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Selection footprints and haplotypes distribution on the genome of Arabian Peninsula dromedary camels

ABSTRACT: signatures of selection on dromedary genome

PROVIDER: PRJEB66318 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	ERR12354400_1.fastq.gz	Fastqsanger.gz
	ERR12354400_2.fastq.gz	Fastqsanger.gz
	ERR12354402_1.fastq.gz	Fastqsanger.gz
	ERR12354402_2.fastq.gz	Fastqsanger.gz

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Project description:Dromedary camels (Camelus dromedarius) are members of the Camelini tribe within the Camelidae family. They are distributed throughout North Africa, the Arabian Peninsula and Southeast Asia. This domestic species is characterized by its superior adaptability to the harsh desert environment. In this study, whole autosomal data of 29 dromedary samples from the Southeast Arabian Peninsula in Oman; 10 from Muscat, 14 from Al-Batinah, and 5 from Al-Sharqiya, were investigated to assess their genetic relationship and to define candidate signatures of positive selection. A minimal genetic distinction that separates Muscat dromedaries from the other two populations was observed, with a degree of genetic admixture between them. Using the de-correlated composite of multiple signals (DCMS) approach, a total of 47 candidate regions within the autosomes of these dromedary populations were defined with signatures of positive selection. These candidate regions harbor a total of 154 genes that are mainly associated with functional categories related to immune response, lipid metabolism and energy expenditure, optical and auditory functions, and long-term memory. Different functional genomic variants were called on the candidate regions and respective genes that warrant further investigation to find possible association with the different favorable phenotypes in dromedaries. The output of this study paves the way for further research efforts aimed at defining markers for use in genomic breeding programs, with the goal of conserving the genetic diversity of the species and enhancing its productivity.

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