Effects of nutrient status and water potential of media on fungal growth and antagonist‐pathogen interactions1
- 1 December 1987
- journal article
- Published by Wiley in EPPO Bulletin
- Vol. 17 (4) , 581-591
- https://doi.org/10.1111/j.1365-2338.1987.tb00078.x
Abstract
The effect of tap water, soil extract and potato dextrose agars and a range of different water potentials on the growth and interactions of the pathogens Sclerotinia sclerotiorum, Botrytis cinerea and Rhizoctonia solani, and the antagonists Coniothyrium minitans and Gliocladium roseum were investigated. Different media had significant effects on growth rates of all fungi, but PDA, the medium richest in available carbon, did not always give the maximum growth rate for all fungi. Growth rates gradually declined for most fungi with decreasing water potential but the rate of decline was different for each fungus and was dependent upon both medium and osmoticum used. Colony morphology and pathogen‐antagonist interaction also changed with decreasing water potential and media. Production of volatile and non‐volatile antibiotics was also dependent upon the media used. The relevance of these results to screening methods is discussed.Keywords
This publication has 17 references indexed in Scilit:
- Occurrence and role of Gliocladium roseum in field-grown soybeans in IllinoisTransactions of the British Mycological Society, 1986
- Comparison of interactions between Ceratocystis ulmi and elm bark saprobes in vitro and in vivoTransactions of the British Mycological Society, 1986
- Aspects of antagonism by the mycoparasite Pythium oligandrumTransactions of the British Mycological Society, 1984
- Antagonists and parasites of Rhizoctonia solani and their efficacy in reducing stem canker of potato under controlled conditionsTransactions of the British Mycological Society, 1984
- Biological control of Sclerotinia sclerotiorum on aerial parts of plants by the hyperparasite Coniothyrium minitansTransactions of the British Mycological Society, 1982
- On Coniothyrium minitans and its parasitism of Sclerotinia speciesTransactions of the British Mycological Society, 1976
- Colony interactions and hyphal interference between Septoria nodorum and phylloplane fungiTransactions of the British Mycological Society, 1976
- Antagonistic properties of species-groups of TrichodermaTransactions of the British Mycological Society, 1971
- Antagonistic properties of species-groups of TrichodermaTransactions of the British Mycological Society, 1971
- Antagonistic properties of species-groups of TrichodermaTransactions of the British Mycological Society, 1971