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A Comparative Physiological Study of Certain Members of the Genus, Cellulomonas¹

ABSTRACT

Physiological studies were made of six species of the genus Cellulomonas; namely, C. aurogenes, C. biazotea, C. flavigena, C. gelida, C. rossica, and C. subalbus. Differences in the ability to grow at 37° C. and in lysozyme susceptibility were shown. The proteolytic abilities varied from C. rossica which could utilize only gelatin to C. flavigena which digested eight protein substrates. Dehydrogenase and oxygen uptake studies with 17 substrates indicated the greatest differences in utilization of the salts of citric, succinic, and alpha ketoglutaric acids. Rapid utilization of these by C. flavigena, C. rossica and C. biazotea indicated the probable presence of Kreb's cycle of oxidative metabolism in these organisms.

¹ Contribution No. 303, Department of Bacteriology, Kansas Agr. Exp. Sta., Manhattan.

² Portion of dissertation presented by the senior author as partial fulfillment of the requirements for the degree Doctor of Philosophy at Kansas State College present address—Veterans Hospital, Grand Island, Nebraska.

³ Bacterial physiologist, Kansas Agr. Exp. Sta.

Received for publication July 29, 1955.