Effect of ultraviolet-B irradiation on lipid peroxidation in spinach leaves

文献类型： 外文期刊

第一作者： Huang, SB

作者： Huang, SB;Liu, XZ;Dai, QJ;Wang, ZX

作者机构： Jiangsu Acad Agr Sci, Inst Agrobiol Genet & Physiol, Nanjing 210014, Peoples R China

关键词： spinach;ultraviolet-B;flavonoids;lipid peroxidation;anti-oxidative enzymes

期刊名称：ACTA BOTANICA SINICA （ 2006影响因子：0.599； ）

ISSN： 0577-7496

年卷期： 1998 年 40 卷 6 期

页码：

收录情况： SCI

摘要： Spinach (Spinacia oleracea Mill.) cultivar "Huabo No. 1" was grown in an indoor environment and treated with 13.0 kJ.m(-1).d(-1) of ultraviolet-B (UV-B 280 to 320 nn) to study the effect of UV-B irradiation on flavonoids and lipid peroxidation in spinach leaves. The results showed that enhanced UV-B irradiation decreased the leaf fresh weight and the content of soluble protein and chlorophyll, and induced large accumulation of UV-absorbing flavonoids in the leaves. UV-B irradiation also promoted the production of superoxide radicals (O-2((.) over bar)) and malondialdehyde in spinach leaves. However, the ascorbic acid (AsA) level was decreased under UV-B treatment. It was interesting that high peroxidase (POX), superoxide dismutase (SOD) and catalase (CAT) activities in spinach leaves were induced by W-B irradiation, the former two being more sensitive. It was suggested that UV-B induced the accumulation of O-2((.) over bar) resulting in the Lipid peroxidation and in turn inhibiting the growth of spinach. However, the increase of UV-absorbing flavonoids and anti-oxidative enzymes induced by high accumulation of O-2((.) over bar) could not reverse the process of UV-B damage.

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