Growth and production of microsclerotia of two Cylindrocladium species with various carbon and nitrogen sources

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Abstract
Galactose, glucose, maltose, and mannose supported optimum growth of Cylindrocladium scoparium in buffered liquid media. Growth of C. floridanum was maximum on cellobiose, sorbose, and xylose, but growth was only slight on maltose and galactose. Both fungi used several amino acids and grew well on peptone, ammonium nitrate, ammonium sulfate, potassium nitrate, sodium nitrate, and urea. Cylindrocladium floridanum grew well on sodium nitrite, but C. scoparium made only slight growth on this nitrogen source. Ammonium and nitrite compounds inhibited production of microsclerotia by both fungi. The fungi grew between pH 4.1 and 7.5 with optimum growth at pH 6.5. Numbers of microsclerotia produced were generally directly related to the amount of growth.

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