Article · Wikipedia archive · Last revised Jul 19, 2026

Bacillus pseudofirmus

Bacillus pseudofirmus is a facultative anaerobe bacterium. It is a gram positive, alkaliphilic and alkalitolerant, aerobic endospore-forming bacterium.

Last revised
Jul 19, 2026
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Bacillus pseudofirmus
Scientific classification Edit this classification
Domain: Bacteria
Kingdom: Bacillati
Phylum: Bacillota
Class: Bacilli
Order: Bacillales
Family: Bacillaceae
Genus: Bacillus
Species:
B. pseudofirmus
Binomial name
Bacillus pseudofirmus
Nielsen et al. 1995

Bacillus pseudofirmus is a facultative anaerobe bacterium.1 It is a gram positive, alkaliphilic and alkalitolerant, aerobic endospore-forming bacterium.

In 2019, it was found in a hyperalkaline spring in Zambales (Philippines) a bacterial consortium of a strain of Bacillus pseudofirmus with Bacillus agaradhaerens that can biodegrade LDPE plastic.2

This species has been recently transferred into the genus Alkalihalobacillus. 3 The correct nomenclature is Alkalihalobacillus pseudofirmus.

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