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Vol. 120, No. 1-2, 2008
Issue release date: May 2008
Section title: Original Article
Cytogenet Genome Res 120:150–156 (2008)
(DOI:10.1159/000118756)

Complete mitochondrial genomes of Bos taurus and Bos indicus provide new insights into intra-species variation, taxonomy and domestication

Hiendleder S. · Lewalski H. · Janke A.
aDepartment of Molecular Animal Breeding and Biotechnology, Gene Center of the Ludwig Maximilian University, München (Germany); bJS Davies Animal Genetics and Epigenetics Group, Roseworthy Campus, School of Agriculture, Food & Wine, and Research Centre for Reproductive Health, The University of Adelaide, Adelaide (Australia); cDepartment of Reproductive Biology, University of Veterinary Medicine Hannover, Hannover (Germany); dDepartment of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Lund (Sweden)

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Article / Publication Details

First-Page Preview
Abstract of Original Article

Accepted: 12/21/2007
Published online: 4/30/2008

Number of Print Pages: 7
Number of Figures: 2
Number of Tables: 1

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: http://www.karger.com/CGR

Abstract

The taurine and zebuine cattle breeds comprise the majority of the world cattle population but their taxonomic status is still controversial. The two forms of cattle are currently classified as Bos taurus and Bos indicus species and are differentiated primarily by the presence or absence of a hump. However, these two species hybridize readily, producing fully fertile offspring. We have determined and analyzed complete B. taurus and B. indicus mitochondrial genome sequences to investigate the extent of sequence divergences and to study their taxonomic status by molecular dating. The sequences encompassed 16,338 and 16,339 nucleotides, respectively, and differed at 237 positions. Estimated divergence times indicated that the two cattle lineages separated 1.7–2.0 million years ago. Combined phylogenetic analyses of 18 new and 130 previously reported extant B. taurus and B. indicus control region sequences with data from 32 archaeological specimens of the extinct wild aurochs (Bos primigenius) identified four major maternal lineages. B. primigenius haplotypes were present in all but the B. indicus lineage, and one B. taurus sequence clustered with B. primigenius P haplotypes that were not previously linked with domestic cattle. The B. indicus cluster and a recently reported new B. primigenius haplotype that represents a new lineage were approximately equidistant from the B. taurus cluster. These data suggest domestications from several differentiated populations of B. primigenius and a subspecies status for taurine (B. primigenius taurus) and zebuine (B. primigenius indicus) cattle.


  

Author Contacts

Request reprints from Professor Stefan Hiendleder
JS Davies Animal Genetics and Epigenetics Group, Roseworthy Campus
The University of Adelaide, Roseworthy SA 5371 (Australia)
telephone: +61 8 8303 7814; fax: +61 8 8303 7972
e-mail: Stefan.Hiendleder@adelaide.edu.au

  

Article Information

H.L. deceased in January 2005.

This work was supported by a financial grant (HI 503/3-1, WO 685/3-1) from the Deutsche Forschungsgemeinschaft. S.H. is a JS Davies Professorial Fellow.

Accepted in revised form for publication by M. Schmid,: 21 December 2007.
Published online: April 30, 2008
Number of Print Pages : 7
Number of Figures : 2, Number of Tables : 1, Number of References : 57

  

Publication Details

Cytogenetic and Genome Research

Vol. 120, No. 1-2, Year 2008 (Cover Date: May 2008)

Journal Editor: Schmid M. (Würzburg)
ISSN: 1424–8581 (Print), eISSN: 1424–859X (Online)

For additional information: http://www.karger.com/CGR


Article / Publication Details

First-Page Preview
Abstract of Original Article

Accepted: 12/21/2007
Published online: 4/30/2008

Number of Print Pages: 7
Number of Figures: 2
Number of Tables: 1

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: http://www.karger.com/CGR


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