Multiple genotypes of mitochondrial DNA within a horse population from a small region in Yunnan Province of China.
Abstract: mtDNA genotypes of six domestic horses (three adult short horses whose heights are under 1 m and three common domestic horses) from a small region of 15 km2 in Malipo county of Yunnan province of China were investigated by the technique of restriction fragment length polymorphism (RFLP) with 16 restriction endonucleases which recognize 6-bp sequences. An average of 56 fragments for an individual was obtained. Unlike other domestic animals, this population of horses exhibits high mtDNA genetic diversity. Each of the six horses has a specific mtDNA genotype showing a pattern of multiple maternal origins, as suggested by fossil and literature records. We think the population of horses is an amazing seed-resource pool of horses and hence deserves to be paid more attention from the view of conservation genetics. However, it is also remarkable that we did not find any typical mtDNA genetic markers which would discriminate between short horses and common domestic horses.
Publication Date: 1994-10-01 PubMed ID: 7702551DOI: 10.1007/BF02426899Google Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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The research paper explores the high genetic diversity in the mitochondrial DNA (mtDNA) of domestic horses in a small region of Yunnan province, China, with no clear genetic markers distinguishing between short and common domestic horses.
Methodology
- The researchers examined the mtDNA genotypes in six domestic horses. Three of these were adult short horses (with heights under 1 m), and three were common domestic horses.
- For their investigation, they used a technique known as restriction fragment length polymorphism (RFLP) with 16 restriction endonucleases (enzymes used to cut DNA at specific sites).
- This process resulted in an average of 56 fragments for each individual horse’s mtDNA.
Findings
- Contrary to expectations of lower genetic diversity in small, isolated populations, the horse population from this region exhibited high mtDNA genetic diversity.
- Each of the six horses presented a unique mtDNA genotype. This finding indicates multiple maternal origins, which corroborates previous fossil and literary records.
Implications and Recommendations
- The researchers highlighted the value of this horse population as a remarkable seed-resource pool due to its high genetic diversity. They argued that from a conservation genetics perspective, this population deserves more attention.
- Despite identifying high mtDNA genetic diversity, the team was unable to find specific genetic markers in the mtDNA that could differentiate between short horses and common domestic horses.
- This finding implies that the differences in size might be determined by other factors, possibly genetic information outside of the mtDNA, hormonal influences, or environmental factors. Further research is needed to understand this aspect.
Cite This Article
APA
Wang W, Liu AH, Lin SY, Lan H, Su B, Xie DW, Shi LM.
(1994).
Multiple genotypes of mitochondrial DNA within a horse population from a small region in Yunnan Province of China.
Biochem Genet, 32(9-10), 371-378.
https://doi.org/10.1007/BF02426899 Publication
Researcher Affiliations
- Laboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, P.R. China.
MeSH Terms
- Animals
- China
- DNA, Mitochondrial / genetics
- Genetic Variation / genetics
- Genotype
- Horses / genetics
- Polymorphism, Restriction Fragment Length
References
This article includes 10 references
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Citations
This article has been cited 1 times.- Zhang T, Lu H, Chen C, Jiang H, Wu S. Genetic Diversity of mtDNA D-loop and Maternal Origin of Three Chinese Native Horse Breeds.. Asian-Australas J Anim Sci 2012 Jul;25(7):921-6.
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