Interactions between Saprotrophic Basidiomycetes and Bacteria

Wietse de Boer and Annemieke van der Wal

Contents 1. Introduction 144

1.1 Wood-Inhabiting Bacteria 144

1.2 Competitive and Antagonistic Interactions 144

1.3 Predation, Parasitism and Disease 146

1.4 Mutualistic Interactions 147

1.5 Endobacteria 149

1.6 Specific Associations 150

1.7 Practical Applications 150 2. Conclusions and Perspectives 151 References 151


Bacteria play an important role in the functioning of lignocellulose-degrading basidiomycetes. They can have a negative effect on fungal growth and activity as they are potential competitors for low-molecular weight compounds released by extracellular fungal enzymes. There are also some indications of bacterial mycophagy. On the other hand, basidiomycetes may benefit from the presence of bacteria, in particular with respect to nitrogen supply and detoxification of mycotoxic compounds.

During degradation of wood by basidiomycetes, the environmental conditions become very selective for bacteria because of rapid and strong acidification, production of reactive oxygen species and the presence of toxic fungal secondary metabolites. The bacteria that survive these conditions must have special properties, but research on this is still in its infancy. A better knowledge of the interactions between saprotrophic basidio-mycetes and bacteria is not only important from a basic scientific point of view, but will also open up possibilities for new applications in wood conservation and the discovery of metabolites with medical therapeutic value.

British Mycological Society Symposia Series Published by Elsevier Ltd.

r 2008 The British Mycological Society All rights reserved.

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