title: Arsenicicoccus bolidensis a novel arsenic reducing actinomycete in contaminated sediments near the Adak mine (northern Sweden): impact on water chemistry.
abstract: Weathering of mine tailings in Adak results in high As concentrations in surface and ground water, sediments, and soil. In spite of the oxic conditions, As-rich surface and ground water samples indicate As(III) species predominantly (up to 83%). Several microorganisms were isolated from the enrichment cultures that were involved in As cycling. Amongst them was Arsenicicoccus bolidensis - a novel gram-positive, facultatively anaerobic, coccus-shaped actinomycete, which actively reduced As(V) to As(III) in aqueous media. A. bolidensis reduced 0.06-0.20 mM day(-1) As(V). As(V) reduction displays a direct correlation between the initial As(V) concentration, growth rate, and biomass yield.
authors.affiliation: Department of Geology and Geochemistry, Stockholm University, 10691 Stockholm, Sweden. joyanto.routh@geo.su.se
authors.forename: Joyanto
authors.initials: J
authors.lastname: Routh
authors.forename: Ambujom
authors.initials: A
authors.lastname: Saraswathy
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Collins
mesh_terms: D000192:Actinomycetales / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D001151:Arsenic / Q000032:analysis / Q000378:metabolism*; D001483:Base Sequence; D001673:Biodegradation, Environmental; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis; D008906:Mining; D008969:Molecular Sequence Data; D010084:Oxidation-Reduction; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D045483:Rivers / Q000737:chemistry; D017422:Sequence Analysis, DNA; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D013440:Sulfides; D013548:Sweden; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D012989:Soil Pollutants; D013440:Sulfides; D014874:Water Pollutants, Chemical; D001151:Arsenic