Effects of Cadmium, Nickel and Mercury on the Peroxidase Isozymes of Hordeum vulgare

doi:10.3321/j.issn:1000-7091.2000.01.006

Abstract

Abstract: By using vertical polyacrylamide gel electrophoresis, the effects of three heavy metals at different concentrations on the peroxidase isozymes of barley root cells were studied. The results indicated that after 24 h treatment with 10^-4mol/LCd²⁺ and Hg²⁺, one additional band (Rf=0.36) increased for each treatment, but a band (Rf=0.80) was missing in the former comparison with the control. After the treatment with 10^-6mol/L Hg²⁺ for 48h, the treatment group added another band (Rf=0.36). The activites of peroxidase isozymes were changed greatly at rest concentrations ofCd²⁺、Hg²⁺ and 10^-4~10^-8mol/L Ni²⁺ treatment groups. It suggested that Hg²⁺ andCd²⁺ have stronger effects on the peroxidase isozymes than Ni²⁺ and the degree of effects of heavy metals on the peroxidase isozymes is dependent on their concentrations and treatment durations.

Key words: Cadmium, Nickel, Mercury, Peroxidase isozymes, Hordeum vulgare

CLC Number:

S512.301

ZHANG Yixian, LEI Xiaobo, YAN Jiyao. Effects of Cadmium, Nickel and Mercury on the Peroxidase Isozymes of Hordeum vulgare[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(1): 27-31. doi: 10.3321/j.issn:1000-7091.2000.01.006.

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