Abstract
A pleiotropic mutation in Neurospora (exo-1), which confers derepression of α-amylase, glucoamylase, β-fructofuranosidase, and trehalase, appears to also affect the composition of the cell wall. Segregants resulting from the backcross of exo-1 to the wild-type strain from which it derived are altered in the ratio of galactosamine to glucosamine in hydrolysates of isolated cell walls. Conidial cell walls exhibit a marked decrease in the amount of galactosamine in both exo-1 and exo-1+ strains. Increased levels (approximately sevenfold) of amylase are found in conidia of exo-1, as compared with those of exo-1+.
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Selected References
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