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Título: | Global gene flow releases invasive plants from environmental constraints on genetic diversity |
Autor: | Smith, Annabel L.; Hodkinson, Trevor R.; Villellas, Jesús CSIC ORCID; Catford, Jane A.; Csergó, Anna Mária; Blomberg, Simone P.; Crone, Elisabeth E.; Ehrlén, Johan; García, María B.; Laine, Anna-Liisa; Roach, Deborah A.; Salguero-Gómez, R.; Wardle, Glenda M.; Childs, Dylan Z.; Elderd, Bret D.; Finn, Alain; Munné-Bosch, Sergi; Baudraz, Maude E.A.; Bódis, Judit; Brearley, Francis Q.; Bucharova, Anna; Caruso, Christina M.; Duncan, Richard P.; Dwyer, John M.; Gooden, Ben; Groenteman, Ronny; Hamre, Liv Norunn; Helm, Aveliina; Kelly, Ruth; Laanisto, Lauri CSIC ORCID; Lonati, Michael; Moore, Joslin L.; Morales, Melanie; Olsen, Siri Lie; Pärtel, Meelis; Petry, William K.; Ramula, Satu; Rasmussen, Pil U.; Ravetto Enri, Simone; Roeder, Anna; Roscher, Christiane; Saastamoinen, Satu; Tack, Ayco J. M.; Töpper, Joachim Paul; Vose, Gregory E.; Wandrag, Elizabeth M.; Wingler, Astrid; Buckley, Yvonne M. | Palabras clave: | Plant invasion Adaptation Global change Population genetics Demography |
Fecha de publicación: | 25-feb-2020 | Editor: | National Academy of Sciences (U.S.) | Citación: | Proceedings of the National Academy of Sciences of the USA 117(8): 4218-4227 (2020) | Resumen: | When plants establish outside their native range, their ability to adapt to the new environment is influenced by both demography and dispersal. However, the relative importance of these two factors is poorly understood. To quantify the influence of demography and dispersal on patterns of genetic diversity underlying adaptation, we used data from a globally distributed demographic research network comprising 35 native and 18 nonnative populations of Plantago lanceolata. Species-specific simulation experiments showed that dispersal would dilute demographic influences on genetic diversity at local scales. Populations in the native European range had strong spatial genetic structure associated with geographic distance and precipitation seasonality. In contrast, nonnative populations had weaker spatial genetic structure that was not associated with environmental gradients but with higher within-population genetic diversity. Our findings show that dispersal caused by repeated, long-distance, human-mediated introductions has allowed invasive plant populations to overcome environmental constraints on genetic diversity, even without strong demographic changes. The impact of invasive plants may, therefore, increase with repeated introductions, highlighting the need to constrain future introductions of species even if they already exist in an area. | Versión del editor: | http://dx.doi.org/10.1073/pnas.1915848117 | URI: | http://hdl.handle.net/10261/239426 | DOI: | 10.1073/pnas.1915848117 | Identificadores: | doi: 10.1073/pnas.1915848117 issn: 1091-6490 |
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