ANTIOXIDATIVE RESPONSES IN RADISH (RAPHANUS SATIVUS L.) PLANTS STRESSED BY COPPER AND LEAD IN NUTRIENT SOLUTION AND SOIL

作者：Teklic Tihana^*; Hancock John T; Engler Meri; Paradikovic Nada; Cesar Vera; Lepedus Hrvoje; Stolfa Ivna; Beslo Drago

来源：Acta Biologica Cracoviensia Series Botanica, 2008, 50(2): 79-86.

• Catalase
• copper
• hypocotyl
• guaiacol peroxidase
• heavy metals
• lead
• leaf
• oxidative stress
• proline
• Raphanus sativus L.
• radish

Radish (Raphanus sativus L.) is commonly grown ill urban and Suburban areas where the soil may be polluted with heavy metals such as Cu or Pb. In this study, short exposure of radish plantlets to 0.5 mM Cu or Pb ill nutrient solution (two days) ill growth chamber conditions elicited all antioxidative response. measured ill terms of lipid peroxidation. protein and prolific accumulation, and peroxidase and catalase activity. Longer exposure to Cu or Pb when radish was grown outdoors for 50 days ill pots filled with field soil with different Cu and Pb content also resulted ill higher lipid peroxidation and proline accumulation, and altered protein content and enzyme activity. The tested parameters of radish antioxidative responses to heavy metal stress differed depending oil plant part (leaf or hypocotyl) and stress intensity (heavy metal content in growth medium, exposure duration). The reported data show that plants grown ill soil from sites where this crop Could be cultivated do show all oxidative stress response similar but not identical to that seen under laboratory treatment with heavy metals.

• 出版日期2008