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Res Microbiol. 2010 Jul-Aug;161(6):430-8. doi: 10.1016/j.resmic.2010.05.007. Epub 2010 Jun 1.

Microbial systematics and taxonomy: relevance for a microbial commons.

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Culture Collection University of Gothenburg (CCUG), Department of Clinical Bacteriology, Sahlgrenska University Hospital, PO Box 7193, 402 34 Göteborg, Sweden.


The issues of microbial taxonomy and potential interactions with a microbial commons are discussed, with emphasis on three components: characterization; classification; and nomenclature. The current state of technology and the spectrum of methods that are used for phenotypic and genotypic characterization of prokaryotes, classification at different taxonomic levels and points of prokaryote nomenclature are reviewed. While all taxonomic ranks comprise a cohesive systematic framework for microorganisms, the prokaryotic genus and species provide the "working unit" of taxonomy. Since 2004, the number of validly published genera and species has increased by approximately 50%. Extensive development of technology will continue to enable ever higher resolution characterization and more refined classification of microorganisms. Characterization and classification at the species level may be most relevant for bacterial taxonomy, although reproducible differentiation at the strain level will probably prove to be more relevant for a microbial commons. A dynamic microbial taxonomy, albeit with well-founded and stable guidelines for defining microorganisms, provides an efficient organizational system for dealing with the enormous spectrum of microbial diversity.

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