Affiliation:
1. Institute of Microbiology, Rutgers, The State University, New Brunswick, New Jersey 08903
Abstract
Unlike five other strains of
Mucor rouxii
previously studied, certain nutritional factors must be present for rapid growth and completely yeastlike development of
M. rouxii
(National Regional Research Laboratory 1894) under CO
2
; high CO
2
tensions markedly inhibit growth of this strain. Addition of yeast extract, peptone, or enzymatically hydrolyzed casein in substrate amounts to a basal medium (containing acid-hydrolyzed casein) completely relieved CO
2
inhibition of growth and permitted yeastlike development. The “CO
2
growth factor” activity of these supplements proved to be dialyzable and acid labile. These findings, together with the results of gel filtration and amino acid analysis, suggested that CO
2
growth factor activity can be attributed to small peptides.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Cited by
28 articles.
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