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高浓度臭氧对蒙古栎叶片酚类物质含量和总抗氧化能力的影响

张国友1,2;何兴元1;唐玲1,2;颜坤1,2;陈玮1;徐胜1;李响1,2   

  1. 1中国科学院沈阳应用生态研究所, 沈阳 110016;2中国科学院研究生院, 北京 100049
  • 收稿日期:2008-08-06 修回日期:1900-01-01 出版日期:2009-03-20 发布日期:2009-03-20

Effects of elevated ozone on phenolic substances content and total antioxidative capacity of Quercus mongolica leaves.

ZHANG Guo-you1,2;HE Xing-yuan1;TANG Ling1,2;YAN Kun1,2;CHEN Wei1,2;XU Sheng1;LI Xiang1,2   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-08-06 Revised:1900-01-01 Online:2009-03-20 Published:2009-03-20

摘要: 采用开顶箱(OTC)法,研究了高浓度臭氧(80±8 nmol·mol-1)熏蒸处理对蒙古栎叶片 中总酚、类黄酮、单宁及丙二醛(MDA)含量的影响,使用1,1-二苯基苦基苯肼(DPPH) 法测定了蒙古栎叶片的总抗氧化能力.结果表明:蒙古栎叶片中总酚、类黄酮、缩合单宁和MDA的含量都有所增加,其中总酚和缩合单宁含量分别增加了48.17%和26.77%,差异显著(P<0.05);类黄酮和MDA含量分别增加了24.66%和5.26%,差异不显著(P>0.05);蒙古栎叶片总抗氧化能力显著增强(P<0.05),且与叶片中总酚和缩合单宁含量呈显著的正相关关系.

关键词: 滴灌, 土壤含水率, 土壤水分传感器, 杨树人工林, 沟灌, 生产力

Abstract: An open-top chamber experiment was conducted to examine the effects o f elevated atmospheric O3 (80±8 nmol·mol-1) on the total phenols, flav onoid, condensed tannin, and MDA contents, and the total antioxidative capacity of Quercus mongolica leaves. Elevated O3 increased the contents of tota l phenols and condensed tannin by 4817% and 2677% (P<005), and the fla vonoid and MDA contents by 2466% and 526% (P>005), respectively. The t otal antioxidant capacity of Q. mogonlica leaves determined by DPPH method w as enhanced significantly (P<005), and had an obvious linear relationship with the contents of total phenols and condensed tannin.

Key words: poplar plantation, furrow irrigation, productivity, drip irrigation, soil moisture sensor, soil moisture content