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Resistance and resilience responses of a range of soil eukaryote and bacterial taxa to fungicide application
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Howell, Christopher Carl, Hilton, Sally, Semple, Kirk T. and Bending, G. D. (2014) Resistance and resilience responses of a range of soil eukaryote and bacterial taxa to fungicide application. Chemosphere, Volume 112 . pp. 194-202. doi:10.1016/j.chemosphere.2014.03.031
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Official URL: http://dx.doi.org/10.1016/j.chemosphere.2014.03.03...
Abstract
The application of plant protection products has the potential to significantly affect soil microbial community structure and function. However, the extent to which soil microbial communities from different trophic levels exhibit resistance and resilience to such compounds remains poorly understood. The resistance and resilience responses of a range of microbial communities (bacteria, fungi, archaea, pseudomonads, and nematodes) to different concentrations of the strobilurin fungicide, azoxystrobin were studied. A significant concentration-dependent decrease, and subsequent recovery in soil dehydrogenase activity was recorded, but no significant impact on total microbial biomass was observed. Impacts on specific microbial communities were studied using small subunit (SSU) rRNA terminal restriction fragment length polymorphism (T-RFLP) profiling using soil DNA and RNA. The application of azoxystrobin significantly affected fungal and nematode community structure and diversity but had no impact on other communities. Community impacts were more pronounced in the RNA-derived T-RFLP profiles than in the DNA-derived profiles. qPCR confirmed that azoxystrobin application significantly reduced fungal, but not bacterial, SSU rRNA gene copy number. Azoxystrobin application reduced the prevalence of ascomycete fungi, but increased the relative abundance of zygomycetes. Azoxystrobin amendment also reduced the relative abundance of nematodes in the order Enoplia, but stimulated a large increase in the relative abundance of nematodes from the order Araeolaimida.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | S Agriculture > SB Plant culture | ||||||||||
| Divisions: | Faculty of Science > Life Sciences (2010- ) | ||||||||||
| Library of Congress Subject Headings (LCSH): | Soil fungicides, Fungicide resistance | ||||||||||
| Journal or Publication Title: | Chemosphere | ||||||||||
| Publisher: | Pergamon | ||||||||||
| ISSN: | 0045-6535 | ||||||||||
| Official Date: | October 2014 | ||||||||||
| Dates: |
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| Volume: | Volume 112 | ||||||||||
| Number of Pages: | 9 | ||||||||||
| Page Range: | pp. 194-202 | ||||||||||
| DOI: | 10.1016/j.chemosphere.2014.03.031 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Open Access | ||||||||||
| Funder: | Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC) |
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