摘要
以条斑紫菜中叶绿素a含量、光合作用强度、SOD活性、POD活性、总抗氧化能力及可溶性蛋白含量等6项指标参数,研究分析了不同浓度Cd2+对条斑紫菜的胁迫作用.结果表明,用较低浓度Cd2+处理时,条斑紫菜的6项指标参数值均较对照组有一定的提高;随着Cd2+处理浓度的增加,6项指标参数值均开始下降,其中,处理浓度为5~100 mg/L时,光合作用强度、POD活性逐渐下降;处理浓度为10~100 mg/L时,叶绿素a含量、SOD活性、总抗氧化能力下降;处理浓度为20~100 mg/L时,可溶性蛋白含量下降.条斑紫菜对Cd2+具有较高的耐受性,但高浓度的Cd2+对条斑紫菜具有明显的胁迫作用.
This paper analyzes the effect of Cd^2＋ on 6 parameters of chlorophyll a content, photosythtic intensity, SOD, POD, total antioxicatability and soluble protein contents in Porphyra yezoensis. The result shows that in low Cd^2＋ concentration treatment, the 6 parameters are increased, but decreased with the increase of Cd^2＋ treatment concentration. Specifically, when treatment concentration reaches 5 ～100 mg/L, 5 ～100 mg/L, the intensity of photosynthesis and the activity of POD gradually decline; when treatment concentration 10～100 mg/L,the content of chlorophyll a, the activity of SOD and the omni oxidation resistance decline;when treatment concentration 20～100 mg/L, the content of solubility protein declines. Porphyra yezoensis has a higher tolerance to Cd^2＋ , and stressed in high concentration treatment of Cd^2＋.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第2期113-116,共4页
Journal of Henan Normal University(Natural Science Edition)
基金
江苏省教育厅自然科学研究基金资助项目(04KJD180070)
