Canadian Medical Guide > Organisms > Bacteria > Gram-Negative Bacteria > Gram-Negative Aerobic Bacteria > Gram-Negative Aerobic Rods and Cocci Terms and Definitions




Gram-Negative Aerobic Rods and Cocci

Medical Definition: A group of gram-negative bacteria consisting of rod- and coccus-shaped cells. They are both aerobic (able to grow under an air atmosphere) and microaerophilic (grow better in low concentrations of oxygen) under nitrogen-fixing conditions but, when supplied with a source of fixed nitrogen, they grow as aerobes.
Guide Notes: avoid: too general; prefer specific families & genera; infection: coord IM with GRAM-NEGATIVE BACTERIAL INFECTIONS (IM); DF: GRAM NEG AEROBIC RODS
Previously Indexed: Gram-Negative Aerobic Bacteria (1992-1997)
Gram-Negative Aerobic Rods and Cocci Categories.
Canadian Medical Guide Definition Acetobacteraceae - A family of gram-negative aerobic bacteria consisting of ellipsoidal to rod-shaped cells that occur singly, in pairs, or in chains.
Canadian Medical Guide Definition Acidithiobacillus - A genus of gram-negative rod-shaped bacteria in the class GAMMAPROTEOBACTERIA. They are obligately acidophilic and aerobic, using reduced sulfur compounds to support autotrophic growth.
Canadian Medical Guide Definition Afipia - A genus of gram-negative, oxidase-positive, nonfermentative rods which are motile by means of a single flagellum. Afipia felis and BARTONELLA HENSELAE are causative agents of CAT-SCRATCH DISEASE. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Alcaligenaceae - A family of gram-negative, aerobic, non-spore forming rods or cocci. Well known genera include ACHROMOBACTER; ALCALIGENES; and BORDETELLA.
Canadian Medical Guide Definition Alteromonas - A genus of gram-negative, straight or curved rods which are motile by means of a single, polar flagellum. Members of this genus are found in coastal waters and the open ocean. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Azorhizobium - A genus of gram-negative, rod-shaped, obligate aerobes which are motile by peritrichous flagella on solid medium and one lateral flagellum in liquid medium. Under microaerobic conditions Azorhizobium fixes nitrogen. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Azotobacteraceae - A subfamily of motile, gram-negative bacteria found in SOIL and WATER and capable of fixing atmospheric nitrogen.
Canadian Medical Guide Definition Bdellovibrio - A genus of bacteria capable of developing within other bacteria.
Canadian Medical Guide Definition Bradyrhizobiaceae - A proposed family of bacteria belonging to the alpha-2 subgroup of PROTEOBACTERIA.
Canadian Medical Guide Definition Brucellaceae - A family of gram-negative coccoid to rod-shaped bacteria in the order Rhizobiales. They are obligate parasites chiefly of warm-blooded VERTEBRATES. Many are pathogenic.
Canadian Medical Guide Definition Burkholderiaceae - A family of gram negative, aerobic, non-sporeforming, rod-shaped bacteria.
Canadian Medical Guide Definition Caulobacteraceae - A family of stalked bacteria that reproduces by budding. There are four genera: CAULOBACTER, Asticcacaulis, Brevundimonas, and Phenylobacterium.
Canadian Medical Guide Definition Cellvibrio - A genus of aerobic, gram-negative, motile, slightly curved, rod-shaped bacteria. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Comamonadaceae - A family of gram-negative aerobic bacteria in the class BETA PROTEOBACTERIA, encompassing the acidovorans rRNA complex. Some species are pathogenic for PLANTS.
Canadian Medical Guide Definition Coxiellaceae - A family of gram-negative bacteria in the order Legionellales. It includes genera COXIELLA and Rickettsiella.
Canadian Medical Guide Definition Francisella - The lone genus of bacteria in the family Francisellaceae, frequently found in natural waters. It can be parasitic in humans, other MAMMALS; BIRDS; and ARTHROPODS.
Canadian Medical Guide Definition Gluconacetobacter - A genus in the family ACETOBACTERACEAE comprised of acetate-oxidizing bacteria.
Canadian Medical Guide Definition Halomonadaceae - A family of gram-negative, moderately halophilic bacteria in the order Oceanospirillales. Members of the family have been isolated from temperate and Antarctic saline lakes, solar salt facilities, saline soils, and marine environments.
