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Differential effects of transgenerational plasticity on morphological and photosynthetic properties between an invasive plant and its congeneric native one

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Abstract

Phenotype of plant offspring may be affected by particularly maternal environmental conditions, which is named as transgenerational plasticity. Transgenerational plasticity enhances the fitness of offspring under the maternal environmental conditions. Transgenerational plasticity may promote the successful invasion of alien plants, particularly those with clonal growth. However, few studies have compared transgenerational plasticity between alien invasive clonal plants and their congeneric native ones. A pot experiment with the invasive herb Wedelia trilobata and its congeneric native species Wedelia chinensis was conducted to investigate effects of light conditions (low vs. high light treatment) experienced by mother ramets on morphological and photosynthetic properties of offspring ramets subjected to the low light treatment. Compared with those of offspring ramets from mother ramets subjected to the high light treatment, leaf area, potential maximum net photosynthetic rate (Pmax) and biomass accumulation of offspring ramets from mother ramets subjected to the low light treatment were significantly greater in W. trilobata than W. chinensis. Opposite pattern was observed in number of offspring ramets. We conclude that effects of transgenerational plasticity on growth performance could be species-specific between invasive plant and its congeneric native one. Positive effect of transgenerational plasticity on number of offspring ramets was not transformed into growth advantages of native species W. chinensis during its later establishment. However, favorable effects of transgenerational plasticity on capturing light resource could enhance competitive ability and promote successful invasion of W. trilobata.

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

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Acknowledgements

This research was supported by the Key Research and Development Program of Sichuan Province (Grant No.19ZDYF) and Specialized Fund for the Post-Disaster Reconstruction and Heritage Protection in Sichuan Province (No. 5132202019000128).

Funding

This research was supported by the Key Research and Development Program of Sichuan Province (Grant No.19ZDYF) and Specialized Fund for the Post-Disaster Reconstruction and Heritage Protection in Sichuan Province (No. 5132202019000128).

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Xiao Xiao, Linxuan He, Xiaomei Zhang and Yu Jin. The first draft of the manuscript was written by Xiao Xiao. Jinsong Chen commented on previous versions of the manuscript and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. All authors read and approved the final manuscript.

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Correspondence to Jinsong Chen.

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Xiao, X., He, L., Zhang, X. et al. Differential effects of transgenerational plasticity on morphological and photosynthetic properties between an invasive plant and its congeneric native one. Biol Invasions 25, 115–123 (2023). https://doi.org/10.1007/s10530-022-02899-z

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  • DOI: https://doi.org/10.1007/s10530-022-02899-z

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