The Influence of Hexose Phosphates, Calcium and Jute Extract on the Formation of Perithecia by Chaetomium gfobosum

SUMMARY: Chromatographic examination of an aqueous extract of jute showed the presence of inorganic phosphate, glucose-6-phosphate, fructose-1: 6-diphosphate and calcium ion. A mixture of the last three in the amounts estimated to be present in the jute extract stimulated early and vigorous formation of perithecia of Chaetomium globosum in the same manner as does jute extract, although the amount of vegetative growth was appreciably less. No indication of the presence of a specific ‘fruiting factor ’ was obtained. The addition of a small amount of an aqueous extract of jute to a Czapek-Dox medium containing 0.5 yo glucose was shown by Buston & Basu (1948) t