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Botrytis cinerea resistant to captan: The effect of inoculum age and type on response to the fungicide
Year:
1984
Authors :
Barak, Eran
;
.
Volume :
6
Co-Authors:
Barak, E., Department of Environmental Biology, University ofGuelph, Guelph, ON, NIG2WI, Canada
Edgington, L.V., Department of Environmental Biology, University ofGuelph, Guelph, ON, NIG2WI, Canada
Facilitators :
From page:
211
To page:
214
(
Total pages:
4
)
Abstract:
Isolates of Botrytis cinerea with stable resistance to captan but which otherwise were similar to the wild type in pathogenicity to strawberry and apple fruits were obtained from various crops that had been regularly treated with captan. The concentration of captan needed for 50% inhibition of growth of the resistant isolates was 2 to 13 times greater than that for the sensitive type. The resistance of the isolates to the fungicide was tost when mycelium, conidia, and sclerotia were aged in culture for about 3 weeks. This loss of resistance was reversible, with the original response to captan being regained after the isolates were subcultured and grown for a week on potato dextrose agar. The possible role of nonessential thiols in the development of resistance to captan and the loss of such thiols upon aging of the fungus is discussed. Ways to improve control of B. cinerea with captan are considered. © Taylor & Francis Group, LLC.
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DOI :
10.1080/07060668409501553
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
18997
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:25
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Scientific Publication
Botrytis cinerea resistant to captan: The effect of inoculum age and type on response to the fungicide
6
Barak, E., Department of Environmental Biology, University ofGuelph, Guelph, ON, NIG2WI, Canada
Edgington, L.V., Department of Environmental Biology, University ofGuelph, Guelph, ON, NIG2WI, Canada
Botrytis cinerea resistant to captan: The effect of inoculum age and type on response to the fungicide
Isolates of Botrytis cinerea with stable resistance to captan but which otherwise were similar to the wild type in pathogenicity to strawberry and apple fruits were obtained from various crops that had been regularly treated with captan. The concentration of captan needed for 50% inhibition of growth of the resistant isolates was 2 to 13 times greater than that for the sensitive type. The resistance of the isolates to the fungicide was tost when mycelium, conidia, and sclerotia were aged in culture for about 3 weeks. This loss of resistance was reversible, with the original response to captan being regained after the isolates were subcultured and grown for a week on potato dextrose agar. The possible role of nonessential thiols in the development of resistance to captan and the loss of such thiols upon aging of the fungus is discussed. Ways to improve control of B. cinerea with captan are considered. © Taylor & Francis Group, LLC.
Scientific Publication
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