生态与农村环境学报 ›› 2004, Vol. 20 ›› Issue (1): 60-64.doi:

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低浓度SO2熏气对油桐幼苗光系统结构和功能的影响

廖飞勇, 何平, 谢瑛   

  1. 中南林学院环境艺术设计学院
  • 收稿日期:2003-03-21 出版日期:2004-01-25 发布日期:2011-11-03
  • 通讯作者: 何平 中南林学院环境艺术设计学院
  • 作者简介:廖飞勇(1973-),男,湖南安化人,中南林学院讲师,博士,主要从事生态学和植物生理生态学研究。
  • 基金资助:

    国家自然科学基金资助项目 ( 39670599)

Effect of fumigation with low concentration SO2 on structure and function of the photosystem of tungoiltree(Vernicia fordii) saplings

 LIAO  Fei-Yong, HE  Ping, XIE  Ying   

  1. Environmental Art Design College,Central South Forestry University
  • Received:2003-03-21 Online:2004-01-25 Published:2011-11-03
  • Contact: HE Ping Environmental Art Design College,Central South Forestry University

摘要: 采用开顶式熏气装置 ,以浓度为 0 85 71mg·m-3 的SO2 对二三年生的油桐 (Verniciafordii)幼苗进行 118d熏气试验。结果表明长期低浓度SO2 熏气处理引起光化学猝灭、非光化学猝灭、表观光合电子传递速率 (ETR)下降 ,荧光产量 (Ft)增加 ,光系统Ⅱ (PSⅡ )的光能转换效率和潜在活性下降 ;光系统Ⅰ (PSⅠ )的潜在活性和光能转换效率也下降。因此认为 :长期低浓度SO2 熏气处理引起PSⅠ和PSⅡ结构破坏 ,导致光系统光能转换效率和系统潜在活性的下降。 

关键词: SO2, 光系统, 功能, 油桐

Abstract: Structure and function of the photosystem of tungoiltree(Vernicia fordii)saplings were determined after the saplings had been subjected to long-term(118 d)fumigation with low concentration(0.857 1 mg·m-3 SO2.The results show that the fumigation led to decrease in photochemical quenching,non-photochemical quenching and apparent photosynthetic electron transport rate(ETR),but to increase in fluorescence output.The results also show that the light conversion efficiency and potential activity of the photosystem Ⅱ(PSⅡ)and photosystem Ⅰ(PSⅠ)decreased with SO2 fumigation.It can,therefore,be concluded that the long fumigation with low concentration SO2 resulted in destruction of the structure of PSⅠ and PSⅡ,thus causing decrease in total light conservation efficiency and potential activity of the photosystem.

Key words: SO2, photosystem, function, Vernicia fordii

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