FORMATION OF RAMIFIED COLONY OF FUNGUS ASPERGILLUS ORYZAE ON AGAR MEDIA

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Abstract
Ramified colonies of fungus Aspergillus oryzae have been found to grow at a low growth rate on “liquid-like” agar media with low concentrations of agar and glucose. Box-counting fractal dimensions of the individual colony branches have been found to decrease with the time of incubation. Addition of glucose solution in the interior of branched colonies has brought about the production of the hyphal filaments almost only at the apical region of the colony branches. Active growth of the ramified colonies is localized in the peripheral zone, and this growth manner implies that the fungus is exhibiting a positive exploitation.

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