Water Relations of Xerophilic Fungi Isolated from Prunes
| Autor: | John I. Pitt, J. H. B. Christian |
|---|---|
| Rok vydání: | 1968 |
| Předmět: |
General Immunology and Microbiology
Ecology fungi Food spoilage Aspergillus glaucus Asexual sporulation Articles General Medicine Biology biology.organism_classification General Biochemistry Genetics and Molecular Biology Incubation period Horticulture Sexual sporulation Germination General Pharmacology Toxicology and Pharmaceutics Incubation Chrysosporium |
| Zdroj: | Applied Microbiology. 16:1853-1858 |
| ISSN: | 0003-6919 |
| DOI: | 10.1128/am.16.12.1853-1858.1968 |
| Popis: | The predominant spoilage fungi of dried and high-moisture prunes were members of the Aspergillus glaucus group and Xeromyces bisporus. Chrysosporium spp. were also important. At the mean p H of prune flesh (3.8) and at 25 C, X. bisporus grew at water activities (a w ) down to 0.605, and Chrysosporium fastidium grew to 0.686. Germination was always followed by growth, but within the 120-day incubation period, the minimum a w permitting asexual sporulation was usually higher than that permitting germination. Sexual sporulation often required an even higher a w . The water requirements of aspergilli were appreciably greater at this p H than near neutrality, no species germinating below 0.738 a w . This was probably a consequence of a high spore-death rate during incubation at low a w and p H. |
| Databáze: | OpenAIRE |
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