Osmolytes biosynthesis, non-enzymatic antioxidant activity and ions accumulation in Romanian halophytes

Autores UPV
Año
CONGRESO Osmolytes biosynthesis, non-enzymatic antioxidant activity and ions accumulation in Romanian halophytes

Abstract

Proline, glycine-betaine, total phenolics and flavonoids, and ions (calcium, sodium, potassium and magnesium) accumulation has been investigated in 13 Romanian halophytes collected from natural salinized areas. Limonium gmelinii (Willd.) Ktze (Plumbaginaceae), Lepidium cartilagineum (J. C. Mayer) Thell. ssp. crassifolium (Waldst.&Kit.) Thell. (Brassicaceae), Artemisia santonica L. and Inula britanica L. (Asteraceae) accumulate large amount of proline; these taxa vegetate in less salinized dry habitats. Almost of all Chenopodiaceae (Amaranthaceae) species significantly accumulate glycine-betaine, while the values of proline biosynthesis remain lower. Inula, Artemisia and Aster linosyris (L.) Bernh. also accumulate glycine-betaine, but these values placed below those determined for chenopods species. The higher content of total phenolics and total flavonoids was recorded in Asteraceae species (Aster, Inula and Artemisia), but this is perhaps specific to botanical family rather related to salinity. Nevertheless, all these species are xero-halophytes. No pattern was found in Chenopodiaceae species regarding the polyphenols accumulation; contrarily, the total flavonoids content was lower in all chenopods, comparatively with other species. No clear pattern was noticed regarding ions accumulation; high values of calcium and magnesium were recorded for Limonium; in two chenopods (Suaeda maritima (L.) Dumort., Salicornia europaea L.) increased sodium values were detected.