There is considerable interspecies variability in these observed criteria, and intraspecies Gram-stain variability appears in some cases to be related to the age of the culture. Most clostridia are motile via peritrichous flagella; however, for some species such as C. perfringens, motility has not...
Firmicutes / "Clostridia" / Clostridiales / Clostridiaceae / Clostridium Rods , usually stain Gram-positive at least in very early stages of growth, although in some species Gram-stain-positive cells have not been seen. Motile or nonmotile. When motile, cells usually are peritrichous. The ...
Clostridium, genus of gram-positive bacteria (see Gram's stain), several species of which cause significant, potentially deadly diseases in humans as a result of the toxins that each produces. Clostridium bacteria are rod-shaped and anaerobic, that is, they live in the absence of oxygen; they...
Figure 19-4b.Gram stain ofCl. novyispecies showing large gram-positive rods with oval to cylindrical subterminal spores not swelling the sporangium, × 2500. Types B, C, and D are extremely demanding, both in their nutritional requirements and in their tolerance of oxygen. In our hands, cons...
Clostridium, genus of gram-positive bacteria (seeGram's stain), several species of which cause significant, potentially deadly diseases in humans as a result of the toxins that each produces.Clostridiumbacteria are rod-shaped and anaerobic, that is, they live in the absence of oxygen; they are...
In cases of extended incubation, some of the Clostridium species have been shown to lose their Gram-positive appearance. A few species, however, have been shown to be Gram-negative and will stain pink during Gram staining. MicroscopyToday, well over 200 species belonging to the genus ...
3.2. Spore-forming: Clostridium species have the ability to form spores, which are highly resistantstructures that allow the bacteria to survive adverse conditions. 3.3. Gram-positive: These bacteria have a thick cell wall that stains purple when subjected to the Gram stain test. 3.4. Rod-shaped...
Clostridium bacteria are rod-shaped gram positive bacteria that are commonly found in humans' intestines. Several species of...
Based on the genotypic, phenotypic and chemotaxonomic characteristics, strain MJC39 T represents a novel species of the genus Clostridium, for which the name Clostridium pabulibutyricum sp. nov. is proposed. The type strain is MJC39 T (=JCM 31506 T =DSM 103944 T ). 展开 关键词: Clostridium...
Many species have been identified with some being pathogenic. They occur in water, soil, and in the intestinal tract of humans and lower animals. Definition (CSP) genus of motile or nonmotile gram positive bacteria of the family Clostridiaceae; many species have been identified with some being ...