Plant-soil feedback and the maintenance of diversity in Mediterranean-climate shrublands

Título: Plant-soil feedback and the maintenance of diversity in Mediterranean-climate shrublands
Autor/es: Teste, F.P.; Kardol, P.; Turner, B.L.; Wardle, D.A.; Zemunik, G.; Renton, M.; Lalibert, E.
Año: 2017
Revista: Science
Idioma: Ingles
Disponibilidad: En linea
Citación:
Teste, F.P.; Kardol, P.; Turner, B.L.; Wardle, D.A.; Zemunik, G.; Renton, M.; Lalibert, E. (2017): Science, Vol. 355, Issue 6321, pp. 173-176 DOI: 10.1126/science.aai8291

Un científico de CONICET demostró, en un estudio realizado en Australia, que la retroalimentación entre plantas y la biota de los suelos contribuye al mantenimiento de la diversidad funcional y de especies vegetales.

Soil biota influence plant performance through plant-soil feedback, but it is unclear whether the strength of such feedback depends on plant traits and whether plant-soil feedback drives local plant diversity. We grew 16 co-occurring plant species with contrasting nutrient-acquisition strategies from hyperdiverse Australian shrublands and exposed them to soil biota from under their own or other plant species. Plant responses to soil biota varied according to their nutrient-acquisition strategy, including positive feedback for ectomycorrhizal plants and negative feedback for nitrogen-fixing and nonmycorrhizal plants. Simulations revealed that such strategy-dependent feedback is sufficient to maintain the high taxonomic and functional diversity characterizing these Mediterranean-climate shrublands. Our study identifies nutrient-acquisition strategy as a key trait explaining how different plant responses to soil biota promote local plant diversity.

Acceso Usuarios

ISSN 2314-2030