Isolation and Identification of a New Strain Acidophilic Heterotrophic Bacteria from Stone Coal Drainage

Abstract

A strain of acidophilic heterotrophic bacteria named YY-2 was isolated from acid mine drainage collected in Yiyang, Hunan, China. The gram-negative-staining cells of YY-2 were straight long rod, 1.2～2.4 μm in length and 2.3～8.8 μm in diameter; the optimum temperature for growth was 25°C, the optimum initial pH for growth was 3.5, the optimal salt concentration was 7.5%, the maximum salt concentration was 18%. 16S rDNA gene analyses reveal that YY-2 belongs to Acidiphilium.