IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
capítulos de libros
Título:
Mycorrhizal diversity in native and exotic willows (Salix humboldtiana and S. alba) in Argentina.
Autor/es:
LUGO, M. A., A. G. BECERRA, E. R. NOUHRA AND A. C. OCHOA
Libro:
Chapter 10. Mycorrhiza: Occurrence and Role in Natural and Restored Environments
Editorial:
Nova Science Publishers
Referencias:
Lugar: Nueva York; Año: 2012; p. 201 - 222
Resumen:
Mycorrhizal morphology and diversity vary not only within each particular host family of plants, but also with soil characteristics, nutrients availability, spatial-temporal conditions, micro-habitats, and host?s age. Ectomycorrhizae (ECM) and arbuscular mycorrhizae (AM) provide nutritional benefits to their hosts, besides their effects in soil aggregation, soil pollutants sequestration and host?s interconnection by hyphal network that allows nutrients transport, seedlings establishment and conservation of forest ecosystems. Furthermore, certain hosts species such as Salix spp. in the Salicaceae are involved in dual associations with ECM and Glomeromycota fungal symbionts. Salix, presents a wide distribution in South America, native Salix humboltiana populations as well us the introduced species are mostly located in riparian ecosystems, or in temporarily flooded areas. Riparian zones have an important role regulating the movement of material and water between soil-river systems. Mycorrhizal diversity and colonization was studied in riparian populations of native S. humboltiana Willd. and of exotic S. alba L. in semiarid riparian environments. Differences in ECM morphotypes and mycorrhizal colonization were found in both species. Effects of soil physical-chemical features on ECM diversity are discussed and ECM morphotypes are illustrated.