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Impacts of bisphenol A on growth and reproductive traits of submerged macrophyte Vallisneria natans

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Abstract

Bisphenol A (BPA) is considered a contaminant of emerging concern and interferes with the normal activities of living organisms. The toxicity of BPA is evident in animals and terrestrial plants. However, the response of aquatic plants to low BPA concentrations is still unclear. In the present study, effects of varying BPA loadings (targeting at 0.01, 0.1, and 1 mg/L) on the growth and reproductive traits of the dioecious annual submerged macrophyte Vallisneria natans were assessed through a 5-month experiment. The results showed that BPA inhibited the elongation of V. natans leaves but resulted in an increase in leaf number and ramet number under the highest BPA loading treatment (targeting at 1 mg/L). In addition, detectable biochemical changes in the total carbon and soluble sugar contents were found, which both were significantly higher at the highest BPA loading treatment. However, the total biomass did not alter significantly after the BPA treatments, indicating that BPA did not induce direct toxic effects on the growth of V. natans. At the highest BPA loading treatment, female individuals of V. natans allocated less number for ramet than male ones, showing a clear sexual dimorphism. No significant differences between the five treatments were found for the flower or fruit traits, while the germination rate was significantly inhibited for the seeds collected from the highest BPA loading treatment. In conclusion, V. natans tolerated low concentrations of BPA by making a trade-off between ramet (leaf) number and leaf elongation, as well as modulating the total carbon and soluble sugar contents. However, serious consequence of decline in seed viability implied that the impact of BPA on plant reproduction were usually underestimated.

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Data sets in the current study are available from the corresponding authors upon reasonable request.

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Acknowledgements

Thanks to Dr. Aitian Ren for her writing assistance.

Funding

This work was supported by the Knowledge Innovation Program of Wuhan-Shuguang Project.

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Experimental design: Huiying Han, Longyi Yuan and Yu Cao; research activities: Huiying Han, Hang Wu, Yu Cao, Yongwei Zhi and Jingzhe Zhou; writing—original draft preparation: Huiying Han, Wei Li and Yu Cao; writing—review and editing: Huiying Han, Longyi Yuan, Yu Cao and Jingzhe Zhou.

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Correspondence to Longyi Yuan or Yu Cao.

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Responsible Editor: Gangrong Shi

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Han, H., Wu, H., Zhi, Y. et al. Impacts of bisphenol A on growth and reproductive traits of submerged macrophyte Vallisneria natans. Environ Sci Pollut Res 30, 46383–46393 (2023). https://doi.org/10.1007/s11356-023-25521-8

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  • DOI: https://doi.org/10.1007/s11356-023-25521-8

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