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Better growth and photosynthetic performance of Elodea nuttallii to short-term hydrogen sulfide than native Hydrilla verticillata

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Abstract

Sulfur deposition and eutrophication accelerated the production of hydrogen sulfide (H2S) in aquatic ecosystems. However, the understanding of how H2S affects the invasive potential of exotic aquatic plants is inadequate. Here, the exotic Elodea nuttallii (Planch.) H. St. John was exposed to five H2S concentrations (0–1.0 mM) and compared with the native Hydrilla verticillata (L. f.) Royle. Both plants grew well below 0.5 mM H2S, with E. nuttallii showing better performance. E. nuttallii and H. verticillata maintained their height growth rates by reducing the ramets number and the relative growth rate, respectively. This trade-off in morphological traits was for adequate light and oxygen. Furthermore, E. nuttallii exhibited higher chlorophyll and carotenoids content but lower chlorophyll a/b, indicating better utilization of low light in the water body. High concentrations of H2S induced oxidative stress in E. nuttallii, leading to higher superoxide dismutase (SOD), soluble sugars, and starch. The utilization strategies of C, N, P and S by E. nuttallii remained unchanged with varying H2S concentrations, demonstrating higher stoichiometric stability. In conclusion, E. nuttallii showed greater resistance to H2S compared to H. verticillata. The invasive potential of E. nuttallii in H2S-enriched aquatic environments was depending on the H2S concentration of native community.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

We sincerely appreciate the assistance from Dr. Tian Lv throughout the writing process.

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HL Conceptualization, Investigation, Methodology, Writing—review & editing. HH Formal analysis, Visualization, Writing—original draft, Writing—review & editing. HY and SF Funding acquisition, Resources, Writing—review & editing. CL Conceptualization, Writing—review & editing, Supervision.

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Correspondence to Haihao Yu or Shufeng Fan.

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Guest editors: Sidinei M. Thomaz, Cécile Fauvelot, Lee B. Kats, Jonne Kotta & Fernando M. Pelicice / Aquatic Invasive Species IV

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Liu, H., Huang, H., Yu, H. et al. Better growth and photosynthetic performance of Elodea nuttallii to short-term hydrogen sulfide than native Hydrilla verticillata. Hydrobiologia (2024). https://doi.org/10.1007/s10750-024-05592-5

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  • DOI: https://doi.org/10.1007/s10750-024-05592-5

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