Broader pattern of tandem repeats in the mitochondrial control region of Perciformes  

作　　者：崔朝霞 刘媛 朱嘉濠 

机构地区：[1]EMBL,Institute of Oceanology,Chinese Academy of Sciences [2]Graduate University of the Chinese Academy of Sciences [3]Department of Biology,Chinese University of Hong Kong

出　　处：《Chinese Journal of Oceanology and Limnology》2010年第4期785-794,共10页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.40676085)

摘　　要：Perciformes,the largest order of vertebrates with 20 suborders,is the most diverse fish order that dominates vertebrate ocean life.The complete mitochondrial control region(CR) of Trichiurus japonicus(Trichiuridae,Scombroidei) and Pampus sp.(Stromateidae,Stromateoidei) were amplified and sequenced.Together with data from GenBank,the tandem repeats in the mitochondrial CR from 48 species,which covered nine suborders of Perciformes,are reported in this study.The tandem repeats tend to be long in the suborder Percoidei and Stromateoidei.The identical repeats in 21 species of Cichlidae suggest a common origin and have existed before species divergence.Larimichthys crocea shows tandem repeats instead of the typical structure of the central conserved sequence blocks,which was first reported in Perciformes and vertebrates.This might have resulted from interruption of the polymerase activity during the H-strand synthesis.The four broader patterns presented here for the tandem repeats,including those in both the 5' and 3' ends,only in the either 5' or 3' end,and in the central conserved domain of the control region,will be useful for understanding the evolution of species.Perciformes,the largest order of vertebrates with 20 suborders,is the most diverse fish order that dominates vertebrate ocean life.The complete mitochondrial control region（CR） of Trichiurus japonicus（Trichiuridae,Scombroidei） and Pampus sp.（Stromateidae,Stromateoidei） were amplified and sequenced.Together with data from GenBank,the tandem repeats in the mitochondrial CR from 48 species,which covered nine suborders of Perciformes,are reported in this study.The tandem repeats tend to be long in the suborder Percoidei and Stromateoidei.The identical repeats in 21 species of Cichlidae suggest a common origin and have existed before species divergence.Larimichthys crocea shows tandem repeats instead of the typical structure of the central conserved sequence blocks,which was first reported in Perciformes and vertebrates.This might have resulted from interruption of the polymerase activity during the H-strand synthesis.The four broader patterns presented here for the tandem repeats,including those in both the 5＇ and 3＇ ends,only in the either 5＇ or 3＇ end,and in the central conserved domain of the control region,will be useful for understanding the evolution of species.

关 键 词：MTDNA control region tandem repeats PERCIFORMES EVOLUTION 

分 类 号：Q951[生物学—动物学]