title: [Mycotrophic capacity and efficiency of microbial consortia of arbuscular mycorrhizal fungi native of soils from Buenos Aires province under contrasting management].
abstract: We characterized the infective and sporulation capacities of microbial consortia of arbuscular mycorrhizal fungi (AMF) native of Buenos Aires province (Argentina) and determined if some soil characteristics and mycorrhizal parameters could allow to select potentially beneficial inocula. Soil samples were selected from seven locations in Buenos Aires province all under agricultural (A) and pristine (P) conditions. The AMF were multiplied and mycorrhizal root colonization of trap plants was observed at 10 weeks of growth. Spore number in field was low; however, after multiplication spore density accounted for 80-1175 spores per 100g of soil. The principal component analysis showed that the P and Fe soil contents are the main modulators of infectivity and sporulation capacity. The mycorrhizal potential was determined in three locations, being high in Pristine Lobería and Agricultural Trenque Lauquen and low in Junín. Agricultural Lobería (AL) and Pristine Lobería (PL) inocula were selected and their efficiency was evaluated under controlled conditions. Even though shoot dry matter increases after inoculation was not significant (p>0.05) mycorrhizal response was greater than 40% for tomato and 25% for corn, particularly after inoculation with inocula from the agricultural management. These results could be associated to the incipient development of mycorrhizae in both species. Additional research should be conducted to further develop our findings in order to determine the factors involved in the selection of efficient inocula.
authors.affiliation: Unidad Integrada Facultad de Ciencias Agrarias-Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
authors.forename: Andrea J
authors.initials: AJ
authors.lastname: Thougnon Islas
authors.affiliation: Unidad Integrada Facultad de Ciencias Agrarias-Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Eyherabide
authors.affiliation: Unidad Integrada Facultad de Ciencias Agrarias-Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina.
authors.forename: Hernán E
authors.initials: HE
authors.lastname: Echeverría
authors.affiliation: Unidad Integrada Facultad de Ciencias Agrarias-Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
authors.forename: Hernán R
authors.initials: HR
authors.lastname: Sainz Rozas
authors.affiliation: Unidad Integrada Facultad de Ciencias Agrarias-Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC), Mar del Plata, Argentina. Electronic address: covacevich.fernanda@inta.gob.ar.
authors.forename: Fernanda
authors.initials: F
authors.lastname: Covacevich
mesh_terms: D000383:Agriculture; D001118:Argentina; D005658:Fungi; D059013:Microbial Consortia; D038821:Mycorrhizae / Q000502:physiology*; D012988:Soil Microbiology
keywords: Agricultural management; Capacidad micotrófica; Corn; Glomeromycota; Infective capacity; Manejo agrícola; Maíz; Mycorrhizal response; Respuesta micorrícica; Tomate; Tomato