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Applied and Environmental Microbiology, October 2002, p. 4809-4811, Vol. 68, No. 10
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.10.4809-4811.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Isolation of Elemental Sulfur as a Self-Growth-Inhibiting Substance Produced by Legionella pneumophila

Hiroaki Inoue,1* Genji Kawano,1 Hiromichi Nagasawa,2 and Shohei Sakuda2*

Tsukuba Research Laboratories, Aquas Corporation, Tsukuba, Ibaraki 300-2646,1 Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan2

Received 15 March 2002/ Accepted 25 July 2002

The addition of HP-20 resin to a medium could enhance the growth of Legionella species. Elemental sulfur was isolated as a self-growth-inhibiting substance produced endogenously by Legionella pneumophila from methanol extracts of the resins used to culture the bacterium. Elemental sulfur shows strong growth-inhibiting activity toward all Legionella species tested.

* Corresponding author. Mailing address for Shohei Sakuda: Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan. Phone: 81-3-5841-5133. Fax: 81-3-5841-8022. E-mail: asakuda{at}mail.ecc.u-tokyo.ac.jp.

* Corresponding author. Mailing address for Kiroaki Inoue: Tsukuba Research Laboratories, Aquas Corporation, Tsukuba Techno-park Toyosato, 4-4 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan. Phone: 81-298-47-6000. Fax: 81-298-47-6080. E-mail: h_inoue0417{at}aquas.co.jp.

Applied and Environmental Microbiology, October 2002, p. 4809-4811, Vol. 68, No. 10
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.10.4809-4811.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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