Dissimilatory iodate reduction by marine Pseudomonas sp. strain SCT.

ABSTRACT: Bacterial iodate (IO(3)(-)) reduction is poorly understood largely due to the limited number of available isolates as well as the paucity of information about key enzymes involved in the reaction. In this study, an iodate-reducing bacterium, designated strain SCT, was newly isolated from marine sediment slurry. SCT is phylogenetically closely related to the denitrifying bacterium Pseudomonas stutzeri and reduced 200 microM iodate to iodide (I(-)) within 12 h in an anaerobic culture containing 10 mM nitrate. The strain did not reduce iodate under the aerobic conditions. An anaerobic washed cell suspension of SCT reduced iodate when the cells were pregrown anaerobically with 10 mM nitrate and 200 microM iodate. However, cells pregrown without iodate did not reduce it. The cells in the former

SUBMITTER: Amachi S 

PROVIDER: S-EPMC2074906 | biostudies-literature | 2007 Sep

REPOSITORIES: biostudies-literature