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) |
Acetobacteraceae - A family of gram-negative aerobic bacteria consisting of ellipsoidal to rod-shaped cells that occur singly, in pairs, or in chains. | |
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. | |
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) | |
Alcaligenaceae - A family of gram-negative, aerobic, non-spore forming rods or cocci. Well known genera include ACHROMOBACTER; ALCALIGENES; and BORDETELLA. | |
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) | |
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) | |
Azotobacteraceae - A subfamily of motile, gram-negative bacteria found in SOIL and WATER and capable of fixing atmospheric nitrogen. | |
Bdellovibrio - A genus of bacteria capable of developing within other bacteria. | |
Bradyrhizobiaceae - A proposed family of bacteria belonging to the alpha-2 subgroup of PROTEOBACTERIA. | |
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. | |
Burkholderiaceae - A family of gram negative, aerobic, non-sporeforming, rod-shaped bacteria. | |
Caulobacteraceae - A family of stalked bacteria that reproduces by budding. There are four genera: CAULOBACTER, Asticcacaulis, Brevundimonas, and Phenylobacterium. | |
Cellvibrio - A genus of aerobic, gram-negative, motile, slightly curved, rod-shaped bacteria. (From Bergey's Manual of Determinative Bacteriology, 9th ed) | |
Comamonadaceae - A family of gram-negative aerobic bacteria in the class BETA PROTEOBACTERIA, encompassing the acidovorans rRNA complex. Some species are pathogenic for PLANTS. | |
Coxiellaceae - A family of gram-negative bacteria in the order Legionellales. It includes genera COXIELLA and Rickettsiella. | |
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. | |
Gluconacetobacter - A genus in the family ACETOBACTERACEAE comprised of acetate-oxidizing bacteria. | |
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. | |
Halothiobacillus - A genus of gram-negative, chemolithoautotrophic bacteria in the family CHROMATIACEAE. Several of its species were reclassified to this genus from THIOBACILLUS. | |
Legionellaceae - A family of gram-negative, aerobic bacteria that do not form endospores or microcysts. | |
Leptospiraceae - A family of bacteria consisting of flexible helical cells exhibiting a right-handed conformation. It consists of a single genus, LEPTOSPIRA. | |
Methylobacteriaceae - A family of gram-negative bacteria in the order Rhizobiales. Genera include METHYLOBACTERIUM, Protomonas, and Roseomonas. | |
Methylococcaceae - A family of gram-negative, aerobic bacteria utilizing only one-carbon organic compounds and isolated from in soil and water. | |
Methylophilaceae - A family of gram-negative bacteria in the order Methylophilales. | |
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. | |
Neisseriaceae - A family of gram-negative, parasitic bacteria including several important pathogens of man. | |
Nitrosomonadaceae - A family of gram-negative nitrifying bacteria, in the order Nitrosomonadales, class BETAPROTEOBACTERIA. | |
Ochrobactrum - A genus of the family BRUCELLACEAE comprising obligately aerobic gram-negative rods with parallel sides and rounded ends. | |
Oxalobacteraceae - A family of gram-negative bacteria in the class BETAPROTEOBACTERIA. There are at least eight genera. | |
Paracoccus - Gram-negative non-motile bacteria found in soil or brines. | |
Pseudoalteromonas - A genus of GRAM-NEGATIVE AEROBIC BACTERIA of marine origin. Many species were formerly classified under ALTEROMONAS. | |
Pseudomonadaceae - A family of gram-negative bacteria usually found in soil or water and including many plant pathogens and a few animal pathogens. | |
Ralstoniaceae - A family of gram-negative bacteria in the order Burkholderiales, class BETAPROTEOBACTERIA. It is comprised of a single genus RALSTONIA. | |
Rhizobiaceae - A family of gram-negative bacteria which are saprophytes, symbionts, or plant pathogens. | |
Rhodospirillaceae - A family of phototrophic bacteria, in the order Rhodospirillales, isolated from stagnant water and mud. | |
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. | |
Thermus - Gram-negative aerobic rods found in warm water (40-79 degrees C) such as hot springs, hot water tanks, and thermally polluted rivers. | |
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) | |
Xanthomonadaceae - A family of gram-negative bacteria, in the order Xanthomonadales, pathogenic to plants. | |
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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