长江水系草鱼遗传多样性的微卫星DNA分析

廖小林, 俞小牧, 谭德清, 童金苟

廖小林, 俞小牧, 谭德清, 童金苟. 长江水系草鱼遗传多样性的微卫星DNA分析[J]. 水生生物学报, 2005, 29(2): 113-119.
引用本文: 廖小林, 俞小牧, 谭德清, 童金苟. 长江水系草鱼遗传多样性的微卫星DNA分析[J]. 水生生物学报, 2005, 29(2): 113-119.
LIAO Xiao-Lin, YU Xiao-Mu, TAN De-Qing, TONG Jin-Gou. MICROSATELLITE DNA ANALYSIS OF GENETIC DIVERSITY OF GRASS CARP IN YANGTZE RIVER SYSTEM[J]. ACTA HYDROBIOLOGICA SINICA, 2005, 29(2): 113-119.
Citation: LIAO Xiao-Lin, YU Xiao-Mu, TAN De-Qing, TONG Jin-Gou. MICROSATELLITE DNA ANALYSIS OF GENETIC DIVERSITY OF GRASS CARP IN YANGTZE RIVER SYSTEM[J]. ACTA HYDROBIOLOGICA SINICA, 2005, 29(2): 113-119.

长江水系草鱼遗传多样性的微卫星DNA分析

基金项目: 

中国科学院知识创新重要方向性项目 (KSCX2SW 110 )

国家自然科学基金 (3 2 0 710 11)资助

MICROSATELLITE DNA ANALYSIS OF GENETIC DIVERSITY OF GRASS CARP IN YANGTZE RIVER SYSTEM

  • 摘要: 利用已发表的鲤微卫星引物在草鱼中进行PCR扩增,结果有5对引物(6个座位)能成功扩增并且有较高多态性,等位基因数在3-7个之间。这些异种扩增的草鱼微卫星符合孟德尔遗传规律。测序证明草鱼中的微卫星核心重复序列部分与鲤中的原始核心序列相似,也有一些变化。随后用这6个多态微卫星座位研究了来自长江水系的四个草鱼群体的遗传结构,结果显示每个群体的平均等位基因数在38与48之间,平均观测杂合度(Ho)在04000与05741之间,平均期望杂合度(HE)在04773与06489之间,有多个座位在不同的群体中偏离哈代-温伯格平衡。遗传距离分析表明四川群体与洞庭湖群体遗传距离最远,而嘉鱼群体与鄱阳湖群体遗传距离较近。分子变异分析(AMOVA)表明,群体内遗传变异与群体间遗传变异分别占总遗传变异的9560%与440%,固定系数(FST)为0044,这表明长江水系草鱼目前的群体分化很微弱。
    Abstract: Grass carp (Ctenopharyngodon idellus) has been one of the most important traditional domestic freshwater aquaculture fish in China. Its habitat includes major rivers and lakes in China, but it is most abundant in Yangtze River and its adjacent lakes. In the present study, the genetic diversity and population structure of grass carp from Yangtze River system were investigated using microsatellite DNA markers. In total 109 individuals were collected from four sites of the Yangtze River System including Yibin, Sichuan; Jiayu, Hubei; Dongting Lake, Hunan and Poyang Lake, Jiangxi. A full-sib family was prepared using artifical fertilization. Genomic DNA was extracted from ethanol-preserved fin tissues by using phenol-chloroform method. Using a set of microsatellite primers originally reported in common carp (Cyprinus carpio), we carried out many cross-species PCR amplifications. PCR products were separated on 7.5% nondenaturing polyacrylamide gels, stained with ethidium bromide in water and visualized with ultraviolet. A successfully amplified locus with clear banding pattern (i.e. one or two bands) was subject to test for genetic segregation in a full-sib grass carp family before it was considered to be used in population analysis. Purified PCR products were cloned into E. coli DH5α strain using pMD-18T vector, and positive clones were selected and sequenced by Shanghai BioAsia Biotech Company for confirmation of repeat motifs. The size of alleles was scored by comparison with pBR322 DNA/Msp I markers. Five microsatellite primers successfully amplified six loci with reasonable polymorphism in grass carp. The number of alleles in these loci ranged from 3 to 7. These six microsatellite loci were inherited with Mendelian mode in a test full-sib grass carp family. Sequencing analysis for the PCR products in grass carp confirmed that all these six loci contained core repeat motifs, and some di-nucleotide motifs were similar to those in common carp (e.g. CA repeat) while others were new in grass carp, especially those tri-nucleotide repeats (i.e. TTA and GGA). Six microsatellite loci in grass carp, i.e. MFW1-1, MFW1-2, MFW5, MFW15, Koi3 and Koi20, were applied to subsequent studies on genetic diversity and possible population structure of grass carp samples from the Yangtze River System including river and its major adjacent lakes. The results showed that the number of alleles of a population ranged from 3.8 to 4.8 on average, and mean observed heterozygosity (Ho) from 0.40 to 0.57, while mean expected heterozygosity (H E) from 0.48 to 0.65. After applying Hardy-Weinberg Equilibrium (HWE) test, several loci were found to be significantly deviated from HWE in some populations in which deficiency of heterozygotes was apparent. Genetic distance analysis showed that the largest distance was between Sichuan and Dongting Lake population and the smallest distance was between Jiayu and Poyang Lake population. However, the analysis of molecular variance (AMOVA) indicated that almost majority of the variance in the grass carp was within populations (95.60%), and only small proportion was among populations (4.40%). The lower level of overall genetic diversity and particularly lower Fixation Index (Fst=0.044) indicated that the grass carp in Yangtze River system had a relatively lower genetic variation and its genetic structure between populations was weak.
  • [1]

