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Journal of Bacteriology, July 2007, p. 4969-4972, Vol. 189, No. 13
0021-9193/07/$08.00+0     doi:10.1128/JB.00289-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Quorum Sensing Regulates Denitrification in Pseudomonas aeruginosa PAO1{triangledown}

Masanori Toyofuku,{dagger} Nobuhiko Nomura,{dagger}* Tatsuya Fujii, Naoki Takaya, Hideaki Maseda,{ddagger} Isao Sawada,§ Toshiaki Nakajima, and Hiroo Uchiyama

Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan

Received 24 February 2007/ Accepted 16 April 2007

Anaerobic growth of Pseudomonas aeruginosa PAO1 was affected by quorum sensing. Deletion of genes that produce N-acyl-L-homoserine lactone signals resulted in an increase in denitrification activity, which was repressed by exogenous signal molecules. The effect of the las quorum-sensing system was dependent on the rhl quorum-sensing system in regulating denitrification.

* Corresponding author. Mailing address: Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan. Phone: 81-29-853-6627. Fax: 81-29-853-6627. E-mail: nomunobu{at}sakura.cc.tsukuba.ac.jp

{triangledown} Published ahead of print on 20 April 2007.

{dagger} M.T. and N.N. contributed equally to this study.

{ddagger} Present address: Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan.

§ Present address: Institute of Wood Technology, Akita Prefectural University, 11-1 Kaieisaka, Noshiro, Akita 016-0876, Japan.

Journal of Bacteriology, July 2007, p. 4969-4972, Vol. 189, No. 13
0021-9193/07/$08.00+0     doi:10.1128/JB.00289-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Toyofuku, M., Nomura, N., Kuno, E., Tashiro, Y., Nakajima, T., Uchiyama, H. (2008). Influence of the Pseudomonas Quinolone Signal on Denitrification in Pseudomonas aeruginosa. J. Bacteriol. 190: 7947-7956 [Abstract] [Full Text]  
  • Yawata, Y., Nomura, N., Uchiyama, H. (2008). Development of a Novel Biofilm Continuous Culture Method for Simultaneous Assessment of Architecture and Gaseous Metabolite Production. Appl. Environ. Microbiol. 74: 5429-5435 [Abstract] [Full Text]  


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