Xanthomonadaceae
The division of living beings into systematics is a continuous subject of research. Different systematic classifications exist side by side and one after the other. The taxon treated here has become obsolete due to new research or is not part of the group systematics presented in the German-language Wikipedia.
The Xanthomonadaceae were a family of the Proteobacteria and formed the order Xanthomonadales . These are gram-negative bacteria that can only live in the presence of oxygen (obligate aereobic ).
features
The cells are rod-shaped. Some species are flagellated with polar polarity , others move gliding. Immobile bacteria are also represented in the family. Persistent organs such as spores are not formed. There are oxidase -positive as well as negative oxidase species present, the catalase test, however, is negative for all species. Many species form conspicuous pigments , so colonies of Xanthomonas are often colored yellow by special pigments such as Xanthomonadine , bromine-containing polyenes .
ecology
Xanthomonadaceae are widespread and colonize a wide variety of habitats. Species of the genus Lysobacter occur in soil and fresh water. Nevskia occurs preferentially on the surface of water and forms flat rosettes from branched, slimy stems.
Many species, especially those from the genus Xanthomonas, are pathogenic to plants ; some can also be dangerous for humans. The genus Stenotrophomonas is common in hospitals and can be involved in nosocomial infections . Xylella fastidiosa occurs in plant tissue, especially in the xylem, and can be plant pathogenic. It is the cause of Pierce's Disease in wine and other plant diseases.
Systematics
Within the LPSN ( List of Prokaryotic names with Standing in Nomenclature ), an important listing of the bacterial systematics, the order Xanthomonadales is no longer listed. This order and the only delivered family Xanthomonadaceae have been dissolved due to recent investigations. Many of the genera are now assigned to the order Lysobacterales , others are not yet assigned to any special order. However, the old system is still in use and is still used, for example, in NCBI ( National Center for Biotechnology Information ), another important source for the systematics of bacteria.
A selection of the genres:
- Aquimonas Saha et al. 2005
- Arenimonas Kwon et al. 2007
- Dokdonella Yoon, et al. 2006
- Dyella Xie and Yokota 2005
- Frateuria Swings et al. 1980
- Fulvimonas Mergaert, et al. 2002
- Ignatzschineria Toth et al. 2007
- Luteibacter Johansen et al. 2005
- Luteimonas Finkmann et al. 2000
- Lysobacter Christensen & Cook 1978
- Pseudoxanthomonas Finkmann et al. 2000
- Rhodanobacter Nalin et al. 1999
- Silanimonas Lee et al. 2005
- Stenotrophomonas Palleroni & Bradbury 1993
- Thermomonas Busse et al. 2002
- Xanthomonas Dowson 1939
- Xylella Wells et al. 1987
swell
- ^ A b c Jean Euzéby, Aidan C. Parte: Lysobacterales. In: List of Prokaryotic names with Standing in Nomenclature ( LPSN ). Retrieved December 2, 2018 .
- ^ BJ Tindall: The family name Solimonadaceae Losey et al. 2013 is illegitimate, proposals to create the names 'Sinobacter soli' comb. nov. and 'Sinobacter variicoloris' contravene the Code, the family name Xanthomonadaceae Saddler and Bradbury 2005 and the order name Xanthomonadales Saddler and Bradbury 2005 are illegitimate and notes on the application of the family names Solibacteraceae Zhou et al. 2008, Nevskiaceae Henrici and Johnson 1935 (Approved Lists 1980) and Lysobacteraceae Christensen and Cook 1978 (Approved Lists 1980) and order name Lysobacteriales Christensen and Cook 1978 (Approved Lists 1980) with respect to the classification of the corresponding type genera Solibacter Zhou et al . 2008, Nevskia Famintzin 1892 (Approved Lists 1980) and Lysobacter Christensen and Cook 1978 (Approved Lists 1980) and importance of accurately expressing the link between a taxonomic name, its authors and the corresponding description / circumscription / emendation In: International Journal of Systematic and Evolutionary Microbiology (IJSB) Volume 64, pp. 293-297 . DOI: 10.1099 / ijs.0.057158-0
literature
- George M. Garrity (Ed.): Bergey's Manual of Systematic Bacteriology . 2nd edition, Volume 2: The Proteobacteria. Part B: The Gammaproteobacteria. Springer, New York 2005, ISBN 0-387-95040-0 .
- Michael T. Madigan, John M. Martinko, Jack Parker: Brock - Microbiology . 11th edition, Pearson Studium, Munich 2006, ISBN 3-8274-0566-1 .
- Heribert Cypionka : Fundamentals of Microbiology. 3rd edition, Springer, Heidelberg 2006, ISBN 3-540-24084-5 (introductory textbook).
