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Applied and Environmental Microbiology, November 2009, p. 6919-6923, Vol. 75, No. 21
0099-2240/09/$08.00+0     doi:10.1128/AEM.01384-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Pseudoalteromonas Bacteria Are Capable of Degrading Paralytic Shellfish Toxins{triangledown} ,{dagger}

Carrie J. Donovan,1 Rafael A. Garduño,2 Martin Kalmokoff,3 John C. Ku,1 Michael A. Quilliam,4 and Tom A. Gill1*

Food Science Program, Department of Process Engineering and Applied Science, Dalhousie University, Halifax, Nova Scotia, Canada B3J 2X4,1 Department of Microbiology and Immunology and Department of Medicine—Division of Infectious Diseases, Dalhousie University, Halifax, Nova Scotia, Canada B3H 1X5,2 Agriculture and Agrifood Canada, Kentville, Nova Scotia, Canada B4N 1J5,3 National Research Council of Canada—Institute for Marine Biosciences, Halifax, Nova Scotia, Canada B3H 3Z14

Received 13 June 2009/ Accepted 21 August 2009

Marine bacterial isolates cultured from the digestive tracts of blue mussels (Mytilus edulis) contaminated with paralytic shellfish toxins (PSTs) were screened for the ability to reduce the toxicity of a PST mixture. Seven isolates reduced the overall toxicity of the algal extract by ≥90% within 3 days. These isolates shared at least 99% 16S rRNA gene sequence similarity with five Pseudoalteromonas spp. Phenotypic tests suggested that all are novel strains of Pseudoalteromonas haloplanktis.

* Corresponding author. Mailing address: Canadian Institute of Fisheries Technology, Dalhousie University, P.O. Box 1000, Halifax, Nova Scotia, Canada B3J 2X4. Phone: (902) 494-6031. Fax: (902) 420-0219. E-mail: Tom.Gill{at}dal.ca

{triangledown} Published ahead of print on 28 August 2009.

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

Applied and Environmental Microbiology, November 2009, p. 6919-6923, Vol. 75, No. 21
0099-2240/09/$08.00+0     doi:10.1128/AEM.01384-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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