| Acetonema | |
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| Genus: | Acetonema |
| Type species | |
| Acetonema longum Kane and Breznak 1992 | |
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Acetonema is a genus of bacteria in the family Veillonellaceae. It is H2-oxidizing CO2-reducing acetogenic strictly anaerobic endospore-forming Gram-negative motile rod-shaped, isolated from gut contents of the wood-feeding termite Pterotermes occidentis. Cells are catalase positive, oxidase negative, and have 51.5 mol percent G + C in their DNA. Optimum conditions for growth on H2 + CO2 are at 30–33 degrees C and pH (initial) 7.8. Acetonema longum is the sole species within the genus. [3]