Multiple stressor effects of insecticide exposure and increased fine sediment deposition on the gene expression profiles of two freshwater invertebrate species

Environmental Sciences Europe

Research

Leoni Mack¹  Dominik Buchner²  Florian Leese³  Christoph Mayer⁴  Marie V. Brasseur⁵  Ralf B. Schäfer⁶  Verena C. Schreiner⁶ 

[1] Aquatic Ecology, University of Duisburg-Essen, Universitaetsstrasse 5, 45141, Essen, Germany;Aquatic Ecosystem Research, University of Duisburg-Essen, Universitaetsstrasse 5, 45141, Essen, Germany;Aquatic Ecosystem Research, University of Duisburg-Essen, Universitaetsstrasse 5, 45141, Essen, Germany;Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitaetsstrasse 2, 45141, Essen, Germany;Centre for Molecular Biodiversity Research, Leibniz Institute for the Analysis of Biodiversity Change, Adenauerallee 127, 53113, Bonn, Germany;Centre for Molecular Biodiversity Research, Leibniz Institute for the Analysis of Biodiversity Change, Adenauerallee 127, 53113, Bonn, Germany;Aquatic Ecosystem Research, University of Duisburg-Essen, Universitaetsstrasse 5, 45141, Essen, Germany;iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, 76829, Landau, Germany;

关键词: Agricultural stressor;    Antagonistic interaction;    Chlorantraniliprole;    Pesticide;    Sedimentation;    Synergistic interaction;    Transcriptomic stress;   

DOI  :  10.1186/s12302-023-00785-6

 received in 2023-06-19, accepted in 2023-09-02,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundFreshwater ecosystem degradation and biodiversity decline are strongly associated with intensive agricultural practices. Simultaneously occurring agricultural stressors can interact in complex ways, preventing an accurate prediction of their combined effects on aquatic biota. Here, we address the limited mechanistic understanding of multiple stressor effects of two globally important stressors, an insecticide (chlorantraniliprole), and increased fine sediment load and assessed their impact on the transcriptomic profile of two stream macroinvertebrates: the amphipod Gammarus pulex and the caddisfly Lepidostoma basale.ResultsWe identified mainly antagonistic stressor interactions at the transcriptional level, presumably because the insecticide adsorbed to fine sediment particles. L. basale, which is phylogenetically more closely related to the insecticide’s target taxon Lepidoptera, exhibited strong transcriptional changes when the insecticide stressor was applied, whereas no clear response patterns were observed in the amphipod G. pulex. These differences in species vulnerability can presumably be attributed to molecular mechanisms determining the cellular affinity toward a stressor as well as differential exposure patterns resulting from varying ecological requirements between L. basale and G. pulex. Interestingly, the transcriptional response induced by insecticide exposure in L. basale was not associated with a disruption of the calcium homeostasis, which is the described mode of action for chlorantraniliprole. Instead, immune responses and alterations of the developmental program appear to play a more significant role.ConclusionsOur study shows how transcriptomic data can be used to identify multiple stressor effects and to explore the molecular mechanisms underlying stressor-induced physiological responses. As such, stressor effects assessed at the molecular level can inform about modes of action of chemicals and their interplay with non-chemical stressors. We demonstrated that stressor effects vary between different organismic groups and that insecticide effects are not necessarily covered by their described mode of action, which has important implications for environmental risk assessment of insecticides in non-target organisms.

【 授权许可】

CC BY   
© Springer-Verlag GmbH Germany, part of Springer Nature 2023

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