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Applied and Environmental Microbiology, July 2001, p. 3264-3268, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3264-3268.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Nitrogen-Fixing Nodules with Ensifer adhaerens Harboring Rhizobium tropici Symbiotic Plasmids

M. Antonio Rogel,1 Ismael Hernández-Lucas,1 L. David Kuykendall,2 David L. Balkwill,3 and Esperanza Martinez-Romero1,*

Centro de Investigación sobre Fijación de Nitrógeno, UNAM. Ap. P. 565-A, Cuernavaca, México1; Molecular Plant Pathology Lab. Plant Sciences Institute, Beltsville, Maryland 207052; and Department of Biological Science, Florida State University, Tallahassee, Florida 32306-44703

Received 18 December 2000/Accepted 10 April 2001

Ensifer adhaerens is a soil bacterium that attaches to other bacteria and may cause lysis of these other bacteria. Based on the sequence of its small-subunit rRNA gene, E. adhaerens is related to Sinorhizobium spp. E. adhaerens ATCC 33499 did not nodulate Phaseolus vulgaris (bean) or Leucaena leucocephala, but with symbiotic plasmids from Rhizobium tropici CFN299 it formed nitrogen-fixing nodules on both hosts. The nodule isolates were identified as E. adhaerens isolates by growth on selective media.

* Corresponding author. Mailing address: Centro de Investigación sobre Fijación de Nitrógeno, UNAM. Ap. P. 565-A, Cuernavaca, Mexico. Phone: (52-73)-13-16-97. Fax: (52-73)-17-55-81. E-mail: emartine{at}cifn.unam.mx.

Applied and Environmental Microbiology, July 2001, p. 3264-3268, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3264-3268.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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Copyright © 2001 by the American Society for Microbiology. All rights reserved.