    Li S F, Lu G Q, Bernatchez L. Diversity of mitochondrial DNA in the populations of silver carp, bighead carp, grass carp and black carp in the middle and lower reaches of the Yangtze River[J].Acta Zool. Sin., 1998,44(1):82-93[李思发,吕国庆,贝纳切兹.长江中下游鲢鳙草青四大家鱼线粒体DNA多样性分析.动物学报,1998,44(1):82-93]

    [2]

    Wu L, Xiong Q. Biochemical genetic structure and variation in a natural population of grass carp from the middle reaches of Yangtze River[J].Acta Genet. Sin., 1992,19(3):221-227[吴力钊,熊全沫.长江中游草鱼天然种群的生化遗传结构及变异.遗传学报,1992,19(3):221-227]

    [3]

    Zhao J L, Li S F. Isoenzyme analysis of population divergence of silver carp, bighead carp, grass carp and black carp in the middle and lower stream of Changjiang River[J]. J. Fish. China, 1996, 20:104-109[赵金良,李思发.长江中下游鲢、鳙、青鱼、草鱼种群分化的同工酶分析[J].水产学报,1996, 20:104-109]

    [4]

    Zhang S M, Deng H, Wang D Q,et al. Population structure and genetic biodiversity of silver carp and grass carp from populations of Yangtze River Systems revealed by RAPD[J]. Acta Hydrobiol. Sin., 2001,25(4):324-330[张四明,邓怀,汪登强,等.长江水系鲢和草鱼遗传结构及变异性的RAPD研究.水生生物学报,2001,25(4):324-330]

    [5]

    Zhang S M, Wang D Q, Deng H,et al. Mitochondrial DNA variations of silver carp and grass carp in populations of the middle reaches of the Yangtze River by using RFLP-PCR[J]. Acta Hydrobiol. Sin., 2002,26(2): 142-147[张四明,汪登强,邓怀,等.长江中游水系鲢和草鱼群体mtDNA遗传变异的研究.水生生物学报,2002,26(2): 142-147]

    [6]

    Tautz D, Renz M. Simple sequences are ubiquitous repetitive components of eukaryotic genomes[J]. Nucleic Acids Res., 1984,12:4127-4138

    [7]

    Tong J, Wang Z, Yu X,et al. Cross-species amplification in silver carp and bighead carp with microsatellite primers of common carp[J]. Mol. Ecol. Notes, 2002,2:245-247

    [8]

    Crooijmans R P M A, Bierbooms V A F, Komen J,et al. Microsatellite markers in common carp (Cyprinus carpio L.)[J]. Anim. Genet., 1997,28:129-134

    [9]

    David L, Rajasekaran P, Fang J,et al. Polymorphism in ornamental and common carp strains (Cyprinus carpio L.) as revealed by AFLP analysis and a new set of microsatellite markers[J]. Mol. Genet. Genomics, 2001,266:353-362

    [10]

    Sambrook J, Fritsch E F, Maniatis T. Molecular cloning: a laboratory manual[M]. New York: Cold Spring Harbor Laboratory Press, 1989

    [11]

    Schneider S, Roessli D, Excoffier L. Arlequin ver. 2.000: A software for population genetics data analysis, Genetics and biometry laboratory, University of Geneva, Switzerland, 2000

    [12]

    Nei M, Li W H. Mathematical model for studying genetic variation in terms of restriction endonucleases [J]. Proc. Natl. Acad Sci. USA, 1979,76:5269-5273

    [13]

    Excoffier L, Smouse P E, Quattro J M. Analysis of molecular variance inferred from metric distances among DNA haplotypes: application to human mitochondrial DNA restriction data[J].Genetics, 1992, 131:479-491

    [14]

    Reynolds J, Weirs B S, Cockerham C C. Estimation for the coancestry coefficient: basis for a short-term genetic distance[J]. Genetics, 1983, 105:767-779

    [15]

    Kumar S, Tamura K, Jakobsen I B,et al. MEGA 2: Molecular evolutionary genetics analysis software, Arizona State University, Tempe, Arizona, 2001

    [16]

    Raymond M, Rousset F. An exact test for population differentiation[J]. Evolution, 1995,49:1280-1283

    [17]

    Van de Peer Y, Taylor J S, Meyer A. Are all fishes ancient polyploids? [J]. J. Struct. Funct. Genomics, 2003, 2:65-73

    [18]

    Tong J, Yu X, Liao X. Characterization of a highly conserved microsatellite marker with utility potentials in cyprinid fishes[J]. J. Appl. Ichthyol., 2005(in press)

    [19]

    David L, Blum S, Feldman M W et al. Recent duplication of the common carp (Cyprinus carpio L.) genome as revealed by analyses of microsatellite Loci[J]. Mol. Biol. Evol.,2003,20(9): 1425-1434

    [20]

    Nei M, Marayuma T, Chakraborty R. The bottleneck effect and genetic variability in populations[J]. Evolution, 1975,29:1-10

    [21]

    DeWoody J A, Avise J C. Microsatellite variation in marine, freshwater and anadromous fishes compared with other animals[J]. J. Fish Biol., 2000,56:461-473

    [22]

    Luikart G, Sherwin W B, Steele B M,et al. Usefulness of molecular markers for detecting population bottlenecks via monitoring genetic change[J]. Mol. Ecol., 1998, 7:963-974

    [23]

    Balloux F, Lugon-Moulin N. The estimation of population differentiation with microsatellite markers[J]. Mol. Ecol., 2002,11:155-165

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出版历程
  • 收稿日期:  2003-12-10
  • 修回日期:  2004-11-19
  • 发布日期:  2005-03-24

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