ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (5): 696-703.doi: 10.11843/j.issn.0366-6964.2015.05.003

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Cloning and Tissues Expression Analysis of Otx-2 and the Associations with Seasonal Breeding in Sheep

GUO Ruo-ting1,LU Hui-wen2,OU Ke-peng1,WANG Ying1,LIU Yi1,GU Zhen-zhen1,LIU Xiao-jun3*   

  1. (1.College of Animal Science and Technology,Shihezi University,Shihezi 832003,China;2.TECON Animal Husbandry Technology Corporation,Changji 831100,China;3.College of Animal Science and Veterinary Medicine,Henan Agricultural University,Zhengzhou 450002,China)
  • Received:2014-10-30 Online:2015-05-23 Published:2015-05-23

Abstract:

In order to understand the effect of Otx-2 gene on sheep reproductive regulation,the part of CDS(Coding region) Otx-2,MT1,KISS-1,GnRH genes were cloned from Altay sheep hypothalamus tissue.Semi-quantitative RT-PCR was used to analyze the tissues(heart,liver,spleen,lung,kidney,large intestine,small inestine,stomach,brain,epencephalon,uterus,hypophysis,pineal body,hypothalamus,thyroid) expression profile of the genes.The expression patterns of Otx-2,MT1,KISS-1 and GnRH genes in hypothalamus with different periods were further investigated by real-time fluorescence quantitative PCR.The results showed that Otx-2 and KISS-1,MT1 mRNAs were expressed in many tissues tested,which hypothalamus showed higher expression levels for Otx-2 and KISS-1.In addition,the Otx-2 gene showed a similar expression pattern to KISS-1 and GnRH,which were significantly higher in the breeding seasons than that in the non-breeding seasons(P<0.01),and also significantly higher in the night than in the day time(P<0.01).It was concluded that Otx-2 gene might take part in seasonal reproduction in sheep.

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