Mitochondrial control region and 12S rRNA variation in Przewalski's horse (Equus przewalskii).

@article{Oakenfull1998MitochondrialCR,
  title={Mitochondrial control region and 12S rRNA variation in Przewalski's horse (Equus przewalskii).},
  author={E. Ann Oakenfull and Oliver A. Ryder},
  journal={Animal genetics},
  year={1998},
  volume={29 6},
  pages={
          456-9
        }
}
Variation in the control region and the 12S rRNA gene of all surviving mitochondrial lineages of Przewalski's horse was investigated. Variation is low despite the present day population being descended from 13 individuals probably representing animals from three different regions of its range. Phylogenetic comparison of these sequences, with sequences for the domestic horse, does not resolve the ancestral status of either horse. 

Fixed nucleotide differences on the Y chromosome indicate clear divergence between Equus przewalskii and Equus caballus.

The phylogenetic relationship between Equus przewalskii and E. caballus is often a matter of debate. Although these taxa have different chromosome numbers, they do not form monophyletic clades in a

Mitochondrial DNA analysis of horses recovered from a frozen tomb (Berel site, Kazakhstan, 3rd Century BC).

Phylogenetical analysis showed that these ancient horse's sequences, along with two Yakut ones, were distributed throughout the tree defined by modern horses' sequences and are closely related to them.

Variation in the mitochondrial control region sequence between the two maternal lines of the Sorraia horse breed

The mitochondrial control region sequence was compared between the two surviving matrilineal lineages of the Sorraia horse, showing three differences between them.

Mitochondrial and pedigree analysis in Przewalski's horse populations: implications for genetic management and reintroductions

Future concerns in Przewalski’s horse population management should emphasize on strict reproduction control to minimize inbreeding in captivity, followed by long-term genetic diversity guidelines and non-invasive monitoring in the reintroduction programmes.

A survey of equid mitochondrial DNA: Implications for the evolution, genetic diversity and conservation of Equus

The phylogenetic analysis of the mitochondrial DNA sequences of the control region and 12S rRNA gene provides further evidence that the deepest node in the phylogeny of the extant species is a divergence between twolineages, with the later speciation events of the zebras and asses occurring either as one or more rapid radiations, or withextensive secondary contact after speciation.

Mitochondrial genomes from modern horses reveal the major haplogroups that underwent domestication

Now that the major horse haplogroups have been defined, each with diagnostic mutational motifs (in both the coding and control regions), these haplotypes could be easily used to classify well-preserved ancient remains, assess the haplogroup variation of modern breeds, and evaluate the possible role of mtDNA backgrounds in racehorse performance.

Domestication of the horse: results based on microsatellite and mitochondrial DNA markers

An overview of the latest major findings in studies based on horse microsatellite data and mitochondrial DNA sequences is given.

Widespread origins of domestic horse lineages.

Domestication entails control of wild species and is generally regarded as a complex process confined to a restricted area and culture. Previous DNA sequence analyses of several domestic species have
...

References

SHOWING 1-10 OF 11 REFERENCES

Chromosome Complement: Differences between Equus caballus and Equus przewalskii, Poliakoff

The chromosomes of two Przewalski's horses (at Catskill Game Farm, New York), presumably ancestral wild horses from Mongolia, are identical, with more acrocentric and fewer metacentric elements than the chromosomes of the domestic horse.

Mitochondrial DNA evolution in the genus Equus.

The variation between species supports a divergence of extant lineages from a common ancestor approximately 3.9 Myr before the present, and trees constructed according to the parsimony principle indicate that the three extant zebra species represent a monophyletic group.

Mitochondrial DNA sequence evolution in the Arctoidea.

  • Y. ZhangO. Ryder
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1993
The results based on parsimony analysis show that the giant panda is more closely related to bears than to the lesser panda; the lesserpanda is neither closelyrelated to bears nor to the New World procyonids.

Dynamics of mitochondrial DNA evolution in animals: amplification and sequencing with conserved primers.

The polymerase chain reaction is used to amplify homologous segments of mtDNA from more than 100 animal species, including mammals, birds, amphibians, fishes, and some invertebrates, and the unexpectedly wide taxonomic utility of these primers offers opportunities for phylogenetic and population research.

Chromosome banding studies of the Equidae.

The chromosome banding patterns of all seven extant species of the horse family, Equidae, are presented. This mammalian family is composed of a single genus, Equus, notable for its rapid karyotypic ev

Sequence of the mitochondrial control region, tRNA(Thr), tRNA(Pro) and tRNA(Phe) genes from the black rhinoceros, Diceros bicornis.

A DNA fragment containing the mitochondrial tRNA, tRNA^" and t RNA^ genes and the control region (D-loop) was amplified from East African black rhinoceros utilizing conserved primer pairs L15926 + H00651 to deduce cloverleaf structures of mitochondrial t RNA and tRNA.

Przewalski’s Horse: Prospects for Reintroduction into the Wild

Morphology, habitat and taxonomy. In: Przewalski's Horse: The History and Biology of an Endangered Species (ed

  • 1994