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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Wu, C.;
Hsiang, T. |
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| Author Affiliation: | Department of Environmental Biology, University of Guelph, Guelph, Ontario |
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| Title: | Mechanisms involved in biological control of grey snow mould of turfgrass with Typhula phacorrhiza |
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| Meeting Info.: | APS Annual Meeting, August 9-13, 1997, Rochester, New York |
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| Source: | Phytopathology. Vol. 87, No. 6, June 1997, p. S104-S105. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Biological control; Disease control; Typhula blight; Typhula phacorrhiza; Typhula ishikariensis; Typhula incarnata; Biological control organisms; Competition
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| Abstract/Contents: | "In three years of field studies, we have found that biological control of grey snow mold caused by Typhula ishikariensis (Tish) or T. incarnata (Tinc) can be obtained by applying T. phacorrhiza (Tp) onto turf. The mode of suppression has not been previously elucidated. In laboratory experiment, we found that parasitism was not involved in the interaction between Tp and either Tish or Tinc. Using the cellophane membrane technique, we found that mutual inhibition was common in all combinations between Tp, Tish and Tinc, but we could not detect the presence of any antibiotics or staling products in liquid cell-free extracts, and in modified dual culture. Studies of population dynamics from all dual combinations of the three Typhula species on turf thatch medium suggested that Tp was more competitive than Tinc, and Tish was the least competitive. We conclude that competition for nutrient/space plays a major role in grey snow mold disease suppression by Tp. More studies are needed to determine the substrate/site for which these organisms compete, and other possible mechanisms such as induced resistance." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wu, C., and T. Hsiang. 1997. Mechanisms involved in biological control of grey snow mould of turfgrass with Typhula phacorrhiza. Phytopathology. 87(6):p. S104-S105. |
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