Publikation: Invasive and native plants show different root responses to feedback-mediated soil heterogeneity
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Background and aims
Soil heterogeneity can be caused by plant-soil feedback (PSF), but little is known about how this affects plant growth and the distribution of roots. Moreover, as invasive and native plant species frequently differ in PSF and root-foraging ability, they may differ in their responses to PSF-mediated soil heterogeneity.
Methods
We first conditioned soils by 16 plant species (eight confamilial pairs of invasive alien and native species). Then, we grew each species in a homogeneous treatment with unconditioned soil and in three heterogeneous treatments with four patches. In the home-soil treatment, we filled two patches with unconditioned soil and two with soil conditioned by the target species. In the foreign-soil treatment, we filled two patches with unconditioned soil and two with soil conditioned by the other species in a pair. In the home-and-foreign-soil treatment, we filled two patches with home soil and two with foreign soil.
Results
Compared to the homogeneous unconditioned soil treatment, PSF negatively affected plant growth. In the heterogeneous treatment with control- and home-soil patches, biomass was reduced more strongly for the invasive species than for the native species. In the heterogeneous treatment with both home- and foreign-soil patches, root biomass of the invasive species was greater in the foreign-soil than in the home-soil patches, whereas the reverse was true for natives.
Conclusion
Although invasive species suffered more from conspecific PSF, root foraging allowed them to avoid home soil. In the long term, this could help invasive species gain a competitive advantage over natives.
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CHEN, Duo, Mark VAN KLEUNEN, Yong-Jian WANG, Fei-Hai YU, 2024. Invasive and native plants show different root responses to feedback-mediated soil heterogeneity. In: Plant and Soil. Springer. 2024, 494(1-2), S. 497-508. ISSN 0032-079X. eISSN 1573-5036. Verfügbar unter: doi: 10.1007/s11104-023-06296-wBibTex
@article{Chen2024Invas-68232, title={Invasive and native plants show different root responses to feedback-mediated soil heterogeneity}, year={2024}, doi={10.1007/s11104-023-06296-w}, number={1-2}, volume={494}, issn={0032-079X}, journal={Plant and Soil}, pages={497--508}, author={Chen, Duo and van Kleunen, Mark and Wang, Yong-Jian and Yu, Fei-Hai} }
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