Absence of induced resistance in Agaricus bisporus against Lecanicillium fungicola |
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Authors: | Roeland L Berendsen Niek Schrier Stefanie I C Kalkhove Luis G Lugones Johan J P Baars Carolien Zijlstra Marjanne de Weerdt Han A B Wösten Peter A H M Bakker |
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Institution: | 1. Plant-Microbe Interactions, Department of Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands 2. Molecular Microbiology, Department of Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands 3. Plant Research International, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
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Abstract: | Lecanicillium fungicola causes dry bubble disease and is an important problem in the cultivation of Agaricus bisporus. Little is known about the defense of mushrooms against pathogens in general and L. fungicola in particular. In plants and animals, a first attack by a pathogen often induces a systemic response that results in an acquired resistance to subsequent attacks by the same pathogen. The development of functionally similar responses in these two eukaryotic kingdoms indicates that they are important to all multi-cellular organisms. We investigated if such responses also occur in the interaction between the white button mushroom and L. fungicola. A first infection of mushrooms of the commercial A. bisporus strain Sylvan A15 by L. fungicola did not induce systemic resistance against a subsequent infection. Similar results were obtained with the A. bisporus strain MES01497, which was demonstrated to be more resistant to dry bubble disease. Apparently, fruiting bodies of A. bisporus do not express induced resistance against L. fungicola. |
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