INVESTIGADORES
MESSUTI Maria ines
artículos
Título:
Arbuscular mycorrhizas and dark septate fungi in Lycopodium paniculatum (Lycopodiaceae) and Equisetum
Autor/es:
FERNÁNDEZ, N.V., FONTENLA, S. Y MESSUTI, M.I.
Revista:
AMERICAN FERN JOURNAL
Editorial:
BioOne
Referencias:
Lugar: Washington, Estados Unidos; Año: 2008 vol. 98 p. 117 - 127
ISSN:
0002-8444
Resumen:
Arbuscular mycorrhizas (AM) are one of the most widespread and common type ofsymbiotic associations. Lycopodium paniculatum and Equisetum bogotense are two importantspecies of seedless vascular plants in a Valdivian temperate forest of Patagonia, Argentina. Themycorrhizal status of these species is completely unknown, as it is for most lycophytes andmonilophytes in Argentina, where information on symbiotic interactions in these plants is scarce.In this study, typical AM structures were observed in sporophytes of L. paniculatum and E.bogotense. The percentage of root length colonized by AM fungi ranged from 0 to 50% in the firstspecies and from 0 to 22.5% in E. bogotense. Both species were facultative mycorrhizal and it wasobserved that the habitat and substrate seem to play an important role in determining the colonization intensity. The morphological AM colonization pattern was considered an Intermediate-type. Dark septate fungi, characterized by septate hyphae and microsclerotia, were alsopresent within the roots of L. paniculatum and E. bogotense.KEY WORDS.—arbuscular mycorrhiza, morphological type, Intermediate-type, dark septate fungi, Lycopodium, Equisetum, Valdivian temperate forest