Daphnia magna Multigeneration Exposure to Carbendazim: Gene Transcription Responses
- PMID: 37999570
- PMCID: PMC10674461
- DOI: 10.3390/toxics11110918
Daphnia magna Multigeneration Exposure to Carbendazim: Gene Transcription Responses
Abstract
The world population is experiencing colossal growth and thus demand for food, leading to an increase in the use of pesticides. Persistent pesticide contamination, such as carbendazim, remains a pressing environmental concern, with potentially long-term impacts on aquatic ecosystems. In the present study, Daphnia magna was exposed to carbendazim (5 µg L-1) for 12 generations, with the aim of assessing gene transcription alterations induced by carbendazim (using a D. magna custom microarray). The results showed that carbendazim caused changes in genes involved in the response to stress, DNA replication/repair, neurotransmission, ATP production, and lipid and carbohydrate metabolism at concentrations already found in the environment. These outcomes support the results of previous studies, in which carbendazim induced genotoxic effects and reproduction impairment (increasing the number of aborted eggs with the decreasing number of neonates produced). The exposure of daphnids to carbendazim did not cause a stable change in gene transcription between generations, with more genes being differentially expressed in the F0 generation than in the F12 generation. This could show some possible daphnid acclimation after 12 generations and is aligned with previous multigenerational studies where few ecotoxicological effects at the individual and populational levels and other subcellular level effects (e.g., biochemical biomarkers) were found.
Keywords: aquatic invertebrates; gene transcription; microarrays; multigeneration testing; pesticide; water pollution.
Conflict of interest statement
The authors declare no conflict of interest.
Figures
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