نتایج جستجو برای: phylogenetic dna

تعداد نتایج: 557942  

Journal: :Molecular Phylogenetics and Evolution 2021

Juniper (Juniperus) is an ecologically important conifer genus of the Northern Hemisphere, members which are often foundational tree species arid regions. The serrate leaf margin clade native to topologically variable regions in North America, where hybridization has likely played a prominent role their diversification. Here we use reduced-representation sequencing approach (ddRADseq) generate ...

Journal: :Applied Microbiology and Biotechnology 2021

Genomes of hyperthermophiles are facing a severe challenge due to increased deamination rates cytosine induced by high temperature, which could be counteracted base excision repair mediated uracil DNA glycosylase (UDG) or other pathways. Our previous work has shown that the two UDGs (Tba UDG247 and Tba UDG194) encoded genome hyperthermophilic euryarchaeon Thermococcus barophilus Ch5 can remove ...

Journal: :Systematic biology 2005
David W Weisrock Luke J Harmon Allan Larson

Phylogenetic relationships among salamander families illustrate analytical challenges inherent to inferring phylogenies in which terminal branches are temporally very long relative to internal branches. We present new mitochondrial DNA sequences, approximately 2,100 base pairs from the genes encoding ND1, ND2, COI, and the intervening tRNA genes for 34 species representing all 10 salamander fam...

Journal: :E3S web of conferences 2021

Bamboos are versatile plants with many usages. Indonesia has a high diversity of species and been using them for long time. As multipurpose plants, they vulnerable to over exploration. Much the bamboo land converted into housing or agricultural land. Development conservation need be balanced, protect genetic diversity, in particular. We studied relationship among four genera that mostly found g...

Background and Aim: Salmonella Typhi belongs to the family Enterobacteriaceae, gram-negative bacilli and causes gastrointestinal diseases such as typhoid. This bacterium has a special structure and various genes, including the ompf gene (outer membrane protein). Recent studies have shown the possibility of using ompf in the development of a diagnostic tuberculosis vaccine. Therefore, the aim of...

2015
Mandakini Singla Neha Goyal RC Sobti VL Sharma

To study the phylogenetic relationships of Indian termites (Insecta: Isoptera), mitochondrial DNA sequences of 334 bp of Cytochrome Oxidase subunit I gene of nine species were subjected to MEGA 5.2. Phylogenetic trees were constructed using Neighbor-Joining and Maximum Likelihood methods. The results revealed the phylogenetic status of Indian termites with other species from different geographi...

Abdolvahab Moradi, Alijan Tabarraei, Gholamreza Talei, Zahra Najafimemar,

Background: Torque teno virus (TTV) was the first human Anelloviridae detected in a Japanese patient with an unknown type of hepatitis in 1997. TTV is by far the first known single-stranded circular DNA virus infecting human. In spite of its widespread nature in human population, its pathogenesis is still unclear. In addition, information regarding TTV infection in Iranian population is limited...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Scott V Edwards

I f Darwin were to survey the entirety of the biological sciences today, he would be pleased to observe how central phylogenies and ‘‘tree thinking’’ are to integrative research (1). Biologists of all stripes now realize that phylogenies are not exotic, but fundamental and routine tools for understanding not only history but mechanism, organization, and function of biological networks at all le...

2006
Ryan T. Jones Andrew P. Martin

Comparative analyses of microbial communities increasingly involve the assay of 16S rRNA (or other gene) sequences from environmental DNA. Determining whether the composition of two or more communities differ in their phylogenetic composition involves testing for covariation between phylogeny and community type. This approach requires estimating the phylogenetic relationships among all sampled ...

Journal: :Applied and environmental microbiology 1997
G Jurgens K Lindström A Saano

We report here the results of phylogenetic analysis of archaeal 16S rRNA gene sequences amplified by PCR with Archaea-specific primers with mixed-population DNA extracted directly from forest soil used as a template. Nucleotide signature and phylogenetic analyses show that the sequences obtained belong to the domain Archaea and form a new cluster. Its phylogenetic position suggests that sequenc...

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