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《Acta Botanica Boreali-Occidentalia Sinica》 2017-07
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Molecular Characteristics and Evolution of miR159 Family Members

CHEN Xu;WANG Jiayi;ZHANG Zihao;WANG Tianchi;LAI Zhongxiong;LIN Yuling;Institute of Horticultural Biotechnology,Fujian Agriculture and Forestry University;  
In order to explore the molecular characteristics and evolution of the miR159 family members,we studied the miR159 family members registered in the miRBase database by distribution statistics,constructing the phylogenetic trees,comparing different families,and predicting their secondary structures and target genes.The results showed that the miR159 family was widely distributed in the plant community,and the ferns may be the evolutionary ancestors of the miR159 family.Phylogenetic tree analysis showed that there were multiple evolutionary directions among the members of the plant miR159 family,but the miR159 family members of the same type of plants tended to be clustered,and the members from the same evolutionary direction were highly homologous.Mfold predicts that pre-miR159 spontaneously forms a typical,stable stem-loop secondary structure,and contains functional fragments ranged from 19~21bases,which may be miR159 mature body.Target gene analysis showed that miR159 family members mainly regulate MYBtranscription factor,transposable factor and hypothetical protein,but the types and numbers of target genes were differences among different species and among different members of the same species,especially between miR159-3p and miR159-5p.
【Key Words】: miR159family molecular characteristics evolutionary regularity target genes
【Fund】: 福建省自然科学基金杰出青年项目(2015J06004);; 国家自然科学基金(31672127 31572088);; 福建省重大专项(2015NZ0002-1);; 福建省新世纪人才项目(20151104);; 福建农林大学“杰出青年科研人才”培养专项基金(xjq201405)
【CateGory Index】: Q943.2
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