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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jgen/097/05/1131-1138

    • Keywords

       

      gayal; bovine spongiform encephalopathy; PRNP gene; indels.

    • Abstract

       

      Resistance to fatal disease bovine spongiformencephalopathy (BSE), due to misfolded prion protein in cattle, is associated with a 23-bp indel polymorphism in the putative promoter and a 12-bp indel in intron 1 of the PRNP gene. Gayal (Bos frontalis) is an important semiwild bovid species and of great conservation concern, but till today these indel polymorphisms have not been evaluated in gayals. Therefore, we collected 225 samples of gayals and evaluated the genetic indel polymorphism in the two regions of this PRNP gene. The results revealed high allelic frequencies of insertions at these indel sites: 0.909 and 0.667 for, respectively, the 23 bp and 12 bp indels, both also with significant genotype frequencies (χ2: 9.81; 23 bp and χ2: 43.56; 12 bp). At the same time, the haplotype data showed indel polymorphisms with extremely low deletion (0.01) in both regions of the PRNP gene. We compared these data with those reported for healthy and BSE-affected cattle (Bos taurus) breeds from two European countries, Germany and Switzerland, and significant difference (P <0.001) was observed between BSE-affected as well as the healthy cattle. Further, our datawere also extensively compared with previous reports on BSE and highly significant (P <0.001) outcomes were observed. This result suggested negligible genetic susceptibility to BSE in gayals. To the best of our knowledge, this study is the first comprehensive deciphering information about the PRNP indel polymorphisms of 23 bp and 12 bp in gayals, a semiwild species of China.

    • Author Affiliations

       

      SAMEEULLAH MEMON1 GUOZHI LI1 HELI XIONG1 LIPING WANG1 XIANGYING LIU1 MENGYA YUAN1 WEIDONG DENG1 DONGMEI XI1

      1. Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, People’s Republic of China
    • Dates

       
  • Journal of Genetics | News

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