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Applied and Environmental Microbiology, December 2006, p. 7602-7606, Vol. 72, No. 12
0099-2240/06/$08.00+0     doi:10.1128/AEM.00930-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Relationships between Mycobacterium Isolates from Patients with Pulmonary Mycobacterial Infection and Potting Soils{triangledown} ,{dagger}

Mary Ann De Groote,1 Norman R. Pace,1* Kayte Fulton,2 and Joseph O. Falkinham III3

Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, Colorado 80309-0347,1 National Jewish Medical and Research Center, Denver, Colorado 80206,2 Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-04063

Received 19 April 2006/ Accepted 5 October 2006

High numbers of mycobacteria, including known pathogenic species such as Mycobacterium avium, Mycobacterium intracellulare, and Mycobacterium chelonae, were recovered from aerosols produced by pouring commercial potting soil products and potting soil samples provided by patients with pulmonary mycobacterial infections. The dominant mycobacteria in the soil samples corresponded to the dominant species implicated clinically. Profiles of large restriction fragments obtained by pulsed-field gel electrophoresis demonstrated a closely related pair of M. avium isolates recovered from a patient and from that patient's own potting soil. Thus, potting soils are potential sources of infection by environmental mycobacteria. Use of dust-excluding masks should be considered during potting or other activities that generate aerosol with soil.

* Corresponding author. Mailing address: Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309. Phone: (303) 735-1808. Fax: (303) 492-7744. E-mail: nrpace{at}colorado.edu.

{triangledown} Published ahead of print on 20 October 2006.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.

Applied and Environmental Microbiology, December 2006, p. 7602-7606, Vol. 72, No. 12
0099-2240/06/$08.00+0     doi:10.1128/AEM.00930-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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