Invasive plant suppresses the growth of native tree seedlings by disrupting belowground mutualisms |
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| Authors: | Stinson Kristina A Campbell Stuart A Powell Jeff R Wolfe Benjamin E Callaway Ragan M Thelen Giles C Hallett Steven G Prati Daniel Klironomos John N |
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| Affiliation: | 1Harvard Forest, Harvard University, Petersham, Massachusetts, United States of America;2Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada;3Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America;4Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, United States of America;5Department of Community Ecology, UFZ Centre for Environmental Research, Halle, Germany;McGill UniversityCanada |
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| Abstract: | The impact of exotic species on native organisms is widely acknowledged, but poorly understood. Very few studies have empirically investigated how invading plants may alter delicate ecological interactions among resident species in the invaded range. We present novel evidence that antifungal phytochemistry of the invasive plant, Alliaria petiolata, a European invader of North American forests, suppresses native plant growth by disrupting mutualistic associations between native canopy tree seedlings and belowground arbuscular mycorrhizal fungi. Our results elucidate an indirect mechanism by which invasive plants can impact native flora, and may help explain how this plant successfully invades relatively undisturbed forest habitat. |
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