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J Bacteriol. 1965 July; 90(1): 147-150
Copyright © 1965 American Society for Microbiology. All Rights Reserved.

Polymer-Producing Species of Arthrobacter

^a Northern Regional Research Laboratory, Northern Utilization Research and Development Division, Agricultural Research Service, U.S. Department of Agriculture, Peoria, Illinois

ABSTRACT

GASDORF, HELEN J. (Northern Regional Research Laboratory, Peoria, Ill.), R. G. BENEDICT, M. C. CADMUS, R. F. ANDERSON, AND R. W. JACKSON. Polymer-producing species of Arthrobacter. J. Bacteriol. 90:147–150.1965.—Two slime-producing microorganisms, designated as NRRL B-1973 and NRRL B-1797, were isolated from a Guatemalan soil sample. Their morphological and physiological characteristics permit their assignment to the genus Arthrobacter. Both cultures produce a large amount of extracellular polysaccharide, the maximal amount being 1.4 g per 3 g of glucose. The carbohydrate constituents of B-1973 polysaccharide are galactose, glucose, and mannuronic acid; those of B-1797 are galactose, glucose, and glucuronic acid. The organisms are morphologically and physiologically alike. The differences between these two cultures and previously described species of Arthrobacter appear sufficient to designate a new species. The name Arthrobacter viscosus sp. n. is proposed.

¹ Present address: College of Pharmacy, University of Washington, Seattle.

² International Minerals and Chemicals Corp., Wasco, Calif.