The change of the content and composition of the chitin-glucan complex (CGC) of the ascomycete Aspergillus niger during its development has been studied. In submerged mycelium, the complex is dominated by glucan, whereas chitin is predominant in sporophores and spores. The highest CGC content has been noted in sporophores in the terminal phase and in submerged mycelium in the idiophase; i.e., before the formation of dormant cells. On the grounds of the correlation of the content and composition of lipids, protecting carbohydrates, and CGC, it is suggested that cell wall structural polysaccharides are involved in biochemical adaptation to adverse factors.
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