Parasitism ofTrichodermaspp. onRhizoctonia solaniandSclerotium rolfsii-- Scanning Electron Microscopy and Fluorescence Microscopy

Elad, Y., Chet, 1., Boyle, P., and Henis, Y. 1983. Parasitism of Trichoderma spp. on Rhizoctonia so/ani and Sclerotium rolfsii- Scanning e lectron microscopy and nuorescence microscopy. Phytopathology 73:85-88. Hypha! interactions between either Trichoderma harzianum or T. hamawm, and Sclerotium rolfsii or Rhizoctonia so/ani were observed by scanning electron microscopy. Trichoderma spp. auached to the host either by hypha! coils, hooks, or appressoria. Lysed sites and penetration holes were found in hyphae of the plant pathogenic fungi, following reinoval of parasitic hyphae. High 13-(1 ,3) glucanase and chitinase activities were detected in dual agar cultures when 1: harzianum parasitized S. rolfsii,