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J Bacteriol. 1968 June; 95(6): 1979-1986
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Correlation Between Spore Structure and Spore Properties in Bacillus megaterium

¹ Department of Microbiology, The University of Texas, Austin, Texas 78712

ABSTRACT

The spores of six strains of Bacillus megaterium were divided into two distinct groups on the basis of germination. Three of the strains germinated in a mixture of L-alanine and inosine (AL type spores), and three strains germinated in a mixture of glucose and potassium nitrate (GN type spores); recriprocal germination in the respective solutions did not occur. The AL spores and the GN spores were morphologically distinct. Other differences between the two spore groups included germination inhibition characteristics, dipicolinic acid content, hexosamine content, phosphorus and magnesium content, spore coat features, ion exchange properties, and heat resistance. A correlation appears to exist between spore morphology and certain other spore properties in strains of B. megaterium.