Affiliation:
1. College of Animal Science and Technology, Anhui Agricultural University , Hefei 230036 , China
2. Anhui Provincial Key Laboratory of Local Animal Genetic Resources Conservation and Bio-breeding , Hefei 230036 , China
3. Huangshan Qiangying Duck Breeding Co. Ltd. , Huanshan 245461 , China
Abstract
AbstractDouhua chicken is a unique local breed from Anhui Province, China. This study aimed to illustrate the Douhua chicken mitogenome and clarify its phylogenetic status by sequencing and annotating the complete mitochondrial genome using high-throughput sequencing and primer walking. Phylogenetic analysis through the Kimura 2-parameter model indicated the maternal origin of Douhua chicken. The results revealed that the mitochondrial genome is a closed circular molecule (16,785 bp) that consists of 13 protein-coding genes, 22 transfer RNA (tRNA) coding genes, two ribosomal RNA (rRNA) coding genes, and a control region. The base composition of the Douhua chicken mitogenome contains 30.3% A, 23.7% T, 32.5% C, and 13.5% G, and the haplotype and nucleotide diversity values are 0.829 (Hd) and 0.00441 (Pi), respectively. Furthermore, 10 haplotypes of D-loop sequences among 60 Douhua chickens were identified and distributed into four haplogroups (A, C, D, and E). Overall, the result of the present study indicates that Douhua chicken may have originated from Gallus gallus, and this process was influenced by Gallus gallus spadiceus, Gallus gallus murghi, and Gallus gallus bankiva. This study provides novel mitogenome data to support further phylogenetic and taxonomic studies on Douhua chicken. Additionally, the findings of this study will provide deeper insights for identifying the genetic relationships among populations and tracing maternal origins based on phylogenetic considerations for use in studies on the geographic conservation, utilization, and molecular genetics of poultry species.
Funder
Program for Young Outstanding Scientists of University
Natural Science Foundation from Department of Anhui Provincial Education
University-Industry Collaborative Education Program of Ministry of Education
Quality Project of Department of Education of Anhui Province
Jiangsu Provincial key Laboratory of Poultry Genetics and Breeding
Guangdong Provincial key Laboratory of Animal Molecular Design and Precise Breeding
Publisher
Oxford University Press (OUP)
Subject
Genetics,Animal Science and Zoology,General Medicine,Food Science