Ontology highlight
ABSTRACT:
PROVIDER: PRJEB39831 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| scpMSY_SNP_withHeader.vcf.gz | Vcf | |||
| scpMSY_SNP_withHeader.vcf.gz.tbi | Vcf |
Items per page: 5 1 - 2 of 2 |
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Project description:single-copy MSY contigs of domestic sheep
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Project description:Tail fat in sheep (Ovis aries), has evolved mainly in response to cold weather for better energy storage. As things stand, too much tail fat in sheep can lead to a reduction in feed utilisation and is also unpopular with consumers due to the excessive fat content in the tail of sheep. Therefore, the need to find the mechanism of tail fat formation is obvious. In this study, we elected to utilise Kazakh sheep, prolific Suffolk sheep, and their hybrid F2 generation as research objects. Sheep transcriptome sequencing technology was employed to screen and explore target candidate genes related to sheep tail fat deposition. Comparison with RNA-seq data from fat-tailed and thin-tailed tissue, the LncRNA-mRNA-miRNA axis was identified as main functional pathway in the formation of fat in tail. Our results offer valuable insights into the fat deposition of sheep and provide a significant genomic resource for future genetic studies and the enhancement of genome-assisted breeding in sheep and other domestic animals.
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Project description:Inherited rickets of Corriedale sheep is characterized by decreased growth rate, thoracic lordosis and angular limb deformities. Previous outcross and backcross studies suggest it is a simple autosomal recessive disorder. A genome wide association study was conducted using the Illumina OvineSNP50 BeadChip on 20 related sheep including 17 affected and 3 carriers. A homozygous region of 199 consecutive single-nucleotide polymorphism (SNP) loci was identified in all the affected sheep, covering a region of 10Mbp on ovine chromosome 6. Among 91 candidate genes in this region, exon 6 of the dentin matrix protein 1 gene (DMP1) was sequenced to reveal 9 SNPs including a nonsense mutation 253T/C which introduced a stop codon (R145X) and could truncate C-terminal amino acids. Genotyping by PCR-RFLP for this mutation showed that, all 17 affected sheep were “T T” genotypes and the 27 phenotypically normal sheep were either “C T” or “C C”. This locus is not in complete linkage disequilibrium with the other 8 SNPs that can all be ruled out as candidates. Previous research has shown that mutations in DMP1 gene are responsible for autosomal recessive hypophosphatemic rickets in humans. Dmp1_knockout mice also exhibit rickets phenotypes. We believe the R145X mutation to be responsible for the inherited rickets found in Corriedale sheep. A simple diagnostic test can be designed to identify carriers with the defective “T” alleles. Affected sheep could be used as animal models for this form of human rickets, and for further investigation of the role of DMP1 in phosphate homeostasis
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