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Bulbs mycoflora and their relation with three stored product mites

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Abstract

The distribution of moulds on stored and field onion and garlic plants infested by bulb mites in Assiut area (Egypt) was studied using PDA medium at 28 °C. Among 40 host samples and the three mite species tested no significant difference was noted in the contamination by moulds. A total of 20 species appertaining to 11 genera were identified from the tested mites and their habitats. The predominant moulds on all samples were “storage moulds” from the genera Aspergillus (A. niger, A. versicolor)and Penicillium (P. chrysogenum, P. funiculosum,and ``field moulds'' among which Alternaria, Cladosporium,Fusarium (and its teleomorphs) and Setosphaeria were encountered most frequently. One fungus well known facultative pathogen was obtained: Beauveria bassiana. The tested mites transferA. niger, N. haematococca, R. stolonifer andP. chrysogenum outside their bodies while, A. flavusand A. ochraceus transfer through their digestive tracts along with the foods. Individuals of all mites could survived till the end of the experiment on all fungal species tested except A. niger, A. ochraceus and A. sydowii.Among 48 isolates screened for their ability to produce chitinase, about 83% of the isolates could produce this enzyme. Most of the positive isolates (17 isolates) had moderate producers

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Authors and Affiliations

  1. Botany Department, Faculty of Science, Assiut University, Assiut, Egypt

    M.A. Abdel-Sater

  2. Plant ProtectionDepartment, Faculty of Agriculture, Assiut University, Assiut, Egypt

    S.A. Eraky

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  1. M.A. Abdel-Sater
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  2. S.A. Eraky
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Abdel-Sater, M., Eraky, S. Bulbs mycoflora and their relation with three stored product mites. Mycopathologia 153, 33–39 (2002). https://doi.org/10.1023/A:1015263932149

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