Degradation of Extracellular β-(1,3)(1,6)- d -Glucan by Botrytis cinerea

Abstract
During growth on glucose, Botrytis cinerea produced extracellular β-(1,3)(1,6)- d -glucan (cinerean), which formed an adhering capsule and slime. After glucose was exhausted from the medium, cinereanase activity increased from B. cinerea was found to grow on cinerean with the latter as its single carbon and energy source. In this case, cinerean degradation occurred during hyphal growth, and no microconidiation or sclerotium formation was observed. Growth experiments with various carbon sources indicated that cinerean had a positive effect on the formation of cinerean-degrading enzymes.

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