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Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (12): 1655-1658.

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Effects of 1, 2, 4-trichlorobenzene stress on active oxygen in germinated soybean seeds

LIU Wan, SUN Tieheng, LI Peijun, ZHOU Qixing, LIANG Wenqu, TAI Peidong, XU Huaxia, ZHANG Hairong   

  1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016
  • Received:2002-01-24 Revised:2002-04-24 Online:2002-12-15

Abstract: Pot culture experiment on the effects of 1,2,4 trichlorobenzene (TCB) stress on active oxygen metabolism of germinated soybean seeds indicated that during the beginning (1st~3rd day) of 100~300 μg·g-1 TCB treatment,the respiratory peak appeared earlier,and the respiratory rate,the accumulation of superoxide radical (O2-) and H2O2,as well as the malondialdehyde (MDA) content were all enhanced. During 1~6 days of TCBstress,peroxidase (POD) activity gradually increased,and superoxide dismutase (SOD) activity increased firstly,and decreased afterward. These results suggested that the injury effects of TCBstress on germinated soybean seeds were achieved by excessive accumulation of active oxygen resulted from the degradation of active oxygen scavenging enzyme system.

Key words: trichlorobenzene stress, Soybean seeds, Active oxygen, Membrane-lipid peroxidation, Antioxidant enzymes

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