Deltaproteobacteria Kuever et al. 2006
General information
Description and emendation
The class is defined solely based on sequence similarity of 16S rRNA. It comprises several bacterial groups that had been previously treated as separate systematic assemblages according to phenotypic characteristics. 16S rRNA sequence analyses are not only informative for the definition of orders and families within the Deltaproteobacteria. This method is usually also relevant for the establishment of genera and sometimes species; nevertheless, phenotypic features such as nutritional characteristics or chemotaxonomic properties may be equally important at the genus level, and, in combination with DNA-DNA hybridization, at the species level. The class Deltaproteobacteria comprises morphologically diverse, Gram-negative, nonsporeforming bacteria that exhibit either anaerobic or aerobic growth. Members with facultatively anaerobic/aerobic growth are not known so far. Most anaerobic members can use inorganic electron acceptors that allow energy conservation by anaerobic respiration. By performing such reactions, these bacteria play a major role in the global cycling of elements. Utilization of inorganic electron acceptors is an important physiological and taxonomic characteristic. However, in a number of isolates the reduction of some electron acceptors (e.g., sulfur, ferric iron) may not be associated with growth (as in the case of oxygen reduction). Therefore, the utilization of an electron acceptor (especially in sulfate-reducing bacteria) must be confirmed by definite growth in subcultures. This has not been proven in every case. Some anaerobic members are fermentative and/or exhibit syntrophic growth by proton reduction and inter-species hydrogen transfer. One striking feature of the aerobic representatives is the ability to digest other bacteria. Several of these members are important constituents of the micro flora in soil and waters. Orders Desulfurellales, Desulfovibrionales, Desulfobacterales, Desulfarcales, Desulfuromonales, Syntrophobacterales. Orders Myxococcales and Bdellovibrionales are exclusively aerobic.
1: The description of the class Deltaproteobacteria remains as given by Kuever et al., with the exception that the order Bdellovibrionales with its current taxa 'Bdellovibrionaceae', Bacteriovoracaceae, Halobacteriovoraceae and Pseudobacteriovoracaceae are excluded from the classis.
Subdivision(s)
MID | Name | Rank | Taxon ID |
---|---|---|---|
MSG073142 | 'Candidatus Acididesulfobacter bacterium' | Species | |
MSG073354 | 'Candidatus Acididesulfobacter diazotrophicus' | Species | |
MSG073355 | 'Candidatus Acididesulfobacter guangdongensis' | Species | |
MSG073421 | 'Candidatus Acididesulfobacter sp.' | Species | |
MSG073186 | 'Candidatus Acidulodesulfobacterales bacterium' | Species | |
MSG073141 | 'Candidatus Acidulodesulfobacterium bacterium' | Species | |
MSG073395 | 'Candidatus Acidulodesulfobacterium sp.' | Species | |
MSG071672 | 'Candidatus Deltaproteobacteria Cadiz_LYX10' | Species | |
MSG071673 | 'Candidatus Deltaproteobacteria Cadiz_LYX103' | Species | |
MSG071674 | 'Candidatus Deltaproteobacteria Cadiz_LYX73' | Species | |
MSG084093 | 'Deltaproteobacteria bacterium ' | Species | |
MSG075154 | 'Deltaproteobacteria bacterium' | Species | |
MSG100014 | 'Deltaproteobacteria sp.' | Species | |
MSG073092 | 'Deltaproteobacterium bacterium' | Species | |
MSG071972 | 'Desulfobulbales bacterium' | Species | |
M02250401 | Bradymonadales | Order | 1779134 |
M022504000001 | Deferrisoma | Genus | 1125862 |
M02250402 | Desulfarculales | Order | 453227 |
M02250403 | Desulfobacterales | Order | 213118 |
M02250404 | Desulfovibrionales | Order | 213115 |
M02250405 | Desulfurellales | Order | 213113 |
M02250406 | Desulfuromonadales | Order | 69541 |
M022504000002 | Dissulfuribacter | Genus | 1433998 |
M022504000003 | Dissulfurimicrobium | Genus | 1769732 |
M022504000004 | Dissulfurirhabdus | Genus | 1840207 |
M02250407 | Myxococcales | Order | 29 |
M02250408 | Syntrophobacterales | Order | 213462 |