ABSTRACT
Mycoparasitism is the direct attack of one fungus on another and is only one of three main antagonistic interactions between microorganisms, the other two being antibiosis and competition (Chet, 1987). Trichoderma spp. are mycoparasitic biocontrol agents of several economically important plant-pathogenic fungi. Parasitism by Trichoderma spp. is destructive, causing the death of the host fungus (Barnett and Binder, 1973). There are many research reports dealing with mycoparasitism as it relates to biological control (Baker and Cook, 1974; Chet, 1987). Here we concentrate on the molecular and biochemical events involved in this phenomenon and on the cellular mechanisms of the mycoparasitic interaction.
