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Apparent degradation of pyrimethanil by Botrytis cinerea and other fungi on agar plates is caused by migration of the fungicide within the agar medium

Apparent degradation of pyrimethanil by Botrytis cinerea and other fungi on agar plates is caused... Apparent degradation of pyrimethanil was observed when a number of fungal pathogens were grown on Tinlines Minimal medium supplemented with the fungicide Scala. Degradation was suspected after development of a zone of clearing around the site of inoculation on agar plates indicated disappearance of the fungicide. Once cleared, fungal growth occurred within the zone. Gas Chromatography/Mass Spectrometry analysis of extracts from agar plates that had been colonised by Botrytis cinerea Pers. and other fungi indicated that the fungicide had not been degraded, but had concentrated at the edges of the Petri dish away from the point of growth. The physical basis of this fungicide mobility within the agar medium cannot be explained but is presumably due to metabolic activity of the growing fungal mycelium. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Apparent degradation of pyrimethanil by Botrytis cinerea and other fungi on agar plates is caused by migration of the fungicide within the agar medium

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References (8)

Publisher
Springer Journals
Copyright
Copyright © 2001 by Australasian Plant Pathology Society
Subject
Life Sciences; Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1071/AP01058
Publisher site
See Article on Publisher Site

Abstract

Apparent degradation of pyrimethanil was observed when a number of fungal pathogens were grown on Tinlines Minimal medium supplemented with the fungicide Scala. Degradation was suspected after development of a zone of clearing around the site of inoculation on agar plates indicated disappearance of the fungicide. Once cleared, fungal growth occurred within the zone. Gas Chromatography/Mass Spectrometry analysis of extracts from agar plates that had been colonised by Botrytis cinerea Pers. and other fungi indicated that the fungicide had not been degraded, but had concentrated at the edges of the Petri dish away from the point of growth. The physical basis of this fungicide mobility within the agar medium cannot be explained but is presumably due to metabolic activity of the growing fungal mycelium.

Journal

Australasian Plant PathologySpringer Journals

Published: Jan 28, 2011

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