Dissimilatory metal reduction by the facultative anaerobe Pantoea agglomerans SP1.
Anaerobic enrichments with acetate as the electron donor and Fe(III) as the terminal electron acceptor were obtained from sediments of Salt Pond, a coastal marine basin near Woods Hole, Mass. A pure culture of a facultatively anaerobic Fe(III) reducer was isolated, and 16S rRNA analysis demonstrated that this organism was most closely related to Pantoea (formerly Enterobacter) agglomerans, a member of the family Enterobacteriaceae within the gamma subdivision of the Proteobacteria. This organism, designated strain SP1, can grow by coupling the oxidation of acetate or H(2) to the reduction of a variety of electron acceptors, including Fe(III), Mn(IV), Cr(VI), and the humic substance analog 2,6-anthraquinone disulfonate, but not sulfate. To our knowledge, this is the first mesophilic facultative anaerobe reported to couple acetate oxidation to dissimilatory metal reduction.
Francis
C A
CA
Marine Biology Research Division and Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California-San Diego, La Jolla 92093-0202, USA.
Obraztsova
A Y
AY
Tebo
B M
BM
D000085:Acetates / Q000378:metabolism*; D000693:Anaerobiosis; D017608:Chromium Compounds / Q000378:metabolism; D003470:Culture Media; D005290:Ferric Compounds / Q000378:metabolism; D019015:Geologic Sediments / Q000382:microbiology*; D017895:Manganese Compounds / Q000378:metabolism; D008670:Metals / Q000378:metabolism*; D008969:Molecular Sequence Data; D010084:Oxidation-Reduction; D020636:Pantoea / Q000145:classification* / Q000302:isolation & purification* / Q000378:metabolism; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D014871:Water Microbiology
D000085:Acetates; D017608:Chromium Compounds; D003470:Culture Media; D005290:Ferric Compounds; D017895:Manganese Compounds; D008670:Metals; D012336:RNA, Ribosomal, 16S