from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An organism, such as a bacterium, requiring oxygen to live. Also called aerobium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any organism (but especially a bacterium) that can tolerate the presence of oxygen, or that needs oxygen to survive
from the GNU version of the Collaborative International Dictionary of English
- n. an organism such as a microorganism that requires oxygen for life or growth.
from The Century Dictionary and Cyclopedia
- n. One of the aërobia.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an organism (especially a bacterium) that requires air or free oxygen for life
The original "slave" might have been photosynthetic, while the "host" might have been a facultative aerobe thanks to peroxisomes.
If we have an facultative aerobe, it already had aerobic respiration.
The host (facultative aerobe implies facultative anaerobe, doesn't it?) could handle aerobic conditions already, presumably because it had peroxisomes as oxygen sink. t's funny that you mention peroxisomes, as people once thought they were endosymbionts but now evidence seems to point to en origin from the ER.
The growth of the aerobe will use up all the oxygen that reaches it and will not allow any to pass through to the medium below, which will consequently remain in an anaerobic condition.
Obvious growth in the closed branch as well as in the bulb or in the inverted gas tube as well as in the bulk of the medium will indicate that it is a facultative anaerobe; whilst growth only occurring in the bulb or in the closed branch shows that it is an obligate aerobe or anaerobe respectively.
~ -- The question as to whether the organism under observation is (a) an obligate aerobe, (b) a facultative anaerobe, or
Pour a layer, 1 or 2 cm. deep, of broth cultivation of a vigourous aerobe -- e. g.,
Pontiac fever Facultative intracellular L. pneumophila flea Bubonic plague Septicemic plague Pneumonic plague V and W Ag coagulase Y. pestis Water aerosols, raw vegetables, flowers Resistant to chem. agents, antibiotics; Oxidase + NONFERMENTING Bluish green pigment-pyocyanin Grape-like odor Obligate aerobe Nosocomial infection Burns, Immunocompromised (eg., cystic fibrosis), 'hot tub folliculitis' Echtyma gangrenosum Exotoxin - (target: liver);
(a) By adapting the atmospheric conditions to the particular organism it is desired to isolate, it is comparatively easy to separate a strict aerobe from a strict anaerobe, and _vice versa_.
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