Leaf injury and superoxide dismutase activity in spinach leaves exposed to SO2 and/or simulated acid rain

Abstract

Abstract: The studies show that under exposure to SO₂ and simulated acid rain spinach leaf contains less chlorophyll, its MDAcontent and conductivity are increased, and leaf ageing is accelerated. The SODactivity is decreased with increasing pH, and lossed by 50% at pH3.6 for SO₂ and simulated acid rain and at pH2.8 for simulated acid rain. The SODactivity of spinach leaves exposed to simulated acid rain is higher than that to SO₂ and simulated acid rain.

Key words: Acid rain, SO₂, Superoxide dismutase(SOD), Membrane permeability, NO, Ca, ROS, plant hormone, cadmium stress

Liu Yanyun, Cao Hongfa . Leaf injury and superoxide dismutase activity in spinach leaves exposed to SO₂ and/or simulated acid rain[J]. Chinese Journal of Applied Ecology, 1993, 4(2): 223-225.

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Leaf injury and superoxide dismutase activity in spinach leaves exposed to SO₂ and/or simulated acid rain

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