| Changes of Protective Enzymes and Accumulation of Polyamines Induced by Boron Deficiency in Roots of Rape Seedlings |
| XIAOFENGHUI |
| 关键词：硼 液体过氧化作用 聚胺 保护酶 油菜苗 过氧化物酶 |
| 主要内容：The effects of boron deficiency on the membrane permeability,the lipid peroxidation of membrane ,the activities of the protective enzymes and the accumulation of polyamines in the roots of rape (Brassica napus L.cv Zhongyou 821)plants were examined using solution culture experiment .Compared to the 20 mmol B m^-3 treatment ,boron-deficient treatment( 2 mmol B m^-3) decreased root dry weight and increased the rate of solute leakage and malondialdehyde (MDA) concentration in the roots of rape.Similar patterns of change were observed in the level of lipid peroxidation (MDA concentration) and the rate of solute leakage under boron deficiency.Results suggested that a signifcant alteration of membrane composition had occurred under B deficiency.The concentration of putrescin and the ration of putrescine to spermidine +spermine in the roots of rape increaed significantly,and the activities of superoxide dismutase and catalase decreased in the roots of rape during B deficiency,But peroxidase activity in root of B-defcient plant was higher than that of control plant. |
| 《土壤圈：英文版》 1998,8(3).-229-236 |
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