Identification of 19-bp indel of the Pleomorphic Adenoma Gene 1 in Bali cattle population

Pleomorphic adenoma gene 1 (PLAG1) is a zinc finger transcription factor gene located on bovine chromosome 14 (BTA14) affecting body size and reproduction traits in cattle. The objective of this study was to identify 19-bp indel of the PLAG1 gene in Bali cattle population. A total of 96 blood samples of Bali Cattle were collected from Balai Pembibitan Ternak Unggul dan Hijauan Pakan Ternak (BPTU-HPT) Denpasar. Genomic DNA was extracted from blood samples and used to detect 19-bp indel of the PLAG1 gene using following primer pair 5’-TCCGAACAACAGGTGAGGGAGAAAT-3’ and 5’-CCACTTCAGG-GGTGCTCTAGGTTTG-3’. The polymerase chain reaction (PCR) products using DNA pool samples were sequenced to validate the PCR product and to find out novel polymorphism in Bali cattle population. The result showed that there was no variation found in Bali cattle population based on 19-bp indel of the PLAG1 gene, which is indicated by 123 bp DNA band. However, sequence analysis of the PLAG1 gene resulted in a novel single nucleotide polymorphism (SNP) at nucleotide number 32235 of the PLAG1 gene that changed guanine (G) to adenine (A). This novel SNP could be furthermore genotyped and it might be a potential candidate marker for body size and reproduction traits in Bali cattle