弱光对樱桃叶片膜脂过氧化的影响
黄卫东;吴兰坤;战吉宬
【期刊名称】《植物学报（英文版）》 【年(卷),期】2002(044)008
【摘要】以无性繁殖的一年生莱阳矮樱桃( Prunus pseudocerasus L. \幼苗为试材,研究了弱光对樱桃叶片膜脂过氧化的影响.结果表明:随着光照强度的减弱,樱桃叶片的净光合速率降低;而MDA含量和膜保护酶活性在弱光下也发生明显变化,其中MDA含量和POD活性上升;CAT活性下降;SOD在366 μmol*m-2*s-1和533.8 μmol*m-2*s-1光强下活性升高,而在228.8 μmol*m-2*s-1和83.9 μmol*m-2*s-1光强下活性下降.%The effect of weak light on the peroxidation of membrane-lipid of one-year-old cherries ( Prunus pseudocerasus L. \The results showed that the net photosynthetic rate of cherry leaves under weak light was remarkably lower; the activity peroxidase (POD) increased when light intensity decreased; the activity of catalase (CAT) showed an opposite trend, and it was positively correlated with light intensity; the activity of superoxide dismutase (SOD) increased under 366 μmol*m-2*s-1 and 533.8 μmol*m-2*s-1 light intensity, but decreased under 228.8 μmol*m-2*s-1 and 83.9 μmol*m-2*s-1 light intensity. A remarkable increase of malondialdehyde (MDA), a product of membrane-lipid peroxidation, was also observed in cherry leaves when treated with weak light, indicating more serious peroxidation in
弱光对樱桃叶片膜脂过氧化的影响
