Abstract
Hyphal wall compositions of six Leptosphaeria species were compared to assess whether gross changes have occurred in the hyphal wall chemistry of closely related fungi which have become ecologically restricted to marine or terrestrial habitats. Unfractionated, lipid-extracted hyphal walls of each Leptosphaeria species had qualitatively identical compositions consisting of glucose, mannose, galactose, glucosamine, amino acids, and traces of galactosamine. Quantitative analyses showed that the hyphal wall components varied from species to species. Qualitative compositions of alkali-soluble wall fractions from each species were identical and contained the same sugars found in the unfractionated walls. The alkali-insoluble residues contained glucose, glucosamine, and amino acids. The alkali-soluble fractions were composed predominantly of glucose, galactose, and mannose. The alkali-insoluble fractions contained high concentrations of glucose and glucosamine and relatively low concentrations of amino acids.
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Selected References
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