摘要
野外调查了棱角山矾抗SO2大气污染的生长状况,为探讨其抗性机理,进行了室内外加HSO3-处理试验,测定了SOD酶活性、叶绿素含量、硫含量和细胞液pH值及其缓冲能力。结果表明:棱角山矾对SO2污染物具有较强的抗性和吸收能力,其抗性机理可能与树体受污染后SOD酶活性的升高和细胞液的pH缓冲能力有关。
The activity of superoxide dismutase （ SOD ）, content of chlorophyllans element S in the leaves of Symplocos tetragona treated with 10 mmol/L NaHSO3 , and pH buffering capacity in cell sap were determined in order to explore the resistance mechanism of S. tetragona to SO2 pollutant in this paper. The results showed that S. tetragona had stronger resistance and absorption to SO2 pollutant in the air. And its resistance mechanism was probably related to the pH buffering capacity and the increase of SOD activity in the leaves.
出处
《林业科技开发》
2009年第5期57-59,共3页
China Forestry Science and Technology
基金
浙江省宁波市重点攻关项目(编号:2004C1000016)
关键词
棱角山矾
SOD酶活性
酸碱缓冲能力
抗性机理
Symplocos tetragona
SOD activity
pH buffering capacity
Resistance mechanism
