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| DOI: | 10.1094/PHYTO-95-0632 |
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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdfplus/10.1094/PHYTO-95-0632
Last checked: 08/25/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Parnell, S.;
Gilligan, C. A.;
van den Bosch, F. |
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| Author Affiliation: | Parnell and van den Bosch: Biomathmatics, Rothmasted Research, Harpenden, United Kingdom; Gilligan: Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom. |
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| Title: | Small-scale fungicide spray heterogeneity and the coexistience of resistant and sensitive pathogen strains |
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| Section: | Analytical and theoretical plant pathology
Other records with the "Analytical and theoretical plant pathology" Section
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| Source: | Phytopathology. Vol. 95, No. 6, June 2005, p. 632-639. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Fungicides; Fungicide resistance; Pathogens; Strain; Density; Models
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| Abstract/Contents: | "Empirical evidence indicates that fungicide-resistant and sensitive strains can coexist for prolonged periods. Coexistence has important practical implications, for example, for the posttreatment recovery of sensitivity and consequently the life expectancy of fungicide products. Despite this, the factors influencing coexistence remain relatively unexplored. Ecological studies have shown that environmental heterogeneity can facilitate the coexistence of different species and subspecific groups. Here we use a simple differential equation model and show that fungicide spray heterogeneity per se is not sufficient for the coexistence but that the outcome depends crucially on the competitive relationship between resistant and sensitive strains. The model incorporates the competition between resistant and sensitive pathogen strains for a limited supply of suceptible host tissue on a crop which has received an incomplete coverage of fungicide. We use a combination of invasibility analysis and model simulations to explore the conditions under which coexistance can occur. We further show that the maximum density of healty host tissue is realized when resistant and sensitive pathogen strains coexist. A set of key influencing parameters are identified and analyzed, and the consequences of the results for diesase and resistance management are discussed." |
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| Language: | English |
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| References: | 34 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Parnell, S., C. A. Gilligan, and F. van den Bosch. 2005. Small-scale fungicide spray heterogeneity and the coexistience of resistant and sensitive pathogen strains. Phytopathology. 95(6):p. 632-639. |
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| DOI: 10.1094/PHYTO-95-0632 |
| Web URL(s):
http://apsjournals.apsnet.org/doi/pdfplus/10.1094/PHYTO-95-0632
Last checked: 08/25/2010
Requires: PDF Reader |
| 
MSU catalog number: SB 599 .P48 |
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