Legionella
| Legionella | ||||||||
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Legionella pneumophila |
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| Systematics | ||||||||
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| Scientific name | ||||||||
| Legionella | ||||||||
| Garrity et al. 2005 |
Legionellales are an order of Proteobacteria that consists of two families. As with all proteobacteria, they are gram-negative bacteria.
Occurrence
Within the Legionellales, parasites of various unicellular organisms, invertebrates (invertebrates) and insects are represented, some are pathogenic for humans. The respective species are mostly intracellular parasites, i. H. living within host cells. Coxiella burnetii , the causative agent of Q fever (query fever), is obligate intracellularly and cannot reproduce outside of host cells. In Coxiella burnetii, transmission takes place mostly airborne by inhalation. In addition to humans, the species attacks arthropods such as ticks and occurs in animals such as z. B. Dogs or cattle. Outside the host cells, the bacterium takes a dormant position and remains infectious for up to a few months.
The type Legionella pneumophila causes Legionnaires' disease . The Legionella pneumophila bacterium was discovered at a meeting of legionnaires after the occurrence of pneumonia and was named accordingly.
Systematics
The order consists of the following families and genera:
The genera Fluoribacter and Tatlockia are controversial, the name is rarely used. The different representatives are mostly regarded as types of Legionella . The species Sarcobium lyticum was renamed Legionella lytica . The genus Rickettsiella was previously placed with the genus Wolbachia in the group ( tribe ) Wolbachieae of the family Rickettsiaceae .
swell
- ^ Systematics according to Jean Euzéby: List of Prokaryotic Names with Standing in Nomenclature (LPSN). Legionellal order ( Memento of the original dated March 2, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ List of Prokaryotic Names with Standing in Nomenclature (LPSN): Tatlockia ( Memento of the original from June 20, 2008 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. and Fluoribacter ( Memento of the original from May 5, 2008 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
literature
- Köhler, Werner (Ed.) Medical Microbiology , 8th edition, Munich / Jena 2001 ISBN 978-3-437-41640-8
- George M. Garrity et al. (Eds.): Bergey's Manual of Systematic Bacteriology . Vol. 2, Part C: The Gammaproteobacteria . 2nd Edition. Springer-Verlag, New York a. a. O. 2005. ISBN 978-0-387-24144-9
