Interactions of soil fungi on cellulose film

摘要: A simple cultural method whereby pieces of cellulose film are laid on sand saturated with mineral salt solution was used to study interactions soil fungi. These were inoculated the in pairs about o·8 cm. apart, or singly at one end. Pythium oligandrum non-cellulolytic. It grown opposite six isolates fungi differing cellulolytic capacities. grew well association Botryotrichum piluliferum, Fusarium culmorum and F. oxysporum , very poorly Stachybotrys atra Trichoderma viride not all Rhizoctonia solani . The species studied pairs; R. most powerfully but S. competitive. Individual competitive characteristics led dominance fungus over another any given pair; activity secondary this. ultimum P. debaryanum also non-cellulolytic species, stimulated develop by both these Numerical estimates made reproductive bodies alone advantages using discrete conventional agar media studying discussed. ecological status is considered. spiny-spored forms include pathogens sugar fungi; may be understood original sense Burges, parasitic cellulose-decomposing smooth-spored latter sense. Emphasis upon specificity interactions.