植物学报 ›› 2016, Vol. 51 ›› Issue (1): 31-39.DOI: 10.11983/CBB15028

• 研究报告 • 上一篇    下一篇

苯酚废水对垂柳叶片光合生理参数的影响

李辉1, 张光灿1, 谢会成1,*(), 许景伟2, 李传荣1, 孙居文1   

  1. 1山东农业大学林学院/国家林业局泰山森林生态站/山东省土壤侵蚀与生态修复重点实验室, 泰安 271018
    2山东省林业科学研究院, 济南 250014
  • 收稿日期:2015-02-03 接受日期:2015-07-06 出版日期:2016-01-01 发布日期:2016-02-01
  • 通讯作者: 谢会成
  • 作者简介:

    ? 共同第一作者

  • 基金资助:
    基金项目: 林业公益性行业科研专项(No.201404030108)、国家自然科学基金(No.31170662)、山东省水利重大专项(No;SDSLKY201231) 和山东省自然科学基金联合专项(NoZR2015CL044)

The Effect of Phenol Concentration on Photosynthetic Physiological Parameters of Salix babylonica

Hui Li1, Guangcan Zhang1, Huicheng Xie1*, Jingwei Xu2, Chuanrong Li1, Juwen Sun1   

  1. 1Key Laboratory of Soil Erosion and Ecological Restoration of Shandong Province, Taishan Forest Eco-station of State Forestry Administration, Forestry College of Shandong Agricultural University, Taian 271018, China
    2Shandong Academy of Forestry, Jinan 250014, China
  • Received:2015-02-03 Accepted:2015-07-06 Online:2016-01-01 Published:2016-02-01
  • Contact: Xie Huicheng
  • About author:

    ? These authors contributed equally to this paper

摘要: 为探讨垂柳(Salix babylonica)对苯酚污染物的耐受程度及其应用于苯酚污染环境修复的可行性, 了解苯酚胁迫对垂柳光合作用生理过程的影响与限制机理, 采用水培模拟胁迫实验方法, 在5种苯酚溶液浓度(50、100、200、400和800 mg·L-1)下, 测定垂柳植株叶片光合气体交换及叶绿素荧光参数。结果表明, 苯酚对垂柳光合作用具有显著的抑制作用, 表现为叶片净光合速率(Pn)、最大光合速率(Pnmax)、光合量子效率(Φ)、PSII最大和实际光化学效率(Fv/FmФPSII)等均明显下降。苯酚胁迫浓度越高, 对垂柳光合作用的抑制程度越大; 苯酚胁迫限制光合作用主要由非气孔因素引起。将垂柳用于苯酚污染的水体环境修复时, 苯酚浓度应在200 mg·L-1以下, 否则垂柳的光合作用效能会明显降低。垂柳光合作用生理活性耐受苯酚胁迫的极限浓度还需进一步实验研究。

Abstract: To explore the phenol tolerance of Salix babylonica and the feasibility of its remediation of phenol pollution, we determined the effect of phenol stress on photosynthetic physiology of S. babylonica and its limit mechanism, photosynthesis and chlorophyll fluorescