We analyzed the two hypervariable segments HVS-I and HVS-II of 108 Chinese Tu ethnic minority group samples for forensic and population genetics purposes, Comparing with Anderson sequence, 79 polymorphic loci in HVS-I...We analyzed the two hypervariable segments HVS-I and HVS-II of 108 Chinese Tu ethnic minority group samples for forensic and population genetics purposes, Comparing with Anderson sequence, 79 polymorphic loci in HVS-I and 40 in HVS-II were found in Chinese Tu ethnic minority group mtDNA sequences, and 90 and 64 haplotypes were then defined. Haplotype diversity and the mean pairwise differences were 0.9903±0.0013 and 5.7785 in HVS-I, and 0.9777±0.0013 and 3.5819 in HVS-II, respectively. By analyzing the hypervariable domain from nucleotide 1,6180 to 1,6193 in HVS-I, we defined some new types of sequence variations. We also compared the relationship between Tu population and other populations using mtDNA HVS-I sequences. According to Rst genetic distances, the phylogenetic tree showed that the Tu population, the Xi＇an Han population, the Chinese Korean, and the Mongol ethnic group were in a clade. This indicated a close genetic relationship between them. There were far relations between the Tu population and other Chinese southern Han populations, Siberian, European, African, and other foreign populations. The results suggest that Tu population has a multi-origin and has also merged with other local populations.展开更多
目的初步探究青海土族人群中牙周病可疑致病微生物的组成差异和种群结构。方法选择青海省土族居民牙周病样本10例,利用Illumina Mi Seq平台进行细菌16S r RNA基因(V3-V4区)高通量测序,并利用Mothur软件分析微生物的群落结构和多样性。...目的初步探究青海土族人群中牙周病可疑致病微生物的组成差异和种群结构。方法选择青海省土族居民牙周病样本10例,利用Illumina Mi Seq平台进行细菌16S r RNA基因(V3-V4区)高通量测序,并利用Mothur软件分析微生物的群落结构和多样性。结果基于97%的相似性类聚,获得牙周病组物种注释OTU(Operational taxonomic unit)数目为156个,分类地位明确的细菌属有48个。土族牙周病患者中检出的已知致病微生物种属主要包括消化链球菌属Peptostreptococcus、微单胞菌属Parvimonas、卟啉单胞菌属Porphyromonas、普雷沃菌属Prevotella、拟杆菌属Bacteroides、密螺旋体属Treponema和小类杆菌属Dialister,以及可疑的致病微生物属肠杆菌科未知属Enterobacteriaceae unclassified、希瓦氏菌属Shewanella、克雷伯氏菌Klebsiella、奈瑟氏菌属Neisseria、嗜血杆菌属Haemophilus、乳球菌属Lactococcus、明串珠菌属Leuconostoc、韦荣球菌属Veillonella、普罗维登斯菌属Providencia等。结论青海土族人群中牙周病可疑致病微生物的组成差异较大、种群结构复杂。展开更多
文摘We analyzed the two hypervariable segments HVS-I and HVS-II of 108 Chinese Tu ethnic minority group samples for forensic and population genetics purposes, Comparing with Anderson sequence, 79 polymorphic loci in HVS-I and 40 in HVS-II were found in Chinese Tu ethnic minority group mtDNA sequences, and 90 and 64 haplotypes were then defined. Haplotype diversity and the mean pairwise differences were 0.9903±0.0013 and 5.7785 in HVS-I, and 0.9777±0.0013 and 3.5819 in HVS-II, respectively. By analyzing the hypervariable domain from nucleotide 1,6180 to 1,6193 in HVS-I, we defined some new types of sequence variations. We also compared the relationship between Tu population and other populations using mtDNA HVS-I sequences. According to Rst genetic distances, the phylogenetic tree showed that the Tu population, the Xi＇an Han population, the Chinese Korean, and the Mongol ethnic group were in a clade. This indicated a close genetic relationship between them. There were far relations between the Tu population and other Chinese southern Han populations, Siberian, European, African, and other foreign populations. The results suggest that Tu population has a multi-origin and has also merged with other local populations.
文摘目的初步探究青海土族人群中牙周病可疑致病微生物的组成差异和种群结构。方法选择青海省土族居民牙周病样本10例,利用Illumina Mi Seq平台进行细菌16S r RNA基因(V3-V4区)高通量测序,并利用Mothur软件分析微生物的群落结构和多样性。结果基于97%的相似性类聚,获得牙周病组物种注释OTU(Operational taxonomic unit)数目为156个,分类地位明确的细菌属有48个。土族牙周病患者中检出的已知致病微生物种属主要包括消化链球菌属Peptostreptococcus、微单胞菌属Parvimonas、卟啉单胞菌属Porphyromonas、普雷沃菌属Prevotella、拟杆菌属Bacteroides、密螺旋体属Treponema和小类杆菌属Dialister,以及可疑的致病微生物属肠杆菌科未知属Enterobacteriaceae unclassified、希瓦氏菌属Shewanella、克雷伯氏菌Klebsiella、奈瑟氏菌属Neisseria、嗜血杆菌属Haemophilus、乳球菌属Lactococcus、明串珠菌属Leuconostoc、韦荣球菌属Veillonella、普罗维登斯菌属Providencia等。结论青海土族人群中牙周病可疑致病微生物的组成差异较大、种群结构复杂。
