ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (2): 260-267.doi: 10.11843/j.issn.0366-6964.2016.02.007

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Molecular Evolution Analyzing of miRNA-34 Gene Family and Its Expression in Goose Reprodutive Cycle

LIU Ran1,2# ,ZHANG Hui-zi1# ,YUN Hao-qi1,CHEN Yang1,2,HUANG Zheng-yang1,2,ZHANG Yang1,2,XU Qi1,2,CHEN Guo-hong1,2*   

  1. (1.College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China;2.Jiangsu Key Laboratory of Animal Genetics & Breeding and Molecular Design,Yangzhou 225009,China)
  • Received:2015-06-10 Online:2016-02-23 Published:2016-02-23

Abstract:

This experiment was conducted to investigate the miRNA-34 gene family evolutionary process and its expression regularity in goose reproductive cycle.The miRNA-34 genes were searched in literatures and miRBase.It’s genes were located by Ensemble database,and its phylogenetic tree was constructed by MEGA 6.0.In addition,the expression level of miRNA-34s was detected in ovarian tissue of goose reproductive cycle using RT-qPCR.A total 70 sequences in 27 species which indicated the extensive existence of miRNA-34s(miRNA-34a,miRNA-34b and miRNA-34c) in different species.The analysis of gene localization showed all miRNA-34 genes were located on the intergenic region(IGR).miRNA-34b and miRNA-34c shared on the same chromosome and they were closely linked in evolutionary process,which maybe caused by tandem repeats.Besides,the similar expression of miRNA-34s were detected in goose ovary tissues of pre-laying stage,ovulation,oviposition,and the broody phase.More miRNA-34s expression was detected at ovulation,oviposition than that in pre-laying and broody phase period.The miRNA-34s are highly conservative in evolution process,and play a role in regulation reproductive activity in goose.

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