indian subcontinent is recognized as a primary center for river buffalo (Bubalus bubalis) domestication.
  • Previous research on mitochondrial DNA diversity has provided insights into buffalo domestication history.
  • Studies remain incomplete without analyzing genetic data from Pakistan, home to the world's second-largest buffalo population.

Purpose of the Study:

  • To investigate the mitochondrial D-loop sequence diversity in five breeds of Pakistani buffalo.
  • To contribute crucial data from Pakistan to a comprehensive understanding of river buffalo domestication.
  • To explore the maternal lineage origins and population dynamics of Pakistani buffalo populations.

Main Methods:

  • Analysis of 503-bp mitochondrial D-loop sequences from 123 Pakistani buffalo across five breeds.
  • Identification of sequence variations, including haplotypes and singletons.
  • Phylogenetic analyses using Bayesian, maximum parsimony, neighbor-joining, and UPGMA methods.
  • Multidimensional scaling of pairwise F(ST) values and reduced median network analysis.

Main Results:

  • Discovery of 52 distinct haplotypes, with 40 being singletons, indicating significant genetic diversity.
  • Phylogenetic analyses supported domestication and introgression from multiple wild maternal lineages.
  • No strong breed clustering was observed, suggesting extensive gene flow or shared ancestry.
  • Evidence for population expansion originating from multiple haplotype sets.
  • Confirmation that Pakistani buffalo belong to the river type.

Conclusions:

  • Pakistani river buffalo exhibit substantial mitochondrial D-loop sequence diversity.
  • The genetic data supports the hypothesis of domestication involving multiple maternal lineages from wild stocks.
  • The findings suggest that regions of Pakistan bordering India may have played a role in the initial domestication of river buffalo.
  • This study enhances the understanding of buffalo domestication history by including data from a key population center.