Knowra Bacillota Bacillota Bacillota is a major phylum of bacteria that includes Bacillus , Clostridium , and many lactic acid bacteria. Its members vary widely in metabolism, shape, and ability to form spores.
Bacteria : Bacteria are single-celled prokaryotes whose cells lack a membrane-bound nucleus. Bacillota is one of the major lineages within this domain of life.
Endospore : A dormant, resistant structure formed inside certain bacterial cells to survive harsh conditions. Some Bacillota, including species of Bacillus and Clostridium , persist through endospore formation.
Lactobacillus : A genus of lactic acid bacteria that includes species used in fermentation and found in animal microbiomes. Its members illustrate the food-making and host-associated roles of Bacillota.
Bacteroidota : A bacterial phylum containing many anaerobic organisms common in animal guts and environmental communities. It is a major gut-associated lineage distinct from Bacillota in classification and many cell traits.
Bacterial cell wall : A rigid structure outside the bacterial cell membrane that helps maintain cell shape and resist pressure. Cell-wall traits help distinguish Bacillota from several other bacterial phyla.
Sporulation : The cellular process by which some bacteria form dormant spores under adverse conditions. In spore-forming Bacillota, this process reorganizes the cell into a stress-resistant state.
Bacillus subtilis : A spore-forming bacterium widely studied as a model for cell differentiation and secretion. This species is a tractable example of Bacillota biology and industrial enzyme production.
Actinomycetota : A bacterial phylum that includes Streptomyces , Mycobacterium , and many high-GC-content bacteria. Its often Gram-positive members show that staining similarity does not make them part of Bacillota.
Gram-positive bacteria : Bacteria that retain crystal violet dye in the Gram stain, typically because of a thick peptidoglycan cell wall. Many Bacillota stain Gram-positive, though this trait does not define the phylum without exception.
Fermentation : A metabolic process that extracts energy from organic compounds without using an electron transport chain as the terminal energy pathway. Many Bacillota use fermentation, producing acids, alcohols, or gases from organic substrates.
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