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THE DEFENSE OF PROTECTIVE SYSTEM IN TRAPELLA SINENSIS OLIVE UNDER Hg2 + , Cu2 + STRESS
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY
- Issue:
- 3
- DOI:
- 10.3321/j.issn:1006-687X.2002.03.005
- Key Word:
- 茶菱;保护酶系统;Hg2+;Cu2+
Abstract： 研究了不同ρ(Hg2+)、ρ(Cu2+)对茶菱(Trapella sinensis Olive)叶片和根部保护酶系统的影响,结果表明:随p(Hg2+)、ρ(Cu2+)的增加,膜透性增加,根部μ(O2)、b(H2O2)上升,A(SOD)、A(POD)、A(CAT)先升后降.Hg2+胁迫下,叶片μ(O2)、b(H 2O2)、λ(SOD)、λ(POD)先升后降,而λ(CAT)下降;Cu2+胁迫下,λ(SOD)先降后升,λ(POD)逐渐下降.茶菱保护酶系统对Hg2+的防御作用弱于Cu2+,叶的防御作用弱于根.图6参19
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