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GENUS DESULFOMICROBIUM
Citation:
Genthner, B. AND R D. Devereux. GENUS DESULFOMICROBIUM. 2nd, Chapter C, Nazina, Polaraus & Rosanova (ed.), Bergey's Manual of Systematic Bacteriology. Williams & Wilkins, Baltimore, MD, II:22 p., (2005).
Impact/Purpose:
Book chapter
Description:
Short, straight rod- or ellipsoidal-shaped cells (0.5-0.9 x 1.3-2.9 |m) with rounded ends, either singly or in pairs (Sharak Genthner et al., 1994). Gram-negative stain reaction and cell-wall structure. Cells are motile, usually by a single polar flagellum. Obligate anaerobe. Endospores not formed. Pre-reduced medium or reducing agent required in medium for growth. Growth by anaerobic respiration using sulfate or sulfoxyanions as terminal electron acceptor, producing H2S. Simple organic compounds that serve as electron donors during sulfate respiration include lactate, pyruvate, ethanol, formate, and hydrogen. Sulfate respiration of lactate is incomplete with the formation of acetate and CO2. Hydrogenase present. Cells contain b and c type cytochromes. Metabolism can also be fermentative using simple organic substrates, including pyruvate, malate, or fumarate. Carbohydrates are not fermented. No specific vitamins required. Nitrate not reduced. Desulfoviridin absent. Optimum temperature 25-30|C. G+C range: 52.5% - 59.6%.