Biodégradation et humification. IV. Microorganismes intervenant dans la décomposition des cellules d'Aureobasidium pullulans (De Bary) Arnaud

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Abstract
We have studied the biodegradation of melanized cells of Aureobasidium pullulans by electron microscopy. There is no difference after 6 months and 1 year of incubation.This study provides evidence for the removal of cell components, enzymatic lysis of cell wall, and the production of black granula. The appearance of subunits as part of granula was also observed surrounding the bacteria.At the earliest stage of cell decomposition of Aureobasidium pullulans (utilization of gum), fungi are active. After 6 months, micromycetes stop their activity and the bacteria degrade the wall structures and, probably, some of these bacteria also degrade the granula.The value of various techniques used to demonstrate the decomposition stages and the role of surrounding microorganisms is discussed. [Translated by the journal]

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