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林业科学 ›› 2006, Vol. 42 ›› Issue (11): 8-11.doi: 10.11707/j.1001-7488.20061102

• 论文及研究报告 • 上一篇    下一篇

模拟酸雨对假俭草叶绿素荧光特性的影响

马博英1 徐礼根2 蒋德安2   

  1. 1.浙江教育学院生物系,杭州310012;2.浙江大学生命科学学院植物生理与生物化学国家重点实验室,杭州310058
  • 收稿日期:2005-11-17 修回日期:1900-01-01 出版日期:2006-11-25 发布日期:2006-11-25

Effects of Simulated Acid Rain on Chlorophyll Fluorescence Characteristics in Eremochloa ophiuroides

Ma Boying1,Xu Ligen2,Jiang De'an2   

  1. 1.Department of Biology,Zhejiang Education Institute Hangzhou 310012;2.State Key Lab.of Plant Physiology and Biochemistry,College of Life Sciences,Zhejiang University Hangzhou 310058
  • Received:2005-11-17 Revised:1900-01-01 Online:2006-11-25 Published:2006-11-25

摘要:

研究模拟酸雨(pH2.5、pH3.0)对假俭草叶绿素荧光特性的影响。结果表明:酸雨6h胁迫引起假俭草PSⅡ最大光化学效率(Fv/Fm)、PSⅡ潜在活性(Fv/F0)、光化学猝灭系数(qP)、PSⅡ电子传递量子产率(ФPSⅡ)、光合电子传递速率(ETR)和非光化学猝灭系数(NPQ)下降,pH2.5处理比pH3.0处理的下降幅度大;酸雨处理停止24h后,Fv/FmFv/F0qP、ФPSⅡETR、NPQ回升;酸雨处理停止48h后,回升至接近对照。研究还表明,利用非损伤的叶绿素荧光技术可快速检测草对环境因子变化的响应。

关键词: 模拟酸雨, 假俭草, 叶绿素荧光

Abstract:

Eremochloa ophiuroides was used to study the effects of acid rain stress on chlorophyll fluorescence characteristics.The results showed that maximal photochemical efficiency of PSⅡ(Fv/Fm),potential activity of PSⅡ(Fv/F0),photochemical quenching(qP),quantum yield of PSⅡ electron transport(ΦPSⅡ),electron transport rate of PSⅡ(ETR),non-photochemical quenching(NPQ)in leaves were reduced after 6 h stress with acid rain.The decline of above parameters in treatment with pH 2.5 were faster and larger than that with pH3.0.Fv/FmFv/F0qP、ФPSⅡETR、NPQ in treatment began to be gradually recovered after the treatment ended for 24 h,and up to the level of control after the treatment ended for 48 h.The results also demonstrated the potential use of this fast and noninvasive techniques——chlorophyll fluorescence to screen for different acid rain tolerant genotypes and to detect the physiological response of grasses to different environmental factors.

Key words: simulated acid rain, Eremochloa ophiuroides, chlorophyll fluorescence