BIOPHILIC AND XENOBIOTIC PROPERTIES AS THE FACTORS OF ROOT UPTAKE ANDDISTRIBUTION OF ELEMENTS IN PLANT ORGANS

Root uptake and subsequent redistribution of three elements-cadmium, z inc, and phosphorus-in the organs of barley and oats are examined from the point of view of biophilic and xenobiotic properties of the eleme nts. The effectiveness of the mechanisms regulating root uptake and ma intaining a certain ratio of mineral nutrients in plants decreased wit h reduced biophilic properties of elements (and developing xenobiotic ones). The effectiveness of protection mechanisms controlling element redistribution in plant organs and influencing their accumulation in g enerative organs increased under the same conditions. When sewage slud ges were applied as fertilizers, element uptake by plants from the sod dy-podzolic loamy-sandy soil increased regularly with more pronounced biophilic properties of elements.