Annals of Forest Science, 75:72. Selection of arbuscular mycorrhizal fungal strains to improve Casuarina equisetifolia L. and Casuarina glauca Sieb. tolerance to salinity [texte imprimé] / Pape Ibrahima Djighaly, Auteur ; Nathalie Diagne, Auteur ; Mariama Ngom, Auteur ; Daouda Ngom, Auteur ; Valérie Hocher, Auteur ; Dioumacor Fall, Auteur ; Diegane Diouf, Auteur ; Laurent Laplaze, Auteur ; Sergio Svistoonoff, Auteur ; Antony Champion, Auteur . - France : INRA : [S.l.] : Springer, 2018 . - pp.1-11 : tabl., graph. ISSN : 13595-018-0747-1 Langues : Français ( fre) Catégories : | RESSOURCES NATURELLES ET ENVIRONNEMENT
| Mots-clés : | Salinité, Champignon mycorrhizien à Arbuscule, C. glauca . C. equisetifolia, Réhabilitation, sol salé | Index. décimale : | P342-Bactériologie et microbiologie du sol : azote dans le sol; inoculation, rhizobium, micorhyse | Résumé : | & Key message Selection of the best salt-tolerant combination of Casuarina sp. and arbuscular mycorrhizal fungi (AMF) is one of the key criteria for successful setup of saline land rehabilitation program.
& Context Land salinization is a serious problem worldwide that mainly leads to soil degradation and reduces crop productivity. These degraded areas could be rehabilitated by planting salt-tolerant species like Casuarina glauca Sieb. and Casuarina equisetifolia L. These are pioneer plants, able to form symbiotic associations with arbuscular mycorrhizal fungi (AMF), ectomycorrhizal fungi (EMF), and nitrogen-fixing bacteria.
& Aims The aim of this study was to select the highest salt-tolerant combination of Casuarina/AMF that can be used for the rehabilitation of lands degraded by salinity.
& Methods C. equisetifolia and C. glauca were grown in sandy sterile soil in the greenhouse and inoculated separately with Rhizophagus fasciculatus (Thaxt.) C. Walker & A. Schüßler, Rhizophagus aggregatus (N.C. Schenck & G.S. Sm.) C. Walker, and Rhizophagus intraradices (N.C. Schenck & G.S. Sm.) C. Walker & A. Schüßler. After confirming the establishment of a symbiosis, the plants were watered with gradually increasing concentrations of saline solution. After harvest, size and biomass of the seedlings, root colonization by AMF, and AMF metabolic activities were evaluated. |
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