Study on the SNP of UCP1 Gene Exon 2 in Rabbit     

LI Wei  LIU Ruo-yu  LIN Jia-dong  XIE Hai-qiang  LI Si  DU Xue-qin  XIAO Chao-neng 《中国畜牧兽医》2015,42(8):2131-2136

In order to deeply understand the meat quality and provide the basic information and scientific proof for better heredity selection of rabbit.This experiment option New Zealand rabbit and Californian rabbit were used to construct own DNA pools, respectively for complete sequences amplification of exon 2 and part of intron 1 region of UCP1 gene, two-way sequencing the amplification of the product, BLAST and DNAStar analysis and determine the SNP of rabbit UCP1 gene.The results showed that six SNPs were found in UCP1 gene of the New Zealand rabbit:T135C, C232T, T332C, C360T, T550C and A560G, two synonymous mutation (T135C and C232T) and the other SNPs located in intron region respectively.Using RNA online prediction software forecast UCP1 gene RNA secondary structure prediction software minimum free energy changed from -917.51 kJ/mol to -866.10 kJ/mol for the polymorphisms led to the changes of RNA secondary structure.  相似文献   

连锁不平衡的研究与应用   总被引：1，自引：0，他引：1  

江玉梅  杨桂玲 《江西植保》2004,27(2):61-63

早在20世纪初期，Jinnings就提出了连锁不平衡(Linkage disequilibrium，LD)的概念。近年来随着单核苷酸多态性(Single nucleotide polymorphisms，SNPs)及其单倍型(Haplotypes)研究的兴起，LD也日益成为人们研究的热点。本文借助SNPs和单倍型两种方法来论述LD的研究，并简要介绍了LD研究与关联分析的关系。  相似文献   

白鹅脂联素基因内含子多态性检测及群体遗传分析     

董飚  段修军  王健  龚道清  孙国波 《安徽农业大学学报》2012,39(1):50-54

以扬州鹅、四川白鹅、皖西白鹅、豁眼鹅和浙东白鹅5个鹅品种为试验材料,每个品种各60只,公母各半,根据鹅脂联素基因序列设计了1对引物扩增部分内含子,用PCR-SSCP方法进行单核苷酸多态性分析,并对不同品种进行群体遗传学分析。结果表明,在鹅脂联素基因内含子上发现2个单碱基突变位点,分别为第16、26位点的A-G、T-C。鹅群中表现出3种基因型(AA、AB、BB);除豁眼鹅与皖西白鹅、浙东白鹅外,3种基因型在鹅品种两两之间分布无显著差异(P0.05)。群体遗传分析表明,豁眼鹅杂合度和多态信息含量最高,皖西白鹅最低,所有品种均表现为中度多态性。本研究表明鹅脂联素基因在不同品种中具有丰富的单核苷酸多态性,可以进一步作为候选基因来分析其与脂肪性状的关联性。  相似文献   

影响鸡肌内脂肪的重要候选基因研究进展     

杨芬霞  李乃宾  杜炳旺  张丽 《广东农业科学》2014,41(4):166-169

心脏型脂肪酸结合蛋白（Heart fatty acid binding acid, H-FABP）、脂肪型脂肪酸结合蛋白（Adipocyte fatty acid binding protein, A-FABP）和细胞外脂肪酸结合蛋白（Extracellular fatty acid binding protein, Ex-FABP）对鸡肌内 脂肪性状的影响越来越引起研究者的关注。在总结、回顾近年来鸡肌内脂肪性状研究进展的基础上,从H-FABP、AFABP 、Ex-FABP 基因功能、基因单核苷酸多态性以及两基因聚合基因型效应等方面,详细介绍和阐述了其与肌内脂 肪含量的关系,并提出未来鸡肌内脂肪性状的3 个重要候选基因研究需要解决的问题,对鸡肌内脂肪性状的3 个重 要候选基因的研究进行综述,为优质鸡的遗传育种工作提供新的思路和突破口。  相似文献   

