phylogenetic

Examples of phylogenetic in the following topics:

• Phylogenetic Analysis

  • The molecular approach to microbial phylogenetic analysis revolutionized our thinking about evolution in the microbial world.
  • Microbial phylogenetics is the study of the evolutionary relatedness among various groups of microorganisms.
  • The molecular approach to microbial phylogenetic analysis revolutionized our thinking about evolution in the microbial world.
  • The purpose of phylogenetic analysis is to understand the past evolutionary path of organisms.
  • There are four steps in general phylogenetic analysis of molecular sequences: (i) selection of a suitable molecule or molecules (phylogenetic marker), (ii) acquisition of molecular sequences, (iii) multiple sequence alignment (MSA), and (iv) phylogenetic treeing and evaluation.

• Nucleic Acid Sequencing and rRNA Analysis

  • The 16SrRNA gene is used for phylogenetic studies, as it is highly conserved between different species of bacteria and archaea.
  • Describe how the 16SrRNA gene can be used for phylogenetic studies and in medical microbiology for bacterial identification

• Nonthermophilic Crenarchaeota

  • Halococcus' genome has not been sequenced yet, although studies of its 16s rDNA have demonstrated its placement on the phylogenetic tree.

• Chloroflexus and Relatives

  • Recent phylogenetic analysis of the Chloroflexi has found very weak support for the grouping together of the different classes currently part of the phylum.
  • The six classes that make up the phylum did not consistently form a well-supported monophyletic clade in phylogenetic trees based on concatenated sequences for large datasets of proteins.
  • However, the classes "Chloroflexi" and Thermomicrobia were found to group together consistently by both phylogenetic means and the identification of shared conserved signature indels in the 50S ribosomal protein L19 and the enzyme UDP-glucose 4-epimerase.

• Bacteroidetes and Chlorobi

  • The Phlyum Chlorobi is often grouped with the Phlyum Bacteroidetes because their branches are very close together in the phylogenetic tree.

• Overview of Gram-Positive Bacteria and Actinobacteria

  • Analysis of glutamine synthetase sequence has been suggested for their phylogenetic analysis.

• Actinobacteria (High G + C Gram-Positive Bacteria)

  • Analysis of glutamine synthetase sequence has been suggested for phylogenetic analysis of Actinobacteria.

• Shared Features of Archaea and Eukaryotes

  • Phylogenetic tree showing the relationship between the Archaea and other domains of life.

• Alphaproteobacteria

  • Phylogenetic analyses and conserved indels in large numbers of other proteins provide evidence that Alphaproteobacteria have branched off later than most other phyla and Classes of Bacteria with the exception of Betaproteobacteria and Gammaproteobacteria.

• Shared Features of Bacteria and Archaea

  • In phylogenetic trees based upon different gene/protein sequences of prokaryotic homologs, the archaeal homologs are more closely related to those of Gram-positive bacteria.