B. Papp szerk.: Studia Botanica Hungarica 34. 2003 (Budapest, 2003)

Vasas, Gizella: Investigations on macrofungi production effected by fungistasis at Pilisszentkereszt (Hungary)

but only in the early stage of their development. A protective effect is necessary until the hypha developing from the spore reaches the rhizosphere, where the stimulating effect of the root acids and the protective effect of the rhizospheric bacteria are manifested. Since the mycorrhizal connection appears at the early stage of the development of the host tree and the fruit-bodies are formed only at a certain development stage, therefore longer time is necessary for the manifestation of the protective or stimulating effect of Bacillus subtilis. In the case of wood decaying fungi the results of the treatment require also a longer period of time, since the bacteria help the process of decomposition only at its initial phase. These fungi are primary decomposers and so the selection of substrates is not so important than in the case of the secondary decomposer species. They are capable to decompose wood thanks to their high cellulase and ligninase activity. Bacillus subtilis, on the other hand, cannot decompose wood, although it provides protection against competitor organisms during the germination of spores. Acknowledgement - These investigations were supported by the Hungarian Scientific Research Fund (OTKA Nos 30665, 34664). REFERENCES DIX, N. J. and WEBSTER, J. (1994): Fungal Ecology. - Chapman and Hall, London. HUBBARD, J. P., HÁRMAN, G. E. and HADAR, Y. (1983): Effect of soil borne Pseudomonas spp. on the biological control agent Trichoderma hamatum on pea seeds. - Phytopathology 73: 655-659. LOCSMÁNDI, CS. and VASAS, G. (2001): A fungisztázis jelensége a gombák körében. Irodalmi összefoglaló. (Fungistasis in the fungal world). - Mikol. Közlem., Clusiana 40(3): 75-84. PARK, J. Y. and AGNIHOTRI, V. P. (1969): Bacterial metabolites trigger sporophore formation in Agaricus bisporus. - Nature 222: 984. VASAS, G. (1985): Telepített fenyvesek és természetes lomberdei társulások nagygombáinak vizsgálata a Bükk- és a Pilis-hegységben. - Egyetemi doktori értekezés, 119 pp. VASAS, G., BOHUS, G. and LOCSMÁNDI, CS. (1997): Gombagénbank a Magyar Természettudományi Múzeum Növénytárában. (Mushroom culture collection in the Botanical Department of the Hungarian Natural History Museum). - Mikol. Köziem., Clusiana 37(1-3): 41-54. VASAS, G., BOHUS, G. and LOCSMÁNDI, CS. (1998): Genetic resource collection of macrofungi in Hungary. - Studia bot. hung. 29: 17-34. (Received: 6 March, 2003)