| Title: | Glyphosate-based herbicide has soil-mediated effects on potato glycoalkaloids and oxidative status of a potato pest |
| Author(s): | Rainio MJ; Margus A; Virtanen V; Lindstrom L; Salminen JP; Saikkonen K; Helander M; |
| Address: | "Department of Biology, University of Turku, FI-20014, Turku, Finland. Electronic address: miikoi@utu.fi. Department of Biological and Environmental Science, University of Jyvaskyla, FI-40014, Jyvaskyla, Finland. Electronic address: aigi.margus@jyu.fi. Department of Chemistry, University of Turku, FI-20014, Turku, Finland. Electronic address: valtteri.virtanen@utu.fi. Department of Biological and Environmental Science, University of Jyvaskyla, FI-40014, Jyvaskyla, Finland. Electronic address: leena.m.lindstrom@jyu.fi. Department of Chemistry, University of Turku, FI-20014, Turku, Finland. Electronic address: j-p.salminen@utu.fi. Biodiversity Unit, University of Turku, FI-20014, Turku, Finland. Electronic address: karisaik@utu.fi. Department of Biology, University of Turku, FI-20014, Turku, Finland. Electronic address: helander@utu.fi" |
| DOI: | 10.1016/j.chemosphere.2020.127254 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Glyphosate is the most used herbicide worldwide, targeting physiological pathways in plants. Recent studies have shown that glyphosate can also cause toxic effects in animals. We investigated the glyphosate-based herbicide (GBH)-induced changes in potato (Solanum tuberosum) plant chemistry and the effects of a GBH on the survival rate and oxidative status of the Colorado potato beetle (Leptinotarsa decemlineata). The beetles were reared on potato plants grown in pots containing soil treated with a GBH (Roundup Gold, 450 g/l) or untreated soil (water control). The 2nd instar larvae were introduced to the potato plants and then collected in 2 phases: as 4th instar larvae and as adults. The main glycoalkaloids of the potato plants, alpha-solanine and alpha-chaconine, were measured twice during the experiment. The alpha-solanine was reduced in potato plants grown in GBH-treated soil, which can be detrimental to plant defenses against herbivores. GBH treatment had no effect on the survival rate or body mass of the larvae or the adult beetles. In the larvae, total glutathione (tGSH) concentration and the enzyme activity of catalase (CAT), superoxide dismutase, and glutathione-S-transferase were increased in the GBH treatment group. In the adult beetles, CAT activity and tGSH levels were affected by the interactive effect of GBH treatment and the body mass. To conclude, environmentally relevant concentrations of a GBH can affect the potato plant's glycoalkaloid concentrations, but are not likely to directly affect the survival rate of the Colorado potato beetle, but instead, modify the antioxidant defense of the beetles via diet" |
| Keywords: | Animals Antioxidants/metabolism Coleoptera/*drug effects/metabolism Glutathione Transferase/metabolism Glycine/*analogs & derivatives/toxicity Herbicides/*toxicity Larva/drug effects/metabolism Oxidation-Reduction Oxidative Stress/*drug effects Soil/*chem; |
| Notes: | "MedlineRainio, Miia J Margus, Aigi Virtanen, Valtteri Lindstrom, Leena Salminen, Juha-Pekka Saikkonen, Kari Helander, Marjo eng England 2020/06/20 Chemosphere. 2020 Nov; 258:127254. doi: 10.1016/j.chemosphere.2020.127254. Epub 2020 Jun 5" |
