Comparative Analysis of Tolerance to Salt Stress and Water Deficit in Two Invasive Weeds of the Genus (Asteraceae).

and are two noxious weeds present in many parts of the world. Their tolerance to salinity and water deficit was analysed at the seed germination stage and during vegetative development. Seed germination was tested in solutions with different concentrations of NaCl and polyethylene glycol (PEG).

Responses to Increased Salinity and Severe Drought in the Eastern Iberian Endemic Species (Ranunculaceae), Threatened by Climate Change.

is an endangered, endemic species in East Spain, growing in areas of relatively low salinity in littoral salt marshes. A regression of its populations and the number of individuals has been registered in the last decade. This study aimed at establishing the causes of this reduction using a multidisciplinary approach, including climatic, ecological, physiological and biochemical analyses.

Qualitative and Quantitative Differences in Osmolytes Accumulation and Antioxidant Activities in Response to Water Deficit in Four Mediterranean Species.

is a genus represented in the Iberian Peninsula by numerous halophytic species that are affected in nature by salinity, and often by prolonged drought episodes. Responses to water deficit have been studied in four Mediterranean species, previously investigated regarding salt tolerance mechanisms. The levels of biochemical markers, associated with specific responses-photosynthetic pigments, mono- and divalent ions, osmolytes, antioxidant compounds and enzymes-were determined in the control and water-stressed plants, and correlated with their relative degree of stress-induced growth inhibition.