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镍处理对水稻叶片H_(2)O_(2)积累和抗病的诱导效应

王海华, 曾富华, 康健, 易克

湘潭师范学院生物系.湖南,湘潭 411201；湛江师范学院生物系.广东,湛江 524048

摘要

2.20mmol/L的硝酸镍处理水稻幼苗d3用稻白叶枯菌(Xanthomonas oryzae pv. oryzae)挑战接种,硝酸镍处理的稻苗病情比对照明显减轻,并且叶片中过氧化物酶(POD)活性上升,过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)活性明显下降,H_(2)O_(2)和丙二醛(MDA)含量显著增加。这些结果表明,H_(2)O_(2)积累与镍诱导的抗病作用密切有关。

关键词： 水稻; 镍; 过氧化氢; 诱导抗性

Effect of nickel treatment on H_(2)O_(2) accumulation and induced resistance to Xanthomonas oryzae pv. oryzae in rice leaf

Wang Haihua, Zeng Fuhua, Kang Jian, Yi Ke

Department of Biology,Xiangtan Normal College.Xiangtan 411201,Hunan；China

Abstract

The severity of bacterial blight was significantly reduced when rice seedlings were pre-treated with 2.20 mmol/L nickel nitrate 3 d before challenge inoculation with Xanthomonas oryzae pv. oryzae strain 76-25. Concurrently, the activity of leaf POD increased, whereas activities of CAT and APX declined significantly H_(2)O_(2) and MDA tended to accumulate in the leaves following nickel nitrate treatment. The results suggested a close relationship between the resistance to Xanthomanas oryzae pv. oryzae induced by nickel nitrate and changes in the above-mentioned enzymes and products were involved.

Key words: Rice;Nickel;H_(2)O_(2);Induced resistance

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引用本文：

王海华, 曾富华, 康健, 易克. 镍处理对水稻叶片H_(2)O_(2)积累和抗病的诱导效应[J]. 生理学报 2001; 53 (1): .

Wang Haihua, Zeng Fuhua, Kang Jian, Yi Ke. Effect of nickel treatment on H_(2)O_(2) accumulation and induced resistance to Xanthomonas oryzae pv. oryzae in rice leaf. Acta Physiol Sin 2001; 53 (1): (in Chinese with English abstract).