Abstract
Sapwood blocks of lime (Tilia vulgaris) and pine (Pinus sylvestris) placed to one side of growing colonies of several wood decay fungi markedly influenced their hyphal extension patterns, particularly by causing positive or negative tropic responses. A method was devised to measure and quantify these responses and analyse them statistically. Chemotropic responses were demonstrated by Chaetomium globosum, Trichoderma viride, Serpula lacrymans and Coniophora puteana in the presence of air-dried and heat-dried wood but not by Coriolus versicolor or Humicola grisea. The implications of chemotropism as a factor influencing the invasion and colonization of wood are discussed.
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