外源Ca(上标 2+)和H2O2对NaCl胁迫下枸杞离体叶片叶绿体中活性氧代谢的影响研究

In this study, the effects of exogenous calcium and H2O2 on the activity of oxygen (O2(superscript -)) themalondialdehyde content (MDA), the activity of superoxide dismutase (SOD), the activity of peroxide (POD), catalase (CAT) and antiscorbutic acid peroxide enzyme (APX) were examined in Lycium barbarum L. chloroplast under NaCl stress. The results indicated that, under NaCl stress, O2(superscript -) production rate and MDA content generally increased, meanwhile CAT and POD activities were also higher than those of control. When adding exogenous Ca(superscript 2 +) and H2O2 under NaCl stress, MDA content and O2(superscript -) production rate were slower than those of NaCl stress, while protecting enzyme APX, CAT and POD activities increased compared to NaCl stress. It indicated that exogenous Ca(superscript 2 +) and H2O2 alleviated NaCl stress injury to plants to some extent.