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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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Citing This Article：

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).