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PHOSPHOLIPIDS IN VEGETATIVE CELLS AND SPORES OF BACILLUS POLYMYXA¹

Department of Bacteriology, Iowa State University of Science and Technology, Ames, Iowa
Department of Dairy and Food Industry, Iowa State University of Science and Technology, Ames, Iowa

ABSTRACT

MATCHES, JACK R. (Iowa State University of Science and Technology, Ames), HOMER W. WALKER, AND JOHN C. AYRES. Phospholipids in vegetative cells and spores of Bacillus polymyxa. J. Bacteriol. 87:16–23. 1964.—The same types of phospholipids were recovered from both vegetative cells and spores of Bacillus polymyxa 1A39. Nitrogen-containing phospholipids were identified as phosphatidyl ethanolamine, lysophosphatidyl ethanolamine, lysophosphatidyl serine, and lysolecithin. Acidic phosphatides containing no nitrogen were identified as phosphatidic acid, phosphatidyl glycerol, and a fraction appearing to be bis (phosphatidic) acid. The major phosphatide fraction in both cells and spores was phosphatidyl ethanolamine. Smaller amounts of phosphatidyl glycerol and bis (phosphatidic) acid were present; the other acidic phospholipid components were present only in trace amounts. Heat resistance of the spore as compared to the vegetative cell could not be attributed to a specific phospholipid, since no difference in the type of phospholipids present was observed.

² Present address: College of Fisheries, University of Washington, Seattle.

¹ Journal Paper no. J-4680 of the Iowa Agricultural and Home Economics Experiment Station, Ames Project no. 1393, Center for Agricultural and Economic Development cooperating. Part of this work was submitted by the senior author in partial fulfillment of the requirements for the Ph.D. degree.