猪IGF-I基因SNP位点与生长性能的相关分析     

李小楷  卓清  蓝艳梅  黄焕然  陈宝剑  蒋钦杨  杨秀荣  郭亚芬 《广西农业科学》2014,45(8):1466-1469

【目的】分析猪胰岛素样生长因子I（IGF-I）基因SNP位点与生长性能的相关性,为后期猪的品种选育提供理论依据。【方法】采用PCR-RFLP对长白猪、环江香猪、广西巴马小型猪及长×巴F1代、F2代杂交猪的IGF-I基因SNP位点（rs322131043）进行分型,统计不同猪种该位点的基因型频率和等位基因频率,并分析长×巴F2代杂交猪的基因型频率与其生长性能的相关性。【结果】IGF-I基因SNP位点在广西巴马小型猪中以AA型为优势基因型,长白猪中以GG为优势基因型,其中A基因频率在广西巴马小型猪、环江香猪、长白猪3个品种中依次降低。不同基因型的长×巴F2代杂交猪中,基因杂合（AG）型猪的体重、体长、胸围、体高平均值在各日龄基本上都比基因纯合（AA/GG）型的低。【结论】猪IGF-I基因SNP位点与其生长性能密切相关,但该位点是否可应用于品种选育仍需进一步验证。  相似文献   

The Mining of Citrus EST-SNP and Its Application in Cultivar Discrimination   总被引：2，自引：0，他引：2  

JIANG Dong  YE Qing-liang  WANG Fu-sheng  CAO Li 《中国农业科学(英文版)》2010,9(2):179-190

Single nucleotide polymorphisms （SNPs） are the most abundant sequence variations found in plant genomes and are widely used as molecular genetic markers in cultivar identification and genetic diversity studies. The objective of this study was to identify SNP markers useful for discrimination of citrus cultivars, since large numbers of expressed sequence tags （ESTs） of sweet orange are available from the National Center for Biotechnology Information （NCBI）. We now have the opportunity to discover SNP markers suitable for determining the haplotypes with which to distinguish very closely related cultivars and to assess genetic diversity within or between related species of citrus. SNPs and small insertions/deletions （Indels） from ESTs of sweet orange and satsuma were identified by the in silico SNP discovery strategy. 55 296 EST sequences of sweet orange and 2 575 of satsuma retrieved from the NCBI repository were mined for potential SNPs. Cleaved amplified polymorphic sequences （CAPS） and sequencing approaches were used to validate putative SNPs in a sample of 30 citrus accessions. A total of 3 348 putative SNPs were identified based on the abundance of sequences and haplotype cosegregation. Of these 3 348 SNPs, the transitions, transversions and Indels ratios were 47.9, 36.1 and 16.0%, respectively. The SNPs occurred on average at a frequency of 1 per 164 bp in the coding region of citrus. 14 SNPs were randomly selected and genotyped according to 30 citrus accessions including 23 accessions of sweet orange; 11 SNPs displayed polymorphism with an average polymorphism information content （PIC） of 0.20 among 30 citrus accessions. The genetic diversity present in sweet orange was low, so the 14 SNP markers failed to discriminate different cultivars of sweet orange, but they did succeed in distinguishing accessions of inter-species of citrus. In this study, SNPs were mined from EST sequences of sweet orange and satsuma, which displayed potential capability as molecular markers to discriminate inter-species accessions of citrus. It is anticipated that these putative SNPs could be applied in citrus genetics research and breeding.  相似文献   

The development of the 2, 4-dienoyl CoA reductase 1 gene （DECR 1） in pig     

WANG Wentao YANG Xiuqin HE Xinmiao LIU Di 《东北农业大学学报(英文版)》2007,14(3):241-244

2,4-dienoyl CoA reductase gene(DECR 1)is mapped on pig 4 q 1.2,includes ten exons and nine introns of variable size that span 30 kb.DECR 1 gene participates in theβ-oxidation pathway,affects the content of intramuscular fatty acid,especially the percentage of linoleic acid.The expression of DECR 1 gene has important influence on IMF,the pH,and the meat colour of pork, further affects the meat quality.  相似文献   

3品种鹅Myostatin基因3''''-调控区SNPs群体遗传学分析     

杨凤萍  陈义权  李世平  李其松  王金玉 《畜牧兽医学报》2007,38(5):442-446

利用已测得的鹅Myostatin基因3'-调控区核苷酸序列设计5对PCR-SSCP引物,对扬州鹅、皖西白鹅以及五龙鹅3品种家鹅该区域内单核苷酸多态性进行了分析,并探索了单核苷酸多态性与生产性能之间的关系.结果表明,检测到A→G(88位)和G→T(353位)2个单碱基突变位点.88位处,E等位基因为优势等位基因,具有EE、EF两种基因型,以扬州鹅杂合子频率最高(0.550),皖西白鹅30个个体仅有一例EF型;353位处,G为优势等位基因,具有GG、GH和HH 3种基因型,3品种均具有较高的GG基因型频率、较低的HH基因型频率.屠体性能分析发现,EF基因型家鹅具有更高的屠体性能;扬州鹅、皖西白鹅GG型个体的腿肌重和腿肌率显著高于HH型个体(P＜0.05),五龙鹅腿肌重、腿肌率具有GG型＞GH型＞HH型的趋势,但差异不显著(P＞0.05).  相似文献   

鹅生长激素基因内含子2单核苷酸多态性与体重性状的相关研究   总被引：9，自引：1，他引：9  

敖金霞  李辉  王启贵  王宇祥 《中国畜牧杂志》2006,42(7):9-11,53

本文以莱茵鹅为实验材料,根据鹅生长激素(GH)基因CDS序列设计引物进行PCR扩增,获得了鹅GH基因内含子2序列,并对扩增产物进行SSCP分析。结果表明:第441位碱基发生了C-A突变;第449位碱基发生了T-C突变。经最小二乘分析,这两个多态性位点所产生的6种基因型的个体间体重差异极显著(P<0.01),BB基因型个体体重显著高于其他基因型个体。这提示我们可以利用该多态位点对鹅体重性状进行标记辅助选择。  相似文献   

SNPs Screening and Bioinformatics Analysis of SIM1 Gene in Congjiang Pigs     

LI Jun  ZHANG Yong  YANG Hong  ZHANG Xiong 《中国畜牧兽医》2015,42(9):2224-2232

In this study, Congjiang pig was served as a research object, crossbred pigs (Congjiang pig×boar), outside crossbred pigs (Duroc×Landrace×Yorkshire) as controls.Using DNA pools and direct sequencing detected polymorphism of 7 exons, part of introns and 3'untranslated region (3'-UTR) sequences of SIM1 gene for three groups.Bioinformatics software predicted what impact polymorphic loci had to mRNA secondary structure and protein primary, secondary structure of SIM1 gene.The results showed that 12 SNPs were screened in SIM1 gene of three groups, C77T located in exon 5, T29186C and A29195C located in intron 9, C63T and C225T located in exon 10, and C107T, A426G, T583C, A586C, A605C and A615C located in exon 11, G267T located in 3'-UTR. C77T, T29186C, A29195C, C63T, C225T, C107T and G267T were silent mutations, A426G, T583C, A586C, A605C and A615C were missense mutations.The five missense mutations respectively led to isoleucine (Ile) into valine (Val), leucine (Leu) into proline (Pro), glutamate (Glu) into alanine (Ala), glutamic (Glu) into aspartic (Asp), asparagine (Asn) histidine (His), and according to online software forecast, mRNA secondary structure and protein primary, secondary structure of SIM1 gene changed in mutations before and after.  相似文献