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Appl Environ Microbiol, May 1998, p. 1963-1966, Vol. 64, No. 5
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Regulation of Lipid Synthesis in Bradyrhizobium japonicum: Low Oxygen Concentrations Trigger Phosphatidylinositol Biosynthesis

Yin Tang1 and Rawle I. Hollingsworth1,2,*

Departments of Biochemistry1 and Chemistry,2 Michigan State University, East Lansing, Michigan 48824

Received 27 May 1997/Accepted 7 September 1997

Lowering oxygen tension in free-living Bradyrhizobium japonicum resulted in a dramatic switch of membrane chemistry in which phosphatidylcholine, the predominant lipid in aerated cultures, was no longer synthesized and phosphatidylethanolamine became the major lipid. Besides this change, phosphatidylinositol, a typical plant lipid rarely found in bacteria, was also synthesized.

* Corresponding author. Mailing address: Department of Biochemistry, Michigan State University, East Lansing, MI 48824. Phone: (517) 353-0613. Fax: (517) 353-9334. E-mail: rih{at}argus.cem.msu.edu.

Appl Environ Microbiol, May 1998, p. 1963-1966, Vol. 64, No. 5
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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