ACTA AGRICULTURAE BOREALI-SINICA ›› 2018, Vol. 33 ›› Issue (2): 42-48. doi: 10.7668/hbnxb.2018.02.007

Special Issue: Animal husbandry Biotechnology

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Cloning and Temporal-spatial Expression Characteristics of GEM Gene in Tibetan Chicken

XU Qing1, LIN Sen1,2, XU Yaou1, ZHU Jiangjiang2, WANG Yong1,2, LIN Yaqiu1   

  1. 1. College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China;
    2. Key Laboratory of Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation, Chengdu 610041, China
  • Received:2018-01-05 Published:2018-04-28

Abstract: The aim of this study was to clone GEM gene of Tibetan chicken,determine its expression profiling in different tissues and developmental stages,and analyzed the relationship between the expression level of GEM gene and intramuscular fat(IMF) deposition,which might provide basis for meat quality and fat deposition.1,81,119,154,210 days Tibetan chicken were selected. After slaughter,the tissue samples of heart,liver,spleen,lung,kidney,breast muscle,thigh muscle and subcutaneous fat were collected for the total RNA extraction. The Tibetan chicken GEM gene was cloned by Reverse Transcription PCR(RT-PCR),the quantitative Real-time quantitative PCR(qPCR) was used to detect the expression level of GEM gene in different tissues and developmental stages of breast muscle and thing muscle. The results showed that the full length of GEM gene was 940 bp(GenBank accession number:KY747399),containing 894 bp CDS,24 bp 5'UTR and 22 bp 3'UTR,encoding 297 amino acids. The Tibetan chicken GEM protein shared higher similarity(83.50%-98.32%) with Gallus gallus, Anas platyrhynchos, Homo sapiens and Mus musculu. The tissues expression analysis showed that GEM gene kept the highest expression level in lung of Tibetan chicken,which was remarkably higher than other tissues(P<0.01),and also higher in spleen and subcutaneous fat. The temporal expression showed that the expression pattern of GEM gene was different in breast muscle and thigh muscle of Tibetan chicken in different stages. The expression level of GEM mRNA in breast muscle decreased with the increasing daily age,however,in thigh muscle increased first and then decreased with Tibetan chicken growth,and peaked at the daily age of 119. The expression levels of Tibetan chicken GEM gene in breast muscle and thigh muscle at different developmental stages presented unlike relationship with IMF content,and there were genders differences. And the correlation in thigh muscle of male Tibetan chicken was remarkably stronger(r=0.414, P<0.05). These data indicate that GEM gene may play an important role in lipid metabolism of Tibetan chicken.

Key words: Tibetan chicken, GEM gene, Tissue expression, Temporal expression, Intramuscular fat content

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Cite this article

XU Qing, LIN Sen, XU Yaou, ZHU Jiangjiang, WANG Yong, LIN Yaqiu. Cloning and Temporal-spatial Expression Characteristics of GEM Gene in Tibetan Chicken[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2018, 33(2): 42-48. doi: 10.7668/hbnxb.2018.02.007.

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