Vibrio coralliilyticus search patterns across an oxygen gradient

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Date
2013-07-10
Authors
Winn, Karina
Bourne, David G
Mitchell, James Gordon
Journal Title
Journal ISSN
Volume Title
Publisher
PLOS One
Rights
2013 Winn et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Rights Holder
Copyright (C) 2013 Winn et al.
Abstract
The coral pathogen, Vibrio coralliilyticus shows specific chemotactic search pattern preference for oxic and anoxic conditions, with the newly identified 3-step flick search pattern dominating the patterns used in oxic conditions. We analyzed motile V. coralliilyticus cells for behavioral changes with varying oxygen concentrations to mimic the natural coral environment exhibited during light and dark conditions. Results showed that 3-step flicks were 1.4× (P = 0.006) more likely to occur in oxic conditions than anoxic conditions with mean values of 18 flicks (95% CI = 0.4, n = 53) identified in oxic regions compared to 13 (95% CI = 0.5, n = 38) at anoxic areas. In contrast, run and reverse search patterns were more frequent in anoxic regions with a mean value of 15 (95% CI = 0.7, n = 46), compared to a mean value of 10 (95% CI = 0.8, n = 29) at oxic regions. Straight swimming search patterns remained similar across oxic and anoxic regions with a mean value of 13 (95% CI = 0.7, n = oxic: 13, anoxic: 14). V. coralliilyticus remained motile in oxic and anoxic conditions, however, the 3-step flick search pattern occurred in oxic conditions. This result provides an approach to further investigate the 3-step flick.
Description
Keywords
Microbiology, Oxygen, Cell motility
Citation
Winn, K.W., Bourne, D.G. and Mitchell, J.G., 2013. Vibrio coralliilyticus search patterns across an oxygen gradient. PLoS One 8(7): e67975.