Growth of the three strains was slow on D-glucose and fast on D-fructose (Endo et al., 2009). Growth on D-glucose was
enhanced in the presence of 1 % (w/v) pyruvate or under aerobic conditions, suggesting that an electron acceptor
enhanced the growth of the novel strains. Growth enhancement by the presence of pyruvate is unknown for
the phylogenetic relatives of the novel strains. Aerobic culturing repressed the growth of the three novel strains on