Some Factors Affecting the Growth and Sporulation of Chaetomium globosum and Memnoniella echinata

Abstract

The influence of certain carbohydrates, N compounds and accessory substances on the growth and sporulation of C. globosum and M. echinata was studied. It was confirmed that M. echinata needs an external supply of biotin, which has also a slight effect on the growth of C. globosum. For C. globosum, a very low level of soluble sugar in the medium was essential for the production of perithecia. With adequate biotin, M. echinata sporulated in the presence of considerable concns. of sugar, but at low biotin levels no sporulation occurred until soluble sugar approached exhaustion. Jute (Corchorus capsularis) extract stimulated growth and accelerated sporulation of C. globosum this was not due to the presence in the extract of any of 9 well-known B-group vitamins. Jute extract had no more influence on M. echinata than would be due to its biotin content.