Abstract
A new species of hydrogen-utilizing bacterium has been isolated from natural sources. This organism is Gram-negative, rod-shaped, 0.6×0.8-2.0μm in size, motile with peritrichous flagella. The content of guanine plus cytosine in the DNA of this organism is 70.2mol%. The organism is facultatively autotrophic. Carbohydrates are scarcely assimilated by this organism and only fructose is assimilated. Organic acids are assimilated well. Based on these distinctive characteristics, this hydrogen-utilizing bacterium has been named Alcaligenes hydrogenophilus sp. nov.
