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On-line version ISSN 1668-298X


SAGADIN, M. B; MONTEOLIVA, M. I; LUNA, C. M  and  CABELLO, M. N. Diversity and infectivity of native arbuscular mycorrhizal fungi from Prosopis alba areas with contrasting edaphoclimatic characteristics in the Argentinian Parque Chaqueno. Agriscientia [online]. 2018, vol.35, n.2, pp.19-33. ISSN 1668-298X.

In severe environments, the presence of arbuscular mycorrhlzai fungi (AMF) Is essential for plant survival and a balanced ecosystem e. The aim of this work was to characterize the arbuscular mycorrhizal fungi present in algarrobales (Frosopis alba) areas of contrasting humid and semi-arid climatic conditions, Colonia Benitez and Padre Lozano respectively, both in the Parque Chaqueño region in Argentina. The Colonia Benitez and Padre Lozano sites showed significant edaphological differences, the most important being the lower content of organic matter and phosphorus, and the higher percentage of exchangeable sodium in Colonia Benitez, associated with a higher infective capacity and greater mycorrhizal potential of inoculum. Only one species was found in both soils: Acaulospora laevis, typical of arid environments. In the inocula, three species were identified in both sites: Funneliformis mosseae, Rhizophagus intraradices, Claroideoglomus etunicatum; two species were only identified in Colonia Benítez: Septoglomus constrictum and Rhizophagus clarus; and two species were only identified in Padre Lozano: Claroideoglomus claroideum and Diversispora spurca. This is the first study in Argentina to analyze AMF diversity in Frosopis alba areas (algarrobales) and their infectivity in the soils and their inocula.

Keywords : Arbuscular mycorrhizal fungi; Frosopis alba areas; Parque Chaqueno; Infectivity; Mycorrhizal potential; Diversity.

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