Revisiting bacterial phylogeny
نویسندگان
چکیده
منابع مشابه
Revisiting bacterial phylogeny
Current methods used for phylogenetic classification of prokaryotes largely rely on the sequences of 16S rRNA genes that are ubiquitously present in the cell. Theoretical basis of this methodology is based on the assumption that 16S rRNA genes are only vertically inherited and are thus indigenous to each species. However, microbial genomic analysis has revealed the existence of prokaryotic spec...
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The endosymbiont Wolbachia has been detected in a few parthenogenetic collembolans sampled in Europe and America, including three species of Poduromorpha, two species of Entomobryomorpha, and two species of Neelipleona. Based on 16S rRNA and ftsZ gene sequences, most of the Wolbachia infecting parthenogenetic collembolans were characterized as members of supergroup E and showed concordant phylo...
متن کاملCritical issues in bacterial phylogeny.
To understand bacterial phylogeny, it is essential that the following two critical issues be resolved: (i) development of well-defined (molecular) criteria for identifying the main groups within Bacteria, and (ii) to understand how the different main groups are related to each other and how they branched off from a common ancestor. These issues are not resolved at present. We have recently desc...
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The phylogenetic relationships of deep metazoans, specifically in the phylum Ctenophora, are not totally understood. Previous studies have been developed on this subject, mostly based on morphology and single gene analyses (rRNA sequences). Several loci (protein coding and ribosomal RNA) from taxa belonging to this phylum are currently available on public databases (e.g. GenBank). Here we revis...
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Many models of genome rearrangement involve operations (e.g. inversions and translocations) that are self-inverse, and hence generate a group acting on the space of genomes. This gives a correspondence between genome arrangements and the elements of a group, and consequently, between evolutionary paths and walks on the Cayley graph. Many common methods for phylogeny reconstruction rely on calcu...
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ژورنال
عنوان ژورنال: Mobile Genetic Elements
سال: 2013
ISSN: 2159-256X
DOI: 10.4161/mge.24210