Aspergillus fumigatus and aspergillus niger in two potted ornamental plants, cactus (epiphyllum truncatum) and clivia (clivia miniata). Biological and epidemiological aspects

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Abstract
The presence and growth of Aspergillus fumigatus and Aspergillus niger in the soil of ornamental plants have been demonstrated. The ecological conditions in the soil of such plants as influenced by temperature, humidity, desiccation, fertilization and ventilation obviously influence such fungal growth. The epidemiological significance of these findings is of interest with a view to the present efforts to control aspergillosis in the environment of susceptible persons. Observations of a preferential growth of certain Aspergillus species in the soil of defined plants under defined conditions raise problems of soil microbiology.