Quantification of ectomycorrhizal fungal effects on the bioavailability and mobilization of soil P in the rhizosphere of Pinus pinaster
| Autor: | Valter Casarin, Claude Plassard, Philippe Hinsinger, Jean-Claude Arvieu |
|---|---|
| Přispěvatelé: | UMR INRA / ENSAM : Rhizosphère et Symbiose (UMR R&S), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Montpellier (ENSA M), Universidade de São Paulo (USP) |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
0106 biological sciences
Physiology BIOAVAILABILITY OLSEN P Plant Science Biology RELATION PLANTE SOL 01 natural sciences SOIL P RHIZOPOGON ROSEOLUS Symbiosis Rhizopogon roseolus Botany CALCIUM CARBONATE Mycorrhiza ECTOMYCORRHIZAS 2. Zero hunger Rhizosphere Cambisol PIN MARITIME 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification HEBELOMA CYLINDROSPORUM [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy Ectomycorrhiza Shoot 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Pinus pinaster 010606 plant biology & botany |
| Zdroj: | New Phytologist New Phytologist, Wiley, 2004, 163 (1), pp.177-185. ⟨10.1111/j.1469-8137.2004.01093.x⟩ |
| ISSN: | 0028-646X 1469-8137 |
| Popis: | International audience; A differential effect of ectomycorrhizal symbiosis on soil P mobilization and host P nutrition is shown after culture of Pinus pinaster associated with Hebeloma cylindrosporum and Rhizopogon roseolus, poor and good oxalate/proton producers, respectively. Plants were grown in minirhizoboxes with a thin layer of a Mediterranean soil with a low level of easily available P. This soil was supplemented, or not, with inorganic P and/or CaCO3. The fungal efficiency on P mobilization and host mineral nutrition was quantified after a 3-month culture period. R. roseolus had a strong effect on the mobilization of poorly available P, whereas H. cylindrosporum had no effect. However, CaCO3 suppressed the positive effect of R. roseolus. Hydroxyapatite had the greatest effect on growth and P nutrition of nonmycorrhizal plants. With soluble P addition, both ectomycorrhizal species improved shoot P concentrations. The relationship between soil available P and shoot P concentrations enabled us to separate the fungal effects into two categories, the chemical actions and the soil exploration, explaining the positive effect of ectomycorrhizal symbiosis on P. pinaster P nutrition. |
| Databáze: | OpenAIRE |
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