Selenomonas acidaminovorans sp. nov., a versatile thermophilic proton-reducing anaerobe able to grow by decarboxylation of succinate to propionate

A moderately thermophilic anaerobic bacterium (strain Su883), which decarboxylated succinate to propionate, was isolated from granular methanogenic sludge. The bacterium appeared to ferment a number of amino acids including glutamate, histidine, arginine, ornithine, citrulline, and threonine to propionate, acetate and hydrogen. Strain Su883 is a motile, gram-negative, non-spore-forming slightly curved rod with a DNA base ratio of 56.5 mol% guanine-plus-cytosine. Selenomonas acidaminovorans Su883 is proposed as type strain for the new species within the genus Selenomonas .