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Applied and Environmental Microbiology, May 2007, p. 3428-3430, Vol. 73, No. 10
0099-2240/07/$08.00+0     doi:10.1128/AEM.02586-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Effect of Exogenous Reductant on Growth and Iron Mobilization from Ferrihydrite by the Pseudomonas mendocina ymp Strain{triangledown}

Suraj Dhungana,* Charles R. Anthony III, and Larry E. Hersman

Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87544

Received 7 November 2006/ Accepted 13 March 2007

Growth of the Pseudomonas mendocina ymp strain on insoluble ferrihydrite is enhanced by exogenous reductants with concurrent increase in soluble iron concentrations. This shows that exogenous reductants play a substantial role in the overall microbial iron bioavailability. The exogenous reductants may work together with the siderophores, Fe-scavenging agents, to facilitate ferrihydrite dissolution.

* Corresponding author. Present address: National Institute of Environmental Health Sciences (NIEHS), Research Triangle Park, NC 27709. Phone: (919) 541-9814. Fax: (919) 541-4133. E-mail: dhunganas{at}niehs.nih.gov

{triangledown} Published ahead of print on 23 March 2007.

Applied and Environmental Microbiology, May 2007, p. 3428-3430, Vol. 73, No. 10
0099-2240/07/$08.00+0     doi:10.1128/AEM.02586-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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