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Applied and Environmental Microbiology, July 2001, p. 3299-3303, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3299-3303.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

True Chemotaxis in Oxygen Gradients of the Sulfur-Oxidizing Bacterium Thiovulum majus

Roland Thar* and Tom Fenchel

Marine Biological Laboratory, University of Copenhagen, 3000 Helsingør, Denmark

Received 4 December 2000/Accepted 2 May 2001

Observations of free-swimming Thiovulum majus cells show that these bacteria exhibit a phobic response as well as true chemotaxis in oxygen gradients. Both phenomena of their chemotactic behavior are integrated into a single model of helical klinotaxis, which is demonstrated by computer simulations.

* Corresponding author. Mailing address: Marine Biological Laboratory, University of Copenhagen, Strandpromenaden 5, 3000 Helsingør, Denmark. Phone: 45 49 21 33 44. Fax: 45 49 26 11 65. E-mail: roland.thar{at}gmx.net.

Applied and Environmental Microbiology, July 2001, p. 3299-3303, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3299-3303.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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