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Ecophysiology of "Halarsenatibacter silvermanii" strain SLAS-1T, gen. nov., sp. nov., a facultative chemoautotrophic arsenate respirer from salt-saturated Searles Lake, California.
Blum, Jodi Switzer; Han, Sukkyun; Lanoil, Brian; Saltikov, Chad; Witte, Brian; Tabita, F Robert; Langley, Sean; Beveridge, Terry J; Jahnke, Linda; Oremland, Ronald S.
Affiliation
  • Blum JS; U.S. Geological Survey, MS 480, 345 Middlefield Rd., Menlo Park, CA 94025, USA.
Appl Environ Microbiol ; 75(7): 1950-60, 2009 Apr.
Article in En | MEDLINE | ID: mdl-19218420
ABSTRACT
Searles Lake occupies a closed basin harboring salt-saturated, alkaline brines that have exceptionally high concentrations of arsenic oxyanions. Strain SLAS-1(T) was previously isolated from Searles Lake (R. S. Oremland, T. R. Kulp, J. Switzer Blum, S. E. Hoeft, S. Baesman, L. G. Miller, and J. F. Stolz, Science 3081305-1308, 2005). We now describe this extremophile with regard to its substrate affinities, its unusual mode of motility, sequenced arrABD gene cluster, cell envelope lipids, and its phylogenetic alignment within the order Halanaerobacteriales, assigning it the name "Halarsenatibacter silvermanii" strain SLAS-1(T). We also report on the substrate dynamics of an anaerobic enrichment culture obtained from Searles Lake that grows under conditions of salt saturation and whose members include a novel sulfate reducer of the order Desulfovibriales, the archaeon Halorhabdus utahensis, as well as a close homolog of strain SLAS-1(T).
Subject(s)

Full text: 1 Database: MEDLINE Main subject: Arsenates / Water Microbiology / Gram-Positive Bacteria Country/Region as subject: America do norte Language: En Year: 2009 Type: Article

Full text: 1 Database: MEDLINE Main subject: Arsenates / Water Microbiology / Gram-Positive Bacteria Country/Region as subject: America do norte Language: En Year: 2009 Type: Article