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- W2908725576 abstract "Cadmium (chemical symbol, Cd) is an extremely common pollutant that poses a toxicity threat to organisms. Therefore, we tested Drosophila melanogaster fecundity, Cd accumulation, and activity of two enzymes following Cd stress and used quantitative real-time polymerase chain reaction (qPCR) to quantify the mRNA expression levels of several genes involved in fecundity and defence. D. melanogaster was placed in a medium containing different concentrations of Cd (13, 26, and 52 mg L-1), following which, inductively coupled plasma atomic emission spectroscopy showed that Cd accumulation in Drosophila increased with the increase in its dietary intake. We also observed that Cd at these concentrations significantly prolonged the mating latency in females and reduced the number of eggs laid. However, the same Cd concentrations did not affect male fecundity. Acetylcholinesterase activity was only detected at 52 mg L-1 Cd in both sexes, whereas glutathione S-transferase activity was inhibited at 26 and 52 mg L-1 Cd in females. The results of qPCR indicated that exposure to 13-52 mg L-1 Cd affected the expression of reproduction-related genes, including downregulation of enok and upregulation of dally and dpp. The same level of exposure also induced transcriptional responses from three defence-related genes (hsp70, gstd2, and gstd6). Taken together, the results revealed that Cd exposure might negatively affect the expression of genes associated with D. melanogaster reproduction and trigger the transcription of defence-related genes. We suggest that further analyses of fecundity and defence responses may help develop indicators of Cd toxicity and improve our understanding of antitoxin defences." @default.
- W2908725576 created "2019-01-25" @default.
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- W2908725576 date "2019-04-01" @default.
- W2908725576 modified "2023-09-27" @default.
- W2908725576 title "Effects of cadmium on fecundity and defence ability of Drosophila melanogaster" @default.
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- W2908725576 doi "https://doi.org/10.1016/j.ecoenv.2019.01.029" @default.
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