1887

Abstract

The growth of colonies of and on solid media in plate cultures was studied. When grown on defined media containing 10–50 m-glucose, did not cause a significant reduction in the glucose concentration of the medium in advance of colonization, but did cause the formation of a steep glucose concentration gradient in the substrate below the colony; the medium directly below the centre of a 7 cm diameter colony of was exhausted of glucose even when the fungus was grown on medium containing 50 m-glucose. Penicillin produced by colonies of accumulated in the medium in advance of fungal colonization. For a period up to about 18 d after inoculation, the concentration of penicillin in the medium throughout the plate increased with colony development and thereafter, except at the margins of the plate, decreased.

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/content/journal/micro/10.1099/00221287-133-2-361
1987-02-01
2022-01-16
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