INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
capítulos de libros
Ecophysiology of Prosopis species from arid land of Argentina: what do we know about adaptation to stressful environments?
VILLAGRA, P. E.; VILELA, A.; GIORDANO, C.; ALVAREZ, J.A.
Desert Plants. Biology and Biotechnology.
Lugar: Berlin Heidelberg; Año: 2010; p. 322 - 354
The expansion of the Prosopis genus from the sub-humid Chaco towards colder and drier zones such as the Monte, Prepuna and Patagonia biogeographical regions would have implied the acquisition and/or adjustment of morphological and physiological adaptations to stressful environments. In this chapter, we discuss the phenological, morphological and physiological features of seven Prosopis species from Argentinean arid regions that allow them to avoid or tolerate water stress, salinity, and other factors that produce plant stress in arid lands. Some of these adaptations appear to be spread over the genus and should confer the capability to deal with the most common stressful factor of arid lands (i.e. water availability); however, other morphological or physiological adaptations appear to be specific to each species, and should be the cause of niche differentiation among species and the occupation of particular environments within arid lands (e.g. sand dunes, saline environments). Finally, we discuss some consequences of these adaptations for the management of Prosopis species. The inter- and intra-specific variability observed in their adaptation to stressful factors suggest that some Prosopis species may be a good option to be used in the restoration of degraded areas or in afforestation projects with productive objectives.