scholarly journals Reality of Mitogenome Investigation in Preservation of Native Domestic Sheep Breeds

2021 ◽  
Author(s):  
András Gáspárdy
Keyword(s):  
Control Region ◽  
Genetic Background ◽  
Geographical Region ◽  
Domestic Sheep ◽  
Hereditary Material ◽  
Sheep Breeds

This chapter deals with the study of extranuclear hereditary material and the possibilities of using it to maintain endangered animal breeds. The chapter characterizes mtDNA, presents its genes and their functions, while also emphasizing the hypervariable control region. It reports on the results of previous researches, referring to international publications. It sheds light on promising areas of mitogenomic research. It shows the maternal genetic background of local native varieties according to the results of the study of available country/geographical region. It deals with reasons for endangerment and the arguments for preservation of autochthonous breeds. In addition, it gives place to discuss some exciting professional concepts in rare breed preservation.

РOPULATION-GENETIC RELATIONSHIP BETWEEN MOUFLON AND DOMESTIC SHEEP BREEDS BY HIGHLY POLYMORPHIC GENOMIC ELEMENTS

2020 ◽  
pp. 51-55
Author(s):  
V.I. GLAZKO ◽  
◽  
G.YU. KOSOVSKY ◽  
T.A. ERKENOV ◽  
T.T. GLAZKO ◽  
...  
Keyword(s):  
Genetic Relationship ◽  
Domestic Sheep ◽  
Sheep Breeds

scholarly journals Evidence for independent domestication of sheep mtDNA lineage A in India and introduction of lineage B through Arabian sea route

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ranganathan Kamalakkannan ◽  
Satish Kumar ◽  
Karippadakam Bhavana ◽  
Vandana R. Prabhu ◽  
Carolina Barros Machado ◽  
...  
Keyword(s):  
Arabian Sea ◽  
Indian Subcontinent ◽  
Domestic Sheep ◽  
Published Data ◽  
Sheep Population ◽  
Sheep Breeds ◽  
The World ◽  
History Of ◽  
Wild Sheep ◽  
Indian Sheep

AbstractIndia ranks the second in the world in terms of its sheep population with approximately 74.26 million represented by 44 well-described breeds in addition to several non-descript populations. Genetic diversity and phylogeography of Indian sheep breeds remain poorly understood, particularly for south Indian breeds. To have a comprehensive view of the domestication history of Indian sheep, we sequenced the mitochondrial DNA (mtDNA) control region (D-loop) and cytochrome b gene (CYTB) of 16 Indian domestic sheep breeds, most of them (13) from the south India. We analysed these sequences along with published data of domestic and wild sheep from different countries, including India. The haplotype diversity was relatively high in Indian sheep, which were classified into the three known mtDNA lineages, namely A, B and C. Lineage A was predominant among Indian sheep whereas lineages B and C were observed at low frequencies but C was restricted to the breeds of north and east India. The median joining network showed five major expanding haplogroups of lineage A (A1–A5). Out of which, A2, A4 and A5 were more frequent in Indian sheep in contrast to breeds from other parts of the world. Among the 27 Indian sheep breeds analysed, Mandya and Sonadi breeds were significantly different from other Indian breeds in the MDS analyses. This was explained by a very high contribution of lineage B into these two breeds. The Approximate Bayesian Computation (ABC) provided evidence for the domestication of lineage A sheep in the Indian subcontinent. Contrary to the current knowledge, we also found strong support for the introduction of lineage B into Indian subcontinent through sea route rather than from the Mongolian Plateau. The neighbour-joining tree of domestic and wild sheep revealed the close genetic relationship of Indian domestic sheep with Pakistani wild sheep O. vignei blanfordi. Based on our analyses and archaeological evidences, we suggest the Indian subcontinent as one of the domestication centres of the lineage A sheep, while lineage B sheep might have arrived into India from elsewhere via Arabian sea route. To the best of our knowledge, this is the first comprehensive study on Indian sheep where we have analysed more than 740 animals belonging to 27 sheep breeds raised in various regions of India. Our study provides insight into the understanding of the origin and migratory history of Indian sheep.

