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Applied and Environmental Microbiology, October 1999, p. 4701-4704, Vol. 65, No. 10
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

A Phase Variant of Azospirillum lipoferum Lacks a Polar Flagellum and Constitutively Expresses Mechanosensing Lateral Flagella

Gladys Alexandre,* René Rohr, and René Bally

Laboratoire d'Ecologie Microbienne du Sol, UMR-CNRS 5557, Université Claude Bernard Lyon-1, 69622 Villeurbanne Cedex, France

Received 14 June 1999/Accepted 15 July 1999

Flagellation of a nonswimming variant of the mixed flagellated bacterium Azospirillum lipoferum 4B was characterized by electron microscopy, and polyclonal antibodies were raised against polar and lateral flagellins. The variant cells lacked a polar flagellum due to a defect in flagellin synthesis and constitutively expressed lateral flagella. The variant cells were able to respond to conditions that restricted the rotation of lateral flagella by producing more lateral flagella, suggesting that the lateral flagella, as well as the polar flagellum, are mechanosensing.

* Corresponding author. Present address: Department of Microbiology and Molecular Genetics, Loma Linda University, Loma Linda, CA 92350. Phone: (909) 558-4480. Fax: (909) 558-4035. E-mail: galexandre{at}som.llu.edu.

Applied and Environmental Microbiology, October 1999, p. 4701-4704, Vol. 65, No. 10
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • Vial, L., Lavire, C., Mavingui, P., Blaha, D., Haurat, J., Moenne-Loccoz, Y., Bally, R., Wisniewski-Dye, F. (2006). Phase variation and genomic architecture changes in azospirillum.. J. Bacteriol. 188: 5364-5373 [Abstract] [Full Text]  
  • Stewart, B. J., McCarter, L. L. (2003). Lateral Flagellar Gene System of Vibrio parahaemolyticus. J. Bacteriol. 185: 4508-4518 [Abstract] [Full Text]  


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