This project made use of bioinformatic mining of microsatellites from genomic resources to identify simple sequence repeats(SSRs),or microsatellites.A bioinformatic analysis of 304 nucleotide sequences in Siniperca ch...This project made use of bioinformatic mining of microsatellites from genomic resources to identify simple sequence repeats(SSRs),or microsatellites.A bioinformatic analysis of 304 nucleotide sequences in Siniperca chuatsi GenBank identified 22 sequences containing 30 microsatellites,account for 9.87% of wholly GenBank database.Cluster analysis indicated that 16 dinucleotide pairs were the most abundant microsatellites,accounting for 53.33% of the total microsatellite-containing sequences;11 trinucleotide repeats and 3 tetranucleotide repeats were found in these microsatellite sequences,accounting for 36.66% and 10.01% respective.17 primer pairs were designed from these microsatellite sequences.Among the 17 primer pairs,13 pairs have amplified products,6 pairs can achieve clear PCR products by Electrophoresis.Genotype analysis results indicated that:the average polymorphism information contents(PIC)were 0.692(ranged:0.567-0.806),were all polymorphic loci.展开更多
美国国立生物技术信息中心(NCBI)隶属于美国国立卫生研究院(National Institute of Health,NIH),是国家医学图书馆(National Library of Medicine,NLM)的一个分支机构,负责通过INTERNET等形式为医学、生物学方面的基础研究提供新的信息...美国国立生物技术信息中心(NCBI)隶属于美国国立卫生研究院(National Institute of Health,NIH),是国家医学图书馆(National Library of Medicine,NLM)的一个分支机构,负责通过INTERNET等形式为医学、生物学方面的基础研究提供新的信息。本文主要介绍NCBI网中GENBANK序列数据库的功能及使用方法,如:数据的检索查询,数据递交等;同时还简单介绍了生物医学文献数据库(PreMedline)以及NCBI所能提供的其他服务。NCBI的网址是www.nchi.nlm.nih.展开更多
对遗传背景清晰且具有显著表型差异的海带6个栽培品系(CUL002,CUL860,CUL1170,CUL017,CUL018,CUL901)和长海带(L.longissia)的ITS区进行了PCR扩增和序列测定,并分析了8个种17个品系(其中7种共10株从GenBank中获得)海带之间的系统进化关...对遗传背景清晰且具有显著表型差异的海带6个栽培品系(CUL002,CUL860,CUL1170,CUL017,CUL018,CUL901)和长海带(L.longissia)的ITS区进行了PCR扩增和序列测定,并分析了8个种17个品系(其中7种共10株从GenBank中获得)海带之间的系统进化关系.结果表明:表型各异的6个海带栽培品系ITS区差别很小,其中ITS1+5.8 S rDNA序列完全相同,部分品系间ITS2序列有个别碱基差异;进化树显示与日本海带(L.japonica,AF319018)聚在一起,相似性大于98%,其中CUL901、CUL860和CUL1170的ITS序列完全相同.长海带(L. longissia)的ITS+5.8 S rDNA和日本海带(L.japonica,AF319018)的完全相同.以Undaria peterseniana为外类群,根据ITS+5.8 S rDNA序列构建进化树,6栽培品系及长海带与日本海带聚在一起;17株海带基本构成两个大的进化枝.研究结果揭示了我国海域栽培的长海带可能与日本海带(L.japonica,AF319018)为同一个种.展开更多
文摘This project made use of bioinformatic mining of microsatellites from genomic resources to identify simple sequence repeats(SSRs),or microsatellites.A bioinformatic analysis of 304 nucleotide sequences in Siniperca chuatsi GenBank identified 22 sequences containing 30 microsatellites,account for 9.87% of wholly GenBank database.Cluster analysis indicated that 16 dinucleotide pairs were the most abundant microsatellites,accounting for 53.33% of the total microsatellite-containing sequences;11 trinucleotide repeats and 3 tetranucleotide repeats were found in these microsatellite sequences,accounting for 36.66% and 10.01% respective.17 primer pairs were designed from these microsatellite sequences.Among the 17 primer pairs,13 pairs have amplified products,6 pairs can achieve clear PCR products by Electrophoresis.Genotype analysis results indicated that:the average polymorphism information contents(PIC)were 0.692(ranged:0.567-0.806),were all polymorphic loci.
文摘美国国立生物技术信息中心(NCBI)隶属于美国国立卫生研究院(National Institute of Health,NIH),是国家医学图书馆(National Library of Medicine,NLM)的一个分支机构,负责通过INTERNET等形式为医学、生物学方面的基础研究提供新的信息。本文主要介绍NCBI网中GENBANK序列数据库的功能及使用方法,如:数据的检索查询,数据递交等;同时还简单介绍了生物医学文献数据库(PreMedline)以及NCBI所能提供的其他服务。NCBI的网址是www.nchi.nlm.nih.
文摘对遗传背景清晰且具有显著表型差异的海带6个栽培品系(CUL002,CUL860,CUL1170,CUL017,CUL018,CUL901)和长海带(L.longissia)的ITS区进行了PCR扩增和序列测定,并分析了8个种17个品系(其中7种共10株从GenBank中获得)海带之间的系统进化关系.结果表明:表型各异的6个海带栽培品系ITS区差别很小,其中ITS1+5.8 S rDNA序列完全相同,部分品系间ITS2序列有个别碱基差异;进化树显示与日本海带(L.japonica,AF319018)聚在一起,相似性大于98%,其中CUL901、CUL860和CUL1170的ITS序列完全相同.长海带(L. longissia)的ITS+5.8 S rDNA和日本海带(L.japonica,AF319018)的完全相同.以Undaria peterseniana为外类群,根据ITS+5.8 S rDNA序列构建进化树,6栽培品系及长海带与日本海带聚在一起;17株海带基本构成两个大的进化枝.研究结果揭示了我国海域栽培的长海带可能与日本海带(L.japonica,AF319018)为同一个种.
