Genomic Structural Diversity in Local Goats: Analysis of Copy-Number Variations
1
Dipartimento Scienze Agrarie, Alimentari e Forestali, University of Palermo, 90128 Palermo, Italy
2
Dipartimento Scienze Veterinarie, University of Messina, 98168 Messina, Italy
*
Author to whom correspondence should be addressed.
Animals 2020, 10(6), 1040; https://doi.org/10.3390/ani10061040
Received: 30 March 2020
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Revised: 5 June 2020
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Accepted: 12 June 2020
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Published: 16 June 2020
(This article belongs to the Collection Genomics, Transcriptomics, and Computational Biology for Biodiversity Studies and Quality-Related Traits Selection in Livestock)
Simple Summary
Copy-number variations (CNVs) are one of the widely dispersed forms of structural variations in mammalian genomes and are known to be present in genomic regions that regulate important physiological functions. In this study, CNV detection was performed starting from genotypic data of 120 individuals, belonging to four Sicilian dairy goat breeds, genotyped with the Illumina GoatSNP50 BeadChip array. Using PennCNV software, a total of 702 CNVs were identified in 107 individuals. These were merged in 75 CNV regions (CNVRs), i.e., regions containing CNVs overlapped by at least 1 base pair. Functional annotation of the CNVRs allowed the identification of 139 genes/loci within the most frequent CNVRs, which are involved in local adaptation, mild behaviour, immune response, reproduction, and olfactory receptors. This study provides insights into the genomic variations within these Italian goat breeds and should be of value for future studies to identify the relationships between this type of genetic variation and phenotypic traits.
Copy-number variations (CNVs) are one of the widely dispersed forms of structural variations in mammalian genomes, and are present as deletions, insertions, or duplications. Only few studies have been conducted in goats on CNVs derived from SNP array data, and many local breeds still remain uncharacterized, e.g., the Sicilian goat dairy breeds. In this study, CNV detection was performed, starting from the genotypic data of 120 individuals, belonging to four local breeds (Argentata dell’Etna, Derivata di Siria, Girgentana, and Messinese), genotyped with the Illumina GoatSNP50 BeadChip array. Overall, 702 CNVs were identified in 107 individuals using PennCNV software based on the hidden Markov model algorithm. These were merged in 75 CNV regions (CNVRs), i.e., regions containing CNVs overlapped by at least 1 base pair, while 85 CNVs remained unique. The part of the genome covered by CNV events was 35.21 Mb (1.2% of the goat genome length). Functional annotation of the CNVRs allowed the identification of 139 genes/loci within the most frequent CNVRs that are involved in local adaptations, such as coat colour (ADAMTS20 and EDNRA), mild behaviour (NR3C2), immune response (EXOC3L4 and TNFAIP2), reproduction (GBP1 and GBP6), and olfactory receptors (OR7E24). This study provides insights into the genomic variations for these Sicilian dairy goat breeds and should be of value for future studies to identify the relationships between this type of genetic variation and phenotypic traits.
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MDPI and ACS Style
Di Gerlando, R.; Mastrangelo, S.; Moscarelli, A.; Tolone, M.; Sutera, A.M.; Portolano, B.; Sardina, M.T. Genomic Structural Diversity in Local Goats: Analysis of Copy-Number Variations. Animals 2020, 10, 1040. https://doi.org/10.3390/ani10061040
AMA Style
Di Gerlando R, Mastrangelo S, Moscarelli A, Tolone M, Sutera AM, Portolano B, Sardina MT. Genomic Structural Diversity in Local Goats: Analysis of Copy-Number Variations. Animals. 2020; 10(6):1040. https://doi.org/10.3390/ani10061040
Chicago/Turabian StyleDi Gerlando, Rosalia, Salvatore Mastrangelo, Angelo Moscarelli, Marco Tolone, Anna M. Sutera, Baldassare Portolano, and Maria T. Sardina. 2020. "Genomic Structural Diversity in Local Goats: Analysis of Copy-Number Variations" Animals 10, no. 6: 1040. https://doi.org/10.3390/ani10061040
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