Haplogroup Classification of Korean Cattle Breeds Based on Sequence Variations of mtDNA Control Region

Abstract

Many studies have reported the frequency and distribution of haplogroups among various cattle breeds for verification of their origins and genetic diversity. In this study, 318 complete sequences of the mtDNA control region from four Korean cattle breeds were used for haplogroup classification. 71 polymorphic sites and 66 haplotypes were found in these sequences. Consistent with the genetic patterns in previous reports, four haplogroups (T1, T2, T3, and T4) were identified in Korean cattle breeds. In addition, T1a, T3a, and T3b sub-haplogroups were classified. In the phylogenetic tree, each haplogroup formed an independent cluster. The frequencies of T3, T4, T1 (containing T1a), and T2 were 66%, 16%, 10%, and 8%, respectively. Especially, the T1 haplogroup contained only one haplotype and a sample. All four haplogroups were found in Chikso, Jeju black and Hanwoo. However, only the T3 and T4 haplogroups appeared in Heugu, and most Chikso populations showed a partial of four haplogroups. These results will be useful for stable conservation and efficient management of Korean cattle breeds.

Abundant Genetic Diversity of Yunling Cattle Based on Mitochondrial Genome

“…In addition, unexpectedly, we found a high incidence of African T1 matrilines in Yunling cattle with an overall frequency of 14.73%. In Asia, the T1 haplogroup has previously been identified only in a few cattle individuals from China, Korea and Japan [21,23,24,25]. Recently, Li et al (2018) [20] detected a low frequency of T1a in Zhaotong cattle from Yunnan Province.…”

Comprehensive analysis of the mitochondrial DNA diversity in Chinese cattle

“…; Kim et al . ); their geographical distributions are adjacent to northeastern China. According to historical records, cattle were introduced from northern China to the Korean peninsula and Japan around 200 AD (Mukai et al .…”