scholarly journals Mitochondrial DNA and Y-chromosomal diversity in ancient populations of domestic sheep (Ovis aries) in Finland: comparison with contemporary sheep breeds

2013 ◽  
Vol 45 (1) ◽  
pp. 2 ◽  
Author(s):  
Marianna Niemi ◽  
Auli Bläuer ◽  
Terhi Iso-Touru ◽  
Veronica Nyström ◽  
Janne Harjula ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Ovis Aries ◽  
Domestic Sheep ◽  
Sheep Breeds

Control Region of mtDNA identifies three migration events of sheep breeds in Algeria

2017 ◽  
Vol 155 ◽  
pp. 66-71 ◽  
Author(s):  
N. Ghernouti ◽  
M. Bodinier ◽  
D. Ranebi ◽  
A. Maftah ◽  
D. Petit ◽  
...  
Keyword(s):  
Control Region ◽  
Sheep Breeds

scholarly journals Genetic diversity and genetic origin of Lanping black-boned sheep investigated by genome-wide single-nucleotide polymorphisms (SNPs)

2020 ◽  
Vol 63 (1) ◽  
pp. 193-201
Author(s):  
Heli Xiong ◽  
Xiaoming He ◽  
Jing Li ◽  
Xingneng Liu ◽  
Chaochao Peng ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Single Nucleotide Polymorphisms ◽  
Structure Analysis ◽  
Genetic Background ◽  
Nucleotide Polymorphisms ◽  
Genetic Origin ◽  
Single Nucleotide ◽  
Sheep Breeds ◽  
Genome Wide ◽  
Nj Tree

Abstract. Lanping black-boned sheep was first discovered in the 1950s in Lanping county of China and characterized by black pigmentation on skin and internal organs. Due to the novel and unique trait, the genetic background of Lanping black-boned sheep is of great interest. Here, we genotyped genome-wide SNPs (single nucleotide polymorphisms) of Lanping black-boned sheep and Lanping normal sheep using Illumina OvineSNP50 BeadChip to investigate the genetic diversity and genetic origin of Lanping black-boned sheep. We also downloaded a subset SNP dataset of two Tibet-lineage sheep breeds and four other sheep breeds from the International Sheep Genomics Consortium (ISGC) as a reference for interpreting. Lanping black-boned sheep had a lower genetic diversity level when compared to seven other sheep breeds. Principal component analysis (PCA) showed that Lanping black-boned sheep and Lanping normal sheep were clustered into the Asian group, but there was no clear separation between the two breeds. Structure analysis demonstrated a high ancestry coefficient in Lanping black-boned sheep and Lanping normal sheep. However, the two populations were separated into two distinct branches in a neighbor-joining (NJ) tree. We further evaluated the genetic divergence using population FST, which showed that the genetic differentiation that existed between Lanping black-boned sheep and Lanping normal sheep was higher than that between Tibet sheep and Changthangi sheep, which revealed that Lanping black-boned sheep is a different breed from Lanping normal sheep on the genetic level. In addition, structure analysis and NJ tree showed that Lanping black-boned sheep had a relatively close relation with Tibet sheep. The results reported herein are a first step toward understanding the genetic background of Lanping black-boned sheep, and it will provide informative knowledge on the unique genetic resource conservation and mechanism of novel breed formation.

scholarly journals Meta-Analysis of Mitochondrial DNA Control Region Diversity to Shed Light on Phylogenetic Relationship and Demographic History of African Sheep (Ovis aries) Breeds

Biology ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 762
Author(s):  
George Wanjala ◽  
Zoltán Bagi ◽  
Szilvia Kusza
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Resources ◽  
Phylogenetic Relationship ◽  
Control Region ◽  
Demographic History ◽  
Meta Analysis ◽  
Ovis Aries ◽  
Phylogeographic Structure ◽  
Mitochondrial Dna Control Region ◽  
Sheep Breeds

