Phase-contrast photomicrographs of cells of strain WR061T grown on PY4S agar (a) and PYV4S agar (b). Bar= 5 microns. - Source:1Aerobic heterotroph
Fermentative bacteria. Propioniciclava have not been studied in activated sludge, but have been isolated from a methanogenic reactor treating cattle waste 1. The sole described species is a facultative anaerobe. Cells are irregular rods, which may occur singly or in short chains under certain conditions 1. Cobalamin (Vitamin B12) is required for growth 1. Ferments various carbohydrates, and produces acetate and propionate from glucose 1. The strains' in situ physiology in activated sludge has not been determined.
 Sugawara, Ueki, Abe, Kaku, Watanabe, Ueki, et al. - Propioniciclava tarda gen. nov., sp. nov., isolated from a methanogenic reactor treating waste from cattle farms. - Int. J. Syst. Evol. Microbiol. 61(Pt 9): 2298-303. doi:10.1099/ijs.0.027482-0