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A bacillus (pl.: bacilli), also called a bacilliform bacterium or often just a rod (when the context makes the sense clear), is a rod-shaped bacterium or archaeon. Bacilli are found in many different taxonomic groups of bacteria. However, the name Bacillus, capitalized and italicized, refers to a specific genus of bacteria.
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 term "Bacillus" (capitalized and italicized) is also the name of a genus (Bacillus anthracis) that, among many other genera, falls within the class Bacilli. The word "bacillus" (or its plural "bacilli", with a small b) is also a generic term to describe the morphology of any rod-shaped bacterium.
Bacillus subtilis is a Gram-positive bacterium, rod-shaped and catalase-positive. It was originally named Vibrio subtilis by Christian Gottfried Ehrenberg, [9] and renamed Bacillus subtilis by Ferdinand Cohn in 1872 [10] (subtilis being the Latin for "fine, thin, slender").
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 ...
Bacillus cereus is a Gram-positive rod-shaped bacterium commonly found in soil, food, and marine sponges. [1] The specific name, cereus , meaning "waxy" in Latin , refers to the appearance of colonies grown on blood agar .
The name Cytobacillus can be broken down into the prefix "cyto-" (from the Greek noun kytos, referring to hollow, vessel, jar or a cell in biology) and the suffix "-bacillus" (from the Latin noun bacillus, referring to a small staff or rod and Bacillus, the bacterial genus). Together, Cytobacillus refers to a rod-shaped cell.
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.