Title |
Fuzzy species among recombinogenic bacteria
|
---|---|
Published in |
BMC Biology, March 2005
|
DOI | 10.1186/1741-7007-3-6 |
Pubmed ID | |
Authors |
William P Hanage, Christophe Fraser, Brian G Spratt |
Abstract |
It is a matter of ongoing debate whether a universal species concept is possible for bacteria. Indeed, it is not clear whether closely related isolates of bacteria typically form discrete genotypic clusters that can be assigned as species. The most challenging test of whether species can be clearly delineated is provided by analysis of large populations of closely-related, highly recombinogenic, bacteria that colonise the same body site. We have used concatenated sequences of seven house-keeping loci from 770 strains of 11 named Neisseria species, and phylogenetic trees, to investigate whether genotypic clusters can be resolved among these recombinogenic bacteria and, if so, the extent to which they correspond to named species. |
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Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 8 | 3% |
United Kingdom | 8 | 3% |
Germany | 6 | 2% |
Spain | 3 | 1% |
Switzerland | 2 | <1% |
Portugal | 2 | <1% |
Mexico | 2 | <1% |
Canada | 1 | <1% |
Hungary | 1 | <1% |
Other | 5 | 2% |
Unknown | 208 | 85% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 65 | 26% |
Researcher | 56 | 23% |
Professor | 21 | 9% |
Student > Master | 16 | 7% |
Student > Bachelor | 16 | 7% |
Other | 44 | 18% |
Unknown | 28 | 11% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 139 | 57% |
Biochemistry, Genetics and Molecular Biology | 25 | 10% |
Immunology and Microbiology | 15 | 6% |
Medicine and Dentistry | 12 | 5% |
Computer Science | 5 | 2% |
Other | 14 | 6% |
Unknown | 36 | 15% |