Azoxystrobin and soil interactions: degradation and impact on soil bacterial and fungal communities

Adetutu, E, Ball, A and Osborn, A 2008, 'Azoxystrobin and soil interactions: degradation and impact on soil bacterial and fungal communities', Journal of Applied Microbiology, vol. 105, no. 6, pp. 1777-1790.


Document type: Journal Article
Collection: Journal Articles

Title Azoxystrobin and soil interactions: degradation and impact on soil bacterial and fungal communities
Author(s) Adetutu, E
Ball, A
Osborn, A
Year 2008
Journal name Journal of Applied Microbiology
Volume number 105
Issue number 6
Start page 1777
End page 1790
Total pages 14
Publisher Wiley-Blackwell
Abstract Aims: To provide an independent assessment of azoxystrobin effects on nontarget soil bacteria and fungi and generate some baseline information on azoxystrobin's persistence in soil. Methods and Results: Plate based assay showed that azoxystrobin exhibited differential toxicity upon cultured fungi at different application rates. While 14C labelled isotopes experiments showed that less than 1% of azoxystrobin was mineralized, degradation studies revealed over 60% azoxystrobin breakdown over 21 days. PCR DGGE analysis of 16S and 18S rRNA genes from different soil microcosms showed that azoxystrobin had some effects on fungal community after 21 days (up to 84 days) of incubation in either light or dark soil microcosms. Light incubations increased fungal diversity while dark incubations reduced fungal diversity. Bacterial diversity was unaffected. Conclusions: Significant biotic breakdown of parent azoxystrobin occurred within 21 days even in the absence of light. Azoxystrobin under certain conditions can reduce fungal soil diversity. Significance and Impact of the Study: One of the few independent assessments of azoxystrobin (a widely used strobilurins fungicide) effects on soil fungi when used at the recommended rate. Azoxystrobin and metabolites may persist after 21 days and affect soil fungi
Subject Environmental Biotechnology not elsewhere classified
Biological Sciences not elsewhere classified
Keyword(s) 14C
Azoxystrobin
Bacteria
DGGE
Fungi
PCR
DOI - identifier 10.1111/j.1365-2672.2008.03948.x
Copyright notice © 2008 The Authors,Journal compilation © 2008 The Society for Applied Microbiology, Journal of Applied Microbiology
ISSN 1364-5072
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