Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.ecoenv.2023.115080
Lizenz creative commons licence
Titel (primär) Glyphosate without Co-formulants affects embryonic development of the south african clawed frog Xenopus laevis
Autor Flach, H.; Dietmann, P.; Liess, M.; Kühl, M.; Kühl, S.J.
Quelle Ecotoxicology and Environmental Safety
Erscheinungsjahr 2023
Department OEKOTOX
Band/Volume 260
Seite von art. 115080
Sprache englisch
Topic T9 Healthy Planet
Keywords Xenopus; Embryogenesis; Cardiac development; Neural development; Herbicide



Glyphosate (GLY) is the most widely used herbicide in the world. Due to its mode of action as an inhibitor of the 5-enolpyruvylshikimate-3-phosphate synthase, an important step in the shikimate pathway, specifically in plants, GLY is considered to be of low toxicity to non-target organisms. However, various studies have shown the negative effects of GLY on the mortality and development of different non-target organisms, including insects, rodents, fish and amphibians. To better understand the various effects of GLY in more detail, we studied the effects of GLY without co-formulants during the embryogenesis of the aquatic model organism Xenopus laevis.



A treatment with GLY affected various morphological endpoints in X. laevis tadpoles (body length, head width and area, eye area). Additionally, GLY interfered with the mobility as well as the neural and cardiac development of the embryos at stage 44/45. We were able to detect detailed structural changes in the cranial nerves and the heart and gained insights into the negative effects of GLY on cardiomyocyte differentiation.



The application of GLY without co-formulants resulted in negative effects on several endpoints in the early embryonic development of X. laevis at concentrations that are environmentally relevant and concentrations that reflect the worst-case scenarios. This indicates that GLY could have a strong negative impact on the survival and lives of amphibians in natural waters. As a result, future GLY approvals should consider its impact on the environment.

dauerhafte UFZ-Verlinkung
Flach, H., Dietmann, P., Liess, M., Kühl, M., Kühl, S.J. (2023):
Glyphosate without Co-formulants affects embryonic development of the south african clawed frog Xenopus laevis
Ecotox. Environ. Safe. 260 , art. 115080 10.1016/j.ecoenv.2023.115080