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Review article - Peer-reviewed, 2023

Assessing Effects of Genetically Modified Plant Material on the Aquatic Environment Using higher-tier Studies

Pott, Antonia; Bundschuh, Mirco; Otto, Mathias; Schulz, Ralf


Genetically modified organisms are used extensively in agriculture. To assess potential side effects of genetically modified (GM) plant material on aquatic ecosystems, only a very small number of higher-tier studies have been performed. At the same time, these studies are particularly important for comprehensive risk assessment covering complex ecological relationships. Here we evaluate the methods of experimental higher-tier effect studies with GM plant material (or Bt toxin) in comparison to those well-established for pesticides. A major difference is that nominal test concentrations and thus dose-response relationships cannot easily be produced with GM plant material. Another important difference, particularly to non-systemic pesticides, is that aquatic organisms are exposed to GM plant material primarily through their feed. These and further differences in test requirements, compared with pesticides, call for a standardisation for GM-specific higher-tier study designs to assess their potentially complex effects in the aquatic ecosystems comprehensively.


Genetically modified organism (GMO); Bt toxin; higher-tier; aquatic ecosystems; non-target effects

Published in

Bulletin of Environmental Contamination and Toxicology
2023, volume: 110, number: 1, article number: 35
Publisher: SPRINGER

Authors' information

University of Kaiserslautern-Landau (RPTU)
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Pott, Antonia
University of Kaiserslautern-Landau (RPTU)
Otto, Mathias
Federal Agency for Nature Conservation (BfN)
Schulz, Ralf
University of Kaiserslautern-Landau (RPTU)

UKÄ Subject classification

Environmental Sciences related to Agriculture and Land-use

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