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Appl Environ Microbiol, January 1998, p. 356-358, Vol. 64, No. 1
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Biodegradation of Phosphonomycin by Rhizobium huakuii PMY1

John W. McGrath,1,2,* Friedrich Hammerschmidt,3 and John P. Quinn1,2

School of Biology and Biochemistry1 and QUESTOR Centre,2 The Queen's University of Belfast, Belfast, Northern Ireland, and Institute of Organic Chemistry, University of Vienna, Vienna, Austria3

Received 15 August 1997/Accepted 29 October 1997

The biodegradation by Rhizobium huakuii PMY1 of up to 10 mM phosphonomycin as a carbon, energy, and phosphorus source with accompanying Pi release is described. This biodegradation represents a further mechanism of resistance to this antibiotic and a novel, phosphate-deregulated route for organophosphonate metabolism by Rhizobium spp.

* Corresponding author. Mailing address: School of Biology and Biochemistry, The Queen's University of Belfast, Medical Biology Centre, 97 Lisburn Rd., Belfast BT9 7BL, Northern Ireland. Phone: 01232 245133, ext. 2250 or 2287. Fax: 01232 236505. E-mail: j.mcgrath{at}qub.ac.uk.




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