To improve sheep breeding and conservation of genetic resources, the mitochondrial DNA control region (mtDNA CR) of 399 sequences of African indigenous sheep breeds from previously published research articles were meta-analyzed to elucidate their phylogenetic relationship, diversity, and demographic history. A total of 272 haplotypes were found, of which 207 were unique and a high level of mtDNA CR variability was observed. Generally, the number of polymorphic sites, nucleotide and haplotype diversity were high (284, 0.254 ± 0.012 and 0.993 ± 0.002, respectively). The median-joining (MJ) network of haplotypes produced three major haplogroups (A, B and C), with haplogroup B being dominant. A mixture of populations suggests a common matrilineal origin and lack of and/or a weak phylogeographic structure. Mismatch analysis showed recent expansion of North African breeds, whereas East African and continental populations exhibited selection pressures for adaptation. A slight historical genetic difference was also observed between the fat tail and thin tail sheep breeds. However, further investigations are required using more samples and long sequence segments to achieve deeper levels of conclusions on the African sheep phylogenetic relationship. The present meta-analysis results contribute to the general understanding of African native sheep populations for improved management of sheep genetic resources.

scholarly journals Novel and known signals of selection for fat deposition in domestic sheep breeds from Africa and Eurasia

PLoS ONE ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. e0209632 ◽  
Author(s):  
Salvatore Mastrangelo ◽  
Hussain Bahbahani ◽  
Bianca Moioli ◽  
Abulgasim Ahbara ◽  
Mohammed Al Abri ◽  
...  
Keyword(s):  
Fat Deposition ◽  
Domestic Sheep ◽  
Sheep Breeds ◽  
Selection For

Short tandem repeat (STR) based genetic diversity and relationship of domestic sheep breeds with primitive wild Punjab Urial sheep ( Ovis vignei punjabiensis )

2017 ◽  
Vol 148 ◽  
pp. 11-21 ◽  
Author(s):  
Rudolf Pichler ◽  
Tanveer Hussain ◽  
Wu Xu ◽  
Anam Aftab ◽  
Masroor Ellahi Babar ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Tandem Repeat ◽  
Short Tandem Repeat ◽  
Domestic Sheep ◽  
Sheep Breeds ◽  
Relationship Of ◽  
Short Tandem

scholarly journals Novel and known signals of selection for fat deposition in domestic sheep breeds from Africa and Eurasia

2018 ◽  
Author(s):  
Salvatore Mastrangelo ◽  
Hussain Bahbahani ◽  
Bianca Moioli ◽  
Abulgasim Ahbara ◽  
Mohammed Al Abri ◽  
...  
Keyword(s):  
Fat Deposition ◽  
Domestic Sheep ◽  
Selection Signatures ◽  
Selection Signature ◽  
Sheep Breeds ◽  
Fat Tail ◽  
Genome Wide ◽  
Geographic Origins ◽  
Genomic Regions ◽  
Great Complexity

Genomic regions subjected to selection frequently show signatures such as within-population reduced nucleotide diversity and outlier values of differentiation among differentially selected populations. In this study, we analyzed 50K SNP genotype data of 373 animals belonging to 23 sheep breeds of different geographic origins using the Rsb and FST statistical approaches, to identify loci associated with the fat-tail phenotype. We also checked if these putative selection signatures overlapped with regions of high-homozygosity (ROH). The analyses identified novel signals and confirmed the presence of selection signature in genomic regions that harbor candidate genes known to affect fat deposition. Several genomic regions that frequently appeared in ROH were also identified within each breed, but only two ROH islands overlapped with the putative selection signatures. The results reported herein provide the most complete genome-wide study of selection signatures for fat-tail in African and Eurasian sheep breeds; they also contribute insights into the genetic basis for the fat tail phenotype in sheep, and confirm the great complexity of the mechanisms that underlie quantitative traits, such as the fat-tail.

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