The effect of diffusible metabolites of Trichoderma harzianum on in vitro interactions between basidiomycete isolates at two different temperature regimes

Autor: Magnus Schoeman, David J. Dickinson, Joan Webber
Rok vydání: 1996
Předmět:
Zdroj: Mycological Research. 100:1454-1458
ISSN: 0953-7562
DOI: 10.1016/s0953-7562(96)80077-3
Popis: As part of a study aimed at developing a biological control of decay in freshly felled pine the action of Trichoderma harzianum on the interactions between target decay basidiomycetes was investigated. An in vitro bilayer system allowed the action of the mould's diffusible metabolites, as distinct from the other modes of antagonism, to be studied. Seven basidiomycete isolates, representing commonly found decay fungi in pine, were challenged against each other in the presence of Trichoderma metabolites and also on control (uninoculated) bilayers. Challenges were carried out at two temperatures, 10° and 22 °C. Both temperature and the presence of Trichoderma influenced the outcome of the interactions seen on the bilayers. Temperature had a marked effect on some of the challenges for instance switching a deadlock interaction to overgrowth of one individual by the other. Similarly, the same challenge could have contrasting outcomes depending on whether the interaction occurred on Trichoderma or control bilayers. The relevance of the results to biological control of wood decay is discussed.
Databáze: OpenAIRE