Growth of Cupriavidus metallidurans CH34 in the presence of basalt

ABSTRACT: The weathering of volcanic minerals makes a significant contribution to the global silicate weathering budget, influencing carbon dioxide drawdown and climate control. Basalt rocks may account for over 30% of the global carbon dioxide drawdown in silicate weathering. Yet the genetics of biological rock weathering are unknown. For the first time, we apply a DNA microarray to investigate the genes involved in weathering by the heavy metal resistant organism, Cupriavidus metallidurans CH34; in particular we investigate the sequestering of iron. The results show that the bacterium sequesters iron in the ferrous state (FeII); therefore, not requiring siderophores. Instead an energy efficient process involving upregulation of large porins is employed concomitantly with genes associated with biof

ORGANISM(S): Ralstonia metallidurans CH34

SUBMITTER: Natalie Leys 

PROVIDER: E-GEOD-12133 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress