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Acidobacteria is a phylum of bacteria. Its members are physiologically diverse and ubiquitous, especially in soils, but are under-represented in culture.
The Rhizobiaceae is a family of proteobacteria comprising multiple subgroups that enhance and hinder plant development. Some bacteria found in the family are used for plant nutrition and collectively make up the rhizobia. Other bacteria such as Agrobacterium tumefaciens and A. rhizogenes severely alter the development of plants in their ability to induce crown galls or hairy roots found on the stem. The family has been of an interest to scientists for centuries in their ability to associate with plants and modify plant development. The Rhizobiaceae are, like all Proteobacteria, Gram-negative. They are aerobic, and the cells are usually rod-shaped. Many species of the Rhizobiaceae are diazotrophs which are able to fix nitrogen and are symbiotic with plant roots.
Halomonadaceae is a family of halophilic Proteobacteria.
The Gemmatimonadetes are a phylum of bacteria established in 2003. The phylum contains two classes Gemmatimonadetes and Longimicrobia.
Pseudomonas avellanae is a Gram-negative plant pathogenic bacterium. It is the causal agent of bacterial canker of hazelnut. Based on 16S rRNA analysis, P. avellanae has been placed in the P. syringae group. This species was once included as a pathovar of Pseudomonas syringae, but following DNA-DNA hybridization, it was instated as a separate species. Following ribotypical analysis Pseudomonas syringae pv. theae was incorporated into this species.
Pseudomonas mandelii is a fluorescent, Gram-negative, rod-shaped bacterium isolated from natural spring waters in France. Based on 16S rRNA analysis, P. mandelii has been placed in the P. fluorescens group.
Pseudomonas jessenii is a fluorescent, Gram-negative, rod-shaped bacterium isolated from natural mineral waters in France. The type strain is CIP 105274.
Pseudomonas rhodesiae is a Gram-negative, rod-shaped bacterium isolated from natural mineral waters. Based on 16S rRNA analysis, P. rhodesiae has been placed in the P. fluorescens group.
In taxonomy, Acidianus is a genus of the Sulfolobaceae.
Halorubrum is a genus in the family Halobacteriaceae. Halorubrum species can be found in the Dead Sea, Lake Zabuye and other waters with high salt concentration.
Deinococcus is one genus of three in the order Deinococcales of the bacterial phylum Deinococcus-Thermus highly resistant to environmental hazards. These bacteria have thick cell walls that give them Gram-positive stains, but they include a second membrane and so are closer in structure to Gram-negative bacteria. Deinococcus survive when their DNA is exposed to high doses of gamma and UV radiation. Whereas other bacteria change their structure in the presence of radiation, such as by forming endospores, Deinococcus tolerate it without changing their cellular form and do not retreat into a hardened structure. They are also characterized by the presence of the carotenoid pigment deinoxanthin that give them their pink color. They are usually isolated according to these two criteria. In August 2020, scientists reported that bacteria from Earth, particularly Deinococcus bacteria, were found to survive for three years in outer space, based on studies conducted on the International Space Station. These findings support the notion of panspermia, the hypothesis that life exists throughout the Universe, distributed in various ways, including space dust, meteoroids, asteroids, comets, planetoids or contaminated spacecraft.
Polynucleobacter is a genus of Proteobacteria, originally established by Heckmann and Schmidt (1987) to exclusively harbor obligate endosymbionts of ciliates belonging to the genus Euplotes.
Duganella phyllosphaerae is a bacterium from the genus Duganella in the Oxalobacteraceae family which was isolated from the leaf surface of Trifolium repens in Germany. D. phyllosphaerae is a bright-yellow pigmented bacterium.
Cupriavidus alkaliphilus is a bacterium of the genus Cupriavidus and the family Burkholderiaceae which was isolated from the rhizosphere of agricultural plants which grow on alkaline soils in northeast Mexico.
Pararhizobium giardinii is a Gram negative root nodule bacteria. It forms nitrogen-fixing root nodules on legumes, being first isolated from those of Phaseolus vulgaris.
Thauera terpenica is a gram-negative mesophilic motile bacterium from the genus of Thauera.
Mobiluncus mulieris is a curved, anaerobic bacteria from the vaginae of women. Its cells are motile and rod-shaped, having multiple subpolar flagella and multilayered gram-variable cell walls. Its type strain is ATCC 35243. According to Hoyles et al. 2004, this species is a heterotypic synonym of Falcivibrio grandis. It is often associated with vaginal infections.
Pararhizobium is a genus of Gram-negative soil bacteria that fix nitrogen. It has been segregated from the genus Rhizobium. Pararhizobium forms an endosymbiotic nitrogen-fixing association with roots of legumes.
Allorhizobium is a genus of Gram-negative soil bacteria, recently segregated from the genus Rhizobium. Some species of Allorhizobium form an endosymbiotic nitrogen-fixing association with roots of legumes, while others are known to cause crown gall.
Dokdonia donghaensis is a strictly aerobic, gram-negative, phototrophic bacterium that thrives in marine environments. The organism can grow at a broad range of temperatures on seawater media. It has the ability to form biofilms, which increases the organism’s resistance to antimicrobial agents, such as tetracycline.
References
- ↑ Mousavi SA, Willems A, Nesme X, de Lajudie P, Lindström K (2015). "Revised phylogeny of Rhizobiaceae: proposal of the delineation of Pararhizobium gen. nov., and 13 new species combinations". Syst Appl Microbiol . 38 (2): 84–90. doi:10.1016/j.syapm.2014.12.003. PMID 25595870.
- ↑ StrainInfo of Pararhizobium capsulatum (syn. Blastobacter capsulatus)
- ↑ UniProt
- ↑ Hirsch P. (1985). "Blastobacter aggregatus sp. nov., Blastobacter capsulatus sp. nov., and Blastobacter denitrificans sp. nov., New Budding Bacteria from Freshwater Habitats". Syst Appl Microbiol . 6 (3): 281–286. doi:10.1016/S0723-2020(85)80032-1.
- ↑ Deutsche Sammlung von Mikroorganismen und Zellkulturen