牛线粒体D-loop的序列分析及进化关系   总被引：1，自引：0，他引：1  

黄秉周  徐公瑾  金松哲  李宁  金海国 《延边大学农学学报》2004,26(4):233-240,260

牦牛存在两处10bp和7bp的缺失．10个品种的20条D-loop序列中共有18种单倍型，共检测到164个突变位点，346个突变碱基，其中转换突变235个，颠换突变55个，插人和缺失突变56个．基于聚类分析显示本试验所检测的黄牛中除了鲁西黄牛以外都起源于欧洲原牛，鲁西黄牛来源于两个母系，一个是欧洲原牛，另一个是瘤牛型原牛．牦牛与黄牛起源于不同的母系．  相似文献   

瓯江彩鲤线粒体DNA的限制性内切酶分析     

王成辉  李思发  徐志彬  项松平  王剑  段江萍 《上海海洋大学学报》2002,(1):14-18

用 13种限制性内切酶对瓯江彩鲤的线粒体DNA(mtDNA)进行RFLP分析 ,结果表明 :(1)共产生 18种限制性态型 ,其中 5种酶产生限制性片段长度多态性 (RFLPs) ,归结为 5种基因单倍型。 (2 )瓯江彩鲤mtDNA大小为 16 .6 0± 0 .15kb ,单倍型间的基因多样性指数和群体核苷酸多样性指数分别为 0 .75 17、0 .0 2 86 ,遗传多样性较丰富  相似文献   

马铃薯亚细胞结构线粒体DNA的分离与提取   总被引：1，自引：0，他引：1       下载免费PDF全文

卢太白  韦伟  徐雷 《西北农业学报》2006,15(5):155-157

以马铃薯块茎为材料,通过差速离心分离出线粒体,过垫梯度离心进一步纯化。显微镜下观察所得的线粒体的纯度、形态;并用数码相机进行照相。线粒体样用SDS、蛋白酶K、核酸酶处理后用饱和酚、苯酚/氯仿及氯仿/异戊醇提取处理,乙醇沉淀,提取得线粒体DNA(mtDNA)。紫外分光光度计检测提取浓度、纯度,1%琼脂糖电泳获得清晰、整齐的条带。  相似文献   

伏牛白山羊mtDNAD—loop序列多态性和系统进化分析     

李婉涛刘延鑫  赵绪永李新正  王文静权凯 《勤云标准版测试》2007,(3)

为研究河南省伏牛白山羊的遗传多样性和系统进化,试验测定了该品种8个个体的线粒体控制区全序列,结果表明,山羊控制区线粒体控制全序列长度为1212bp或1213bp,A T含量占60.1%,其中40个核苷酸位点存在变异(约占3.30%),核苷酸多样度为1.562%,这些差异共定义了7种单倍型,单倍型多样性为0.964,表明中国山羊品种遗传多样性丰富。根据伏牛白山羊序列和GENBANK两条野山羊序列构建了NJ分子系统树,聚类表明,伏牛白山羊和角骨羊单独聚在一枝上,二者亲缘关系较近,伏牛白山羊可能起源于角骨羊。  相似文献   

烟草雄性不育的分子机理研究进展     

刘齐元  刘飞虎  何宽信  胡日华 《江西农业大学学报》2003,25(4):514-518

综述了烟草雄性不育分子机理研究的最新进展，包括：线粒体DNA与雄性不育；叶绿体DNA与雄性不育；核DNA与雄性不育等研究。  相似文献   

文昌鸡线粒体控制区遗传多态性及系统进化分析   总被引：1，自引：0，他引：1  

章明  贾晓旭  陆俊贤  唐修君  樊艳凤  高玉时 《安徽农业大学学报》2016,43(5):690-693

通过对文昌鸡线粒体基因纽(mitochondrial genome,mtDNA)D-loop区全序列的测序和比对,并结合GenBank已经测出D-loop区全序列的红色原鸡的序列,探讨了文昌鸡的遗传多样性和母系起源。结果发现,文昌鸡mtDNAD-loop区全长1231~1232bp,核苷酸多样性(Pi)为0.09757,单倍型多样性(Hd)为0.874。在30只个体中,共发现20处单核苷酸多态位点,10种单倍型。系统发育分析发现,10种单倍型可以分为B、C和E 3个分支。B分支与红色原鸡滇南亚种(Gallus gallus spadiceus)聚为一类,推测这两个分支可能起源于云南、缅甸附近地区的红色原鸡滇南亚种。E分支与红色原鸡(Gallusgallus murghi)聚为一类,推测可能起源于红色原鸡的印度亚种分支。C分支与4个原鸡亚种聚为一类,可能有多个母系起源。本研究从分子水平上为文昌鸡的遗传资源保护和开发利用提供了参考。  相似文献   

Sequence Analysis of mtDNA COIGene and Molecular Phylogeny of Different Geographical Populations of Bemisia tabaci (Gennadius)     

CHU Dong  ZHANG You-jun  CONG Bin  XU Bao-yun  WU Qing-Jun  ZHU Guo-Ren 《中国农业科学(英文版)》2005,4(7)

