Development of Phanerochaete velutina mycelial cord systems: effect of encounter of multiple colonised wood resources

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Abstract
The effect of decay and presence of fungi, in combinations of wood resources, on the foraging behaviour of the saprotrophic cord-forming fungus Phanerochaete velutina was examined. P. velutina was affected by both resource decay state and the presence of other wood decay species within the resource, and preferentially colonised resources offering an easy prospect of successful colonisation and high nutrient availability. Partially decayed resources which had been autoclaved were preferentially colonised, probably due to the availability of nutrients released by the death of the precolonising fungus and lack of competition/combat. The presence of a viable and long-established precolonising species within the resource made it ‘unattractive’. Some precolonising fungi (e.g. Xylaria polymorpha) were better able to resist an attack by P. velutina than others (e.g. Bjerkandera adusta).

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