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Journal of Bacteriology, August 2004, p. 5547-5550, Vol. 186, No. 16
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.16.5547-5550.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Erwinia chrysanthemi O Antigen Is Required for Betaine Osmoprotection in High-Salt Media

Thierry Touzé, Renan Goude, Sylvie Georgeault, Carlos Blanco, and Sylvie Bonnassie*

Osmorégulation chez les bactéries, CNRS UMR 6026, Campus de Beaulieu, Université de Rennes I, 35042 Rennes, France

Received 5 February 2004/ Accepted 17 May 2004

Cellular components necessary for osmoprotection are poorly known. In this study we show that O antigen is specifically required for the effectiveness of betaines as osmoprotectants for Erwinia chrysanthemi in saline media. The phenotype is correlated with the inability of rfb mutant strains to maintain a high accumulation level of betaines in hypersaline media.

* Corresponding author. Mailing address: Osmorégulation chez les bactéries, CNRS UMR 6026, Université de Rennes I, Campus de Beaulieu, Av. du Général Leclerc, 35042 Rennes, France. Phone: 33-223236141. Fax: 33-223236775. E-mail: sylvie.bonnassie{at}univ-rennes1.fr.

Journal of Bacteriology, August 2004, p. 5547-5550, Vol. 186, No. 16
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.16.5547-5550.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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