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The effects of glyphosate, glufosinate, paraquat and paraquat-diquat on soil microbial activity and bacterial, archaeal and nematode diversity

Dennis, P. G., Kukulies, T., Forstner, C., Orton, T. G. and Pattison, A. B. (2018) The effects of glyphosate, glufosinate, paraquat and paraquat-diquat on soil microbial activity and bacterial, archaeal and nematode diversity. Scientific Reports, 8 (1). p. 2119. ISSN 2045-2322

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Article Link(s): https://doi.org/10.1038/s41598-018-20589-6

Abstract

In this study, we investigated the effects of one-off applications of glyphosate, glufosinate, paraquat, and paraquat-diquat on soil microbial diversity and function. All herbicides were added to soil as pure compounds at recommended dose and were incubated under laboratory conditions for 60 days. High-throughput phylogenetic marker gene sequencing revealed that none of the herbicides significantly influenced the richness, evenness and composition of bacterial and archaeal communities. Likewise, the diversity, composition and size of nematode communities were not significantly influenced by any of the herbicides. From a functional perspective, herbicides did not significantly affect fluorescein diacetate hydrolysis (FDA) and beta-glucosidase activities. Furthermore, the ability of soil organisms to utilise 15 substrates was generally unaffected by herbicide application. The only exception to this was a temporary impairment in the ability of soil organisms to utilise three organic acids and an amino acid. Given the global and frequent use of these herbicides, it is important that future studies evaluate their potential impacts on microbial communities in a wider-range of soils and environmental conditions.

Item Type:Article
Business groups:Horticulture and Forestry Science
Subjects:Science > Microbiology > Microbial ecology
Science > Microbiology > Bacteria
Agriculture > Agriculture (General) > Soils. Soil science
Deposited On:20 Nov 2018 03:14
Last Modified:20 Nov 2018 03:14

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