Canadian Medical Guide Definition Halothiobacillus - A genus of gram-negative, chemolithoautotrophic bacteria in the family CHROMATIACEAE. Several of its species were reclassified to this genus from THIOBACILLUS.
Canadian Medical Guide Definition Legionellaceae - A family of gram-negative, aerobic bacteria that do not form endospores or microcysts.
Canadian Medical Guide Definition Leptospiraceae - A family of bacteria consisting of flexible helical cells exhibiting a right-handed conformation. It consists of a single genus, LEPTOSPIRA.
Canadian Medical Guide Definition Methylobacteriaceae - A family of gram-negative bacteria in the order Rhizobiales. Genera include METHYLOBACTERIUM, Protomonas, and Roseomonas.
Canadian Medical Guide Definition Methylococcaceae - A family of gram-negative, aerobic bacteria utilizing only one-carbon organic compounds and isolated from in soil and water.
Canadian Medical Guide Definition Methylophilaceae - A family of gram-negative bacteria in the order Methylophilales.
Canadian Medical Guide Definition Moraxellaceae - A family of gram-negative, aerobic bacteria in the order Pseudomonadales. Some strains are parasites of the mucosal membranes of animals and humans; others are found in association with food products or in the environment.
Canadian Medical Guide Definition Neisseriaceae - A family of gram-negative, parasitic bacteria including several important pathogens of man.
Canadian Medical Guide Definition Nitrosomonadaceae - A family of gram-negative nitrifying bacteria, in the order Nitrosomonadales, class BETAPROTEOBACTERIA.
Canadian Medical Guide Definition Ochrobactrum - A genus of the family BRUCELLACEAE comprising obligately aerobic gram-negative rods with parallel sides and rounded ends.
Canadian Medical Guide Definition Oxalobacteraceae - A family of gram-negative bacteria in the class BETAPROTEOBACTERIA. There are at least eight genera.
Canadian Medical Guide Definition Paracoccus - Gram-negative non-motile bacteria found in soil or brines.
Canadian Medical Guide Definition Pseudoalteromonas - A genus of GRAM-NEGATIVE AEROBIC BACTERIA of marine origin. Many species were formerly classified under ALTEROMONAS.
Canadian Medical Guide Definition Pseudomonadaceae - A family of gram-negative bacteria usually found in soil or water and including many plant pathogens and a few animal pathogens.
Canadian Medical Guide Definition Ralstoniaceae - A family of gram-negative bacteria in the order Burkholderiales, class BETAPROTEOBACTERIA. It is comprised of a single genus RALSTONIA.
Canadian Medical Guide Definition Rhizobiaceae - A family of gram-negative bacteria which are saprophytes, symbionts, or plant pathogens.
Canadian Medical Guide Definition Rhodospirillaceae - A family of phototrophic bacteria, in the order Rhodospirillales, isolated from stagnant water and mud.
Canadian Medical Guide Definition Sphingomonas - A genus of gram-negative, aerobic, rod-shaped bacteria characterized by an outer membrane that contains glycosphingolipids but lacks lipopolysaccharide. They have the ability to degrade a broad range of substituted aromatic compounds.
Canadian Medical Guide Definition Thermus - Gram-negative aerobic rods found in warm water (40-79 degrees C) such as hot springs, hot water tanks, and thermally polluted rivers.
Canadian Medical Guide Definition Xanthobacter - A genus of gram-negative, aerobic, rod-shaped bacteria found in wet soil containing decaying organic material and in water. Cells tend to be pleomorphic if grown on media containing succinate or coccoid if grown in the presence of an alcohol as the sole carbon source. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
Canadian Medical Guide Definition Xanthomonadaceae - A family of gram-negative bacteria, in the order Xanthomonadales, pathogenic to plants.
Canadian Medical Guide Definition Zoogloea - A genus of RHODOCYCLACEAE occurring as rod-shaped cells embedded in a gelatinous matrix. It includes Z. filipendula.

Gram-Negative Aerobic Rods and Cocci Medical Definitions and Terms

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