The Role of Malate, Oxalate, and Mustard Oil Glucosides in the Evolution of Zinc‐Resistance in Herbage Plants

摘要: Malate, oxalate and mustard oils were analysed in zinc-resistant zinc-sensitive ecotypes of Silene cucubalus Wib., Rumex acetosa L., Thlaspi alpestre L. Agrostis tenuis Sibth. The effect zinc on the activities carbonic anhydrase peroxidase Siiene was tested. Carbonic stimulated by addition vivo high amounts zinc. activity non-zinc-resistant after documented a poisoning sensitive plants amount differed greatly between ecotypes. There was, however, no direct correlation zinc-resistance oxalate. When applying to nutrient medium, synthesis inhibited zinc-sensitive, but acetosa. In concentrations oil glucosides found. Zinc-resistant produced twice as much ones. A possible role is discussed. content malate there great quantitative differences plants. All all species contained higher their green organs than It assumed that major factor evolution zinc-resistance. Malate may act complexing agent for within plasma, whereas function “terminal acceptors” large be extended special transport mechanism, which eliminated from plasma into vacuole.