The c-myc coding DNA sequences of cyprinids (Teleostei:Cypriniformes):Implications for phylogeny

查看全文 作　　者：KONG [1,2]XiangHui;WANG [1]XuZhen;GAN [1]XiaoNi;HE [1]ShunPing

机构地区：[1]Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;[2]College of Life Science, Henan Normal University, Xinxiang 453007, China

出　　处：《Chinese Science Bulletin》索引2007年第52卷第11期,共10页

基　　金：Supported by the Development Plan of the State Key Fundamental Research ofChina (Grant No. 2004CB117402);the National Natural Science Key Foundation ofChina (Grant No. 30530120);Chinese Postdoctoral Science Foundation (GrantNo. 2005037684) 摘　　要：The family Cyprinidae is one of the largest fish families in the world,which is widely distributed in East Asian,with obvious difference in characteristic size among species. The phylogenetic analysis of cy-prinid taxa based on the functionally important genes can help to understand the speciation and functional divergence of the Cyprinidae. The c-myc gene is an important gene regulating individual growth. In the present study,the sequence variations of the cyprinid c-myc gene and their phylogenetic significance were analyzed. The 41 complete sequences of the c-myc gene were obtained from cyprinids and outgroups through PCR amplification and clone. The coding DNA sequences of the c-myc gene were used to infer molecular phylogenetic relationships within the Cyprinidae. Myxocyprinus asiaticus (Catostomidae),Misgurnus anguillicaudatus (Cobitidae) and Hemimyzon sinensis (Homalopteridae) were assigned to the outgroup taxa. Phylogenetic analyses using maximum parsimony (MP). maximum likelihood (ML),and Bayesian retrieved similar topology. Within the Cyprinidae,Leuciscini and Barbini formed the monophyletic lineage respectively with high nodal supports. Leuciscini comprises Xeno-cyprinae,Cultrinae,East Asian species of Leuciscinae and Danioninae,Gobioninae and Acheilog-nathinae,and Barbini contains Schizothoracinae,Barbinae,Cyprininae and Labeoninae. Danio rerio,D. myersi and Rasbora trilineata were supposed to separate from Leuciscinae and Barbini and to form another lineage. The positions of some Danioninae species were still unresolved. Analyses of both amino acid variation with parsimony information and two high variation regions indicated that there is no correlation between variations of single amino acid or high variation regions and characteristic size of cyprinids. In addition,the species with smaller size were usually found to be basal within clades in the tree,which might be the results of the adaptation to the primitive ecology and survival pressure. 关键词：语系发生次序变化脱氧核糖核酸遗传基因

相关文献

参考文献（12）
引证文献（3）
耦合文献（23）

参考文献(12)

引证文献(3)

耦合文献(23)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

The c-myc coding DNA sequences of cyprinids (Teleostei:Cypriniformes):Implications for phylogeny

参考文献(12)

引证文献(3)

耦合文献(23)

用户提示