ACIDOPHILIC HETEROTROPHIC BACTERIA ISOLATED FROM ACIDIC MINE DRAINAGE, SEWAGE, AND SOILS
1987 年 33 巻 1 号 p. 11-25
詳細
1987 年 33 巻 1 号 p. 11-25
Obligately acidophilic heterotrophic bacteria were isolated from weakly acidic environments such as sewage and soil as well as from acidic mine drainage. In the mine water, the bacterial populations ranged from 0 to 104 cells per ml of water or g of mud, moreover a large number of bacteria
(104-106 cells per ml) were isolated from an aeration tank in which ferrous iron in the mine water was being oxidized to ferric iron by iron oxidizing bacteria. Although the population was small, 9 strains of bacteria of this type were found in 106 samples from the sewage and the soils. The bacterial characteristics of the strains isolated from acidic mine drainage were in good agreement with the genus Acidiphilium. However, the characteristics of the bacteria from weakly acidic environments differed from Acidiphilium in the pH growth range and sensitivity to organic substrates. The isolated bacteria were classified into 3 groups based on DNA base composition, cellular fatty acid composition, pH growth range and carbon sources for growth.
