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Boletín de la Sociedad Argentina de Botánica
versión On-line ISSN 1851-2372
Resumen
URCELAY, Carlos; TECCO, Paula A. y CHIARINI, Franco. 'Arum' and 'Paris' arbuscular mycorrhizal types and dark septate root endophytes in Miconia ioneura and Tibouchina paratropica (Melastomataceae). Bol. Soc. Argent. Bot. [online]. 2005, vol.40, n.3-4, pp.151-155. ISSN 1851-2372.
The roots of Miconia ioneura and Tibouchina paratropica (Melastomataceae) were studied for fungal symbionts colonization. Typical structures of 'Paris' (intracellular hyphae and coils) and 'Arum' (intercellular hyphae and arbuscules) arbuscular mycorrhizal types were observed and are described here. Dark septate fungi (hyphae and sclerotia) were also observed. The occurrence of both types of arbuscular mycorrhizal colonisation and dark septate fungi in the roots of species belonging to Melastomataceae is reported for the first time. The possible ecological and evolutionary implications of the co-occurrence of these mycorrhizal colonisation types in the same species are discussed.
Palabras clave : Mycorrhizal types; Dark septate fungi; Yungas; Altitudinal grassland.