Sulfide oxidation coupled to arsenate reduction by a diverse microbial community in Soda Lake

Article Abstract:

The arsenate-reducing, sulfide-oxidizing population of Mono Lake, California was characterized by analyzing the distribution and diversity of rrnA, cbbL, and dissimilatory arsenated reductase (arrA) genes in environmental DNA, arsenate-plus sulfide-amended lake water, mixed cultures, and isolates. The findings showed that sulfide oxidation coupled with arsenate reduction appears to proceed through a two-electron transfer, resulting in the production of arsenite and an intermediate S compound that is subsequently disproportionated.

Analysis, Genetic aspects, Marine bacteria, Oxidation-reduction reaction, Oxidation-reduction reactions, Sulfides, Mono Lake, Chemical properties

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Distribution of RuBisCO genotypes along a redox gradient in Mono lake, California

Article Abstract:

An investigation is made of the use of ribulose bisphosphate carboxylase oxygenase as an indicative factor in the diversity of carbon fixing microorganisms in Mono Lake, California. An analysis is also made of the distribution and phylogenetic richness of form I and II genes taken from the lake.

Microorganisms, Lake ecology, Diphosphonates

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Dissimilatory arsenate reduction with sulfide as electron donor: Experiments with mono lake water and isolation of strain MLMS-1, a chemoautotrophic arsenate respirer

Article Abstract:

The ability of sulfide to serve as an electron donor for arsenate reduction in experiments with lake water is tested. Alignment of 16SrRNA sequences indicated that strain MLMS-1 was in the sigma-proteobacteria, located near sulfate reducers like desulfobulbus from Mono Lake.

Product information, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Arsenic & Compounds, Testing, Arsenic compounds, Water, Ribosomal RNA, Electron transport

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