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| Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1982Articles/Phyto72n05_476.PDF
Last checked: 08/25/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Bruin, G. C. A.;
Edgington, L. V. |
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| Author Affiliation: | Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada |
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| Title: | Induction of fungal resistance to metalaxyl by ultraviolet irradiation |
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| Section: | Resistance
Other records with the "Resistance" Section
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| Source: | Phytopathology. Vol. 72, No. 5, May 1982, p. 476-480. |
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| Publishing Information: | Worcester, Mass. |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Fungicide resistance; Fungicides; Metalaxyl; Pythium ultimum; Ultraviolet radiation
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| Abstract/Contents: | "Three minutes of ultraviolet (UV) irradiation of a suspension containing 3 X 106 zoospores of Phytophthora capsici resulted in the development of 12 metalaxyl-resistant strains and 35 min of UV irradiation of mycelium of P. capsici and Pythium ultimum produced many resistant strains. The resistance was initially low, but a few transfers on metalaxyl-amended V-8 agar followed by 12 transfers on unamended V-8 agar resulted in a number of stable, highly resistant mutants that retained pathogenicity to their respective pea and pepper hosts. There was a high correlation between resistance expressed in vitro and in vivo. Resistance to metalaxyl was coupled with resistance to furalaxyl, Galben, milfuram, RE26745, and RE26940. UV irradiation of 1.05 X 108 spores of Peronospora parasitica yielded no resistant strains. Large differences in levels of metalaxyl sensitivity among single zoospore isolates of P. capsici were demonstrated and may indicate the coexistence of metalaxyl-'sensitive' and 'resistant' nuclei in the coenocytic mycelium." |
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| Language: | English |
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| References: | 13 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bruin, G. C. A., and L. V. Edgington. 1982. Induction of fungal resistance to metalaxyl by ultraviolet irradiation. Phytopathology. 72(5):p. 476-480. |
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| Web URL(s):
http://www.apsnet.org/publications/phytopathology/backissues/Documents/1982Articles/Phyto72n05_476.PDF
Last checked: 08/25/2010
Requires: PDF Reader |
| 
MSU catalog number: SB 599 .P48 |
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