Bemisia tabaci(Gennadius) is a serious pest in many cropping systems worldwide and occurs in different biotypes. The mtDNA COI gene of the 12 Bemisia tabaci (Gennadius) populations from different regions and countries were analyzed.Based on mtDNA COI sequences, their biotypes were characterized and phylogenetic relationships among these populations were established with the method of UPGMA. The results indicated the genetic similarity between those populations from Beijing, Zhengzhou, Zaozhuang, Nanjing, Shanghai, Haikou, and the B-biotype populations from California, Texas, Arizona reached 99.8-100%, which meant the nation-wide infested populations of B. tabaci in China in recent years were B-biotypes. Another population collected from Kunming of Yunnan Province showed very high similarity with Q-biotype B. tabaci from Spain and Morocco, which meant the Kunming population was Q-biotype. This is the first report on the invasion of Q-biotype into China.  相似文献   

亚洲部分地区东方蜜蜂mtDNA多态性研究   总被引：1，自引：0，他引：1  

谭垦  张炫  周丹银  和绍禹 《云南农业大学学报(自然科学版)》2004,19(2):227-230

 就云南省7个不同样点共7群东方蜜蜂蜂群开展mtDNA内切酶位点测试和分析研究,并与菲律宾的东方蜜蜂作对比分析。内切酶DraI分析7个蜂群,共发现4个内切酶位点;云南东方蜜蜂mtDNA的tRNAleu-COII基因的序列没有长度多态性,EcoRI内切酶位点共有4个,与菲律宾的吕宋岛的东方蜜蜂属于同一单倍型。另外,对来自尼泊尔、泰国、越南、老挝以及我国北京、云南等地的共13群蜜蜂mtDNA COII基因的420个碱基对进行测序分析,发现13群东方蜜蜂分析的420个碱基序列里,位点变异从0个到5个不等,变异率从0到1.19％. 用邻接法(neighbor-joining)构建的分子系统树可以看出分枝树主要分为两个类群:高纬度或高海拔的蜂群为一个类群,它们主要来自撒营盘（2）（China 4）、丽江(China 7)、北京(1)（China 1）、尼泊尔（Nepal）、北京（2）（China 2）、河口（1）（China 8）和越南（2）（Vietnam 2）。另一个类群的主要来自低纬度或低海拔的蜂群,它们主要来自撒营盘（1）（China 3）、景洪（China 5）、越南（1）（Vietnam 1）、泰国（Thailand）、河口(2) (China 6)和老挝(Laos)。该实验为我国东方蜜蜂资源的保护和开发研究提供了重要的信息和手段。  相似文献   

甘蓝胞质雄性不育系育性相关线粒体DNA片断的克隆及序列分析   总被引：1，自引：0，他引：1  

许忠民  张恩慧  巩振辉  程永安  马青山 《北方园艺》2011,(21):106-110

以甘蓝结球期叶球内叶为试材,利用PCR方法在甘蓝新型胞质雄性不育材料CMS451的线粒体基因组中扩增出与细胞质雄性不育相关的片断,并克隆测序.结果表明:该片断和NCBI发布的Ogura胞质不育系特异片段高度同源,说明CMS451的不育机理与Ogu-CMS相似,也反映了CMS基因的相对保守性.  相似文献   

Classification and Genetic Diversity of Three Hare Species in Xinjiang Based on Mitochondrial DNA     

SHAN Wenjuan  DAI Huiying  ZHANG Yucong 《畜牧兽医学报》1956,51(10):2403-2412

The study aimed to explore the phylogeny and genetic diversity of 3 hare species in Xinjiang by molecular genetics methods, define the relationship and taxonomy status, assess diversity level of Lepus in Xinjiang, and provide the basic data for conservation genetics of hares in Xinjiang and even in China. Three mitochondrial DNA genes, COI, ND4 and 16S rRNA, were used as molecular markers, and the sequences of 3 genes of 57 samples collected from 8 different regions (4 geographic groups) in Xinjiang were determined by PCR amplification and sequencing technology. After the sequences of COI, ND4 and 16S rRNA of each sample were revised and pooled together, data were analyzed with softwares such as MEGA 7, DNAsp 6, Arlequin 3.1 and MrBayes 3.2. A total of 43 haplotypes were detected from the combined sequences of 3 genes of 57 hare samples. Five distinct clades (A-E) and 3 clusters were clearly showed in phylogenetic tree and median-joining network (MJN). Furthermore, the genetic distance between 3 clusters reached the level of species (4.21%-9.09%). However, the genetic distance between hares from northern Xinjiang (Clade E) and those from central Xinjiang (Clade D) were not up to the level of species (≤2.26%) in the third cluster. The haplotype diversity (h) of Lepus yarkandensis, Lepus tibetanus pamirensis and Lepus tolai lehmanni were higher(0.979±0.014, 0.972±0.064 and 0.972±0.064, respectively), while the nucleotide diversity (π) of the L. t. lehmanni and L. t. centrasiaticus were higher (0.033±0.018 and 0.023±0.015, respectively). Based on comprehensive analysis of 3 genes of mitochondrion and reference with published research, it is suggested that hares from southwestern Pamir Plateau of Xinjiang should belong to L. t. pamirensis. Meanwhile,hares distributed in northern and central Xinjiang might be considered as L. t. lehmanni and L. t. centrasiaticus. Moreover, there is abundant genetic diversity in the 3 hare species in Xinjiang, and the obvious phylogeographic pattern is showed.  相似文献