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Published on: December 7, 2021
Phylogenetic relationships among Staphylococcus species and refinement of cluster groups based on multilocus data
Ryan P Lamers1, Gowrishankar Muthukrishnan, Todd A Castoe
1Burnett School of Biomedical Sciences, University of Central Florida College of Medicine, 4000 Central Florida Boulevard, Orlando, FL 32816, USA.
BMC Evolutionary Biology
|September 7, 2012
Summary
Phylogenetic analysis of Staphylococcus species using multiple genes and methods reveals a need for revised classification. This study proposes a new classification system for Staphylococcus based on molecular data and phenotypic properties.
Area of Science:
- Microbiology
- Evolutionary Biology
- Bioinformatics
Background:
- Phylogenetic relationships among Staphylococcus species are poorly resolved due to single-gene analyses and limited taxon sampling.
- Existing classification schemes for Staphylococcus lack confidence in evolutionary relationships.
- Multilocus sequence data and advanced phylogenetic methods are needed for robust Staphylococcus phylogeny.
Purpose of the Study:
- To resolve the evolutionary relationships and hierarchical classification of Staphylococcus species.
- To establish a confident phylogenetic framework for Staphylococcus.
- To propose a refined classification for Staphylococcus based on molecular data.
Main Methods:
- Analysis of DNA sequence data from multiple loci (16S rRNA, dnaJ, rpoB, tuf).
- Application of multiple Bayesian and maximum likelihood phylogenetic approaches.
- Incorporation of nearly all recognized Staphylococcus taxa in the analyses.
Main Results:
- Phylogenetic estimates using various methods showed broad agreement on the need for revising current Staphylococcus cluster groups.
- Some disagreement among methods was observed in resolving higher-order relationships.
- A refined classification for Staphylococcus is proposed, with 15 molecularly defined cluster groups adhering to six phenotypically defined species groups.
Conclusions:
- Findings align with previous gene tree-based reports on Staphylococcus phylogeny.
- Multiple previously unreported relationships among Staphylococcus species were identified.
- Multilocus assessments are crucial for robustly inferring microbial relationships, including those of newly discovered lineages.
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