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Applied and Environmental Microbiology, March 1999, p. 1340-1342, Vol. 65, No. 3
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Glycine Betaine: Reserve Form of Choline in Penicillium fellutanum in Low-Sulfate Medium

Yong-Il Park,dagger Marian L. Buszko, and John E. Gander*

Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida 32611-0700

Received 17 September 1998/Accepted 11 December 1998

In spite of choline's importance in fungal metabolism, its sources in cytoplasm have not been fully established. 13C nuclear magnetic resonance analysis of mycelial extracts from day-5 Penicillium fellutanum cultures showed that, as well as choline-O-sulfate, intracellular glycine betaine is another reserve form of choline, depending on the availability of sulfate in the culture medium. These observations are discussed relative to the multiple roles of choline and its precursors in P. fellutanum.

* Corresponding author. Present address: 4219 Rancho Grande Place NW, Albuquerque, NM 87120-5337. Phone: (505) 898-4128. E-mail: jegander01{at}uswest.net.

dagger Present address: Department of Biology, Johns Hopkins University, Baltimore, MD 21218-2685.

Applied and Environmental Microbiology, March 1999, p. 1340-1342, Vol. 65, No. 3
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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