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Research Letter
Effect of abiotic factors on the unique glitter-like iridescence of Cellulophaga lytica
Article first published online: 27 JUN 2012
DOI: 10.1111/j.1574-6968.2012.02614.x
© 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved
Additional Information
How to Cite
Kientz, B., Marié, P. and Rosenfeld, E. (2012), Effect of abiotic factors on the unique glitter-like iridescence of Cellulophaga lytica. FEMS Microbiology Letters, 333: 101–108. doi: 10.1111/j.1574-6968.2012.02614.x
Publication History
- Issue published online: 23 JUL 2012
- Article first published online: 27 JUN 2012
- Accepted manuscript online: 8 JUN 2012 07:52AM EST
- Manuscript Revised: 18 MAY 2012
- Manuscript Accepted: 18 MAY 2012
- Manuscript Received: 10 APR 2012
Funded by
- Ministère de la Recherche et de l'Enseignement Supérieur
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Keywords:
- bacterial iridescence;
- marine bacterium;
- Cellulophaga lytica;
- environmental stresses
Abstract
Iridescence is a property of structural color that has been poorly documented in the prokaryotic kingdom. We recently isolated a Cellulophaga lytica strain that exhibits, on solid media, a unique intense glitter-like iridescence in reflection. Iridescence of C. lytica CECT 8139 was optically and physically characterized but physiological significance of the phenomenon was not. In the present work, we investigated the effect of key abiotic factors on C. lytica's growth and iridescence. Special attention was paid to conditions that mimic rocky shore ecosystem, the natural biotope of C. lytica. We found that C. lytica's iridescence required the presence of seawater. The phenomenon was not influenced by light exposure or plate orientation during growth. Cellulophaga lytica's iridescence occurred under a wide range of culture conditions notably under psychrophilic, halophilic, and hydric stress conditions. Changes in colonies' colors (blue, violet, red, yellow, and green) were linked to cell density. These data indicate that iridescence is induced under conditions that mimic the natural biotope of C. lytica.