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Endospore formation is usually triggered by a lack of nutrients, and usually occurs in gram-positive bacteria. In endospore formation, the bacterium divides within its cell wall, and one side then engulfs the other. [3] Endospores enable bacteria to lie dormant for extended periods, even centuries. There are many reports of spores remaining ...
Most bacteria are unable to form endospores due to their high resistance, but some common species are the genera Bacillus ( over 100 species) and Clostridium (over 160 species). [2] Bacillus anthraces, which causes anthrax [5] Bacillus cereus- Can cause two types of food poisoning: emetic and diarrheal [2] Bacillus subtilis- Found in soil [5]
Bacillus subtilis (/ b ə ˈ s ɪ l. ə s s u b ˈ t iː. l i s /), [3] [4] known also as the hay bacillus or grass bacillus, is a gram-positive, catalase-positive bacterium, found in soil and the gastrointestinal tract of ruminants, humans and marine sponges.
The Bacillaceae are a family of gram-positive, heterotrophic, rod-shaped bacteria that may produce endospores. [1] Motile members of this family are characterized by peritrichous flagella. Some Bacillaceae are aerobic, while others are facultative or strict anaerobes. Most are not pathogenic, but Bacillus species are known to cause disease in ...
Fig1. The sporulation process of Bacillus subtilis. Bacillus subtilis is a rod-shaped, Gram-positive bacteria that is naturally found in soil and vegetation, and is known for its ability to form a small, tough, protective and metabolically dormant endospore.
Bacillus (Latin "stick") is a genus of Gram-positive, rod-shaped bacteria, a member of the phylum Bacillota, with 266 named species.The term is also used to describe the shape (rod) of other so-shaped bacteria; and the plural Bacilli is the name of the class of bacteria to which this genus belongs.
The bacillus shape of S. thermophilum cells may be caused by the mreBCD (STH372-4) gene, located adjacent to the min locus. [3] Although it has no flagella, the genome of S. thermophilum does include a flagella biosynthesis gene cluster. S. thermophilum is found to produce endospores in specific conditions. [3]
S. pasteurii is a gram positive bacterium that is rod-like shaped in nature. It has the ability to form endospores in the right environmental conditions to enhance its survival, which is a characteristic of its bacillus class. [5] It has dimensions of 0.5 to 1.2 microns in width and 1.3 to 4.0 microns in length.