Cloning and sequence analysis of Sox genes in a tetraploid cyprinid fish, Tor douronensis

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	Cloning and sequence analysis of Sox genes in a tetraploid cyprinid fish, Tor douronensis
	Guo BaoCheng 1,2; Li JunBing 1,2; Tong ChaoBo 1,2; He ShunPing 1
刊名	CHINESE SCIENCE BULLETIN
	2008-07-01
卷号	53 期号:13 页码:1988-1995
关键词	Tor douronensis Sox gene tetraploidy genome duplication gene diversity
ISSN号	1001-6538
通讯作者	He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	A PCR survey for Sox genes in a young tetraploid fish Tor douronensis (Teleostei: Cyprinidae) was performed to access the evolutionary fates of important functional genes after genome duplication caused by polyploidization event. Totally 13 Sox genes were obtained in Tor douronensis, which represent SoxB, SoxC and SoxE groups. Phylogenetic analysis of Sox genes in Tor douronensis provided evidence for fish-specific genome duplication, and suggested that Sox19 might be a teleost specific Sox gene member. Sequence analysis revealed most of the nucleotide substitutions between duplicated copies of Sox genes caused by tetraploidization event or their orthologues in other species are silent substitutions. It would appear that the sequences are under purifying selective pressure, strongly suggesting that they represent functional genes and supporting selection against all null allele at either of two duplicated loci of Sox4a, Sox9a and Sox9b. Surprising variations of the intron length and similarities of two duplicated copies of Sox9a and Sox9b, suggest that Tor douronensis might be an allotetraploidy.
英文摘要	A PCR survey for Sox genes in a young tetraploid fish Tor douronensis (Teleostei: Cyprinidae) was performed to access the evolutionary fates of important functional genes after genome duplication caused by polyploidization event. Totally 13 Sox genes were obtained in Tor douronensis, which represent SoxB, SoxC and SoxE groups. Phylogenetic analysis of Sox genes in Tor douronensis provided evidence for fish-specific genome duplication, and suggested that Sox19 might be a teleost specific Sox gene member. Sequence analysis revealed most of the nucleotide substitutions between duplicated copies of Sox genes caused by tetraploidization event or their orthologues in other species are silent substitutions. It would appear that the sequences are under purifying selective pressure, strongly suggesting that they represent functional genes and supporting selection against all null allele at either of two duplicated loci of Sox4a, Sox9a and Sox9b. Surprising variations of the intron length and similarities of two duplicated copies of Sox9a and Sox9b, suggest that Tor douronensis might be an allotetraploidy.
学科主题	Multidisciplinary Sciences
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	WHOLE-GENOME DUPLICATION ; RAY-FINNED FISHES ; EVOLUTION ; ZEBRAFISH ; FAMILY ; VERTEBRATES ; PUFFERFISH ; EXPRESSION ; DIVERSITY ; PATTERNS
收录类别	SCI
语种	英语
WOS记录号	WOS:000257327400011
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8080]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Guo BaoCheng,Li JunBing,Tong ChaoBo,et al. Cloning and sequence analysis of Sox genes in a tetraploid cyprinid fish, Tor douronensis[J]. CHINESE SCIENCE BULLETIN,2008,53(13):1988-1995.
APA	Guo BaoCheng,Li JunBing,Tong ChaoBo,&He ShunPing.(2008).Cloning and sequence analysis of Sox genes in a tetraploid cyprinid fish, Tor douronensis.CHINESE SCIENCE BULLETIN,53(13),1988-1995.
MLA	Guo BaoCheng,et al."Cloning and sequence analysis of Sox genes in a tetraploid cyprinid fish, Tor douronensis".CHINESE SCIENCE BULLETIN 53.13(2008):1988-1995.