ROLE OF CARBON DIOXIDE IN THE CONTROL OF FRUITING OF SCHIZOPHYLLUM COMMUNE

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Abstract
Compatible matings of Schizophyllum commune carried out in sealed chambers showed good vegetative growth and clamp-connection formation but fruiting was markedly inhibited. This inhibition was reversed by either aeration or the inclusion of alkali in the chambers. These phenomena occurred on a defined medium, with glucose as the primary carbon source, and were dependent on the level of carbohydrate employed. Gas mixtures of air-CO2 (955) severely restricted the fruiting process when applied during mating or before the formation of fruit-body primordia. It is proposed that respiratory CO2 plays an important role in the regulation of form of S. commune.