AI Article Synopsis
- Indigenous cattle of India have unique adaptability and production traits, but their genetic diversity and origins are not well understood.
- Researchers sequenced the mitochondrial DNA of seven Indian cattle breeds, identifying 49 genetic variants and a common variant in the COII gene across all breeds.
- The study found close genetic relationships among these breeds, traced their divergence from European counterparts back nearly a million years, and suggested that modern zebu breeds originated from distinct lineages in South and North India around 30,000 to 20,000 years ago, providing insights for their conservation and management.
Article Abstract
Indigenous cattle of India belong to the species, and they possess various adaptability and production traits. However, little is known about the genetic diversity and origin of these breeds. To investigate the status, we sequenced and analyzed the whole mitochondrial DNA (mtDNA) of seven Indian cattle breeds. In total, 49 single-nucleotide variants (SNVs) were identified among the seven breeds analyzed. We observed a common synonymous SNV in the COII gene (m.7583G > A) of all the breeds studied. The phylogenetic analysis and genetic distance estimation showed the close genetic relationship among the Indian cattle breeds, whereas distinct genetic differences were observed between and cattle. Our results indicate a common ancestor for European Zwergzebu breed and South Indian cattle. The estimated divergence time demonstrated that the and cattle lineages diverged 0.92 million years ago. Our study also demonstrates that ancestors of present zebu breeds originated in South and North India separately ∼30,000 to 20,000 years ago. In conclusion, the identified genetic variants and results of the phylogenetic analysis may provide baseline information to develop appropriate strategies for management and conservation of Indian cattle breeds.
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| http://dx.doi.org/10.1080/10495398.2018.1476376 | DOI Listing |
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