Primi Dati Sulla Localizzazione Istologica Del Nichel inAlyssum BertoloniiDesv

Abstract

First data on the histological localization of nickel in « Alyssum bertolonii » Desv. — Histochemical tests have been carried out to locate nickel in the stems of « Alyssum bertolonii » Desv., a serpentinophyte which concentrates exceptionally high quantities of this element. The red Ni-dimethylglyoxime complex shows a very intense colour in the epidermis and in the sclerenchymatic areas placed between the vascular bundles, pointing out a preferential localization of this element in these tissues. Further research on this subject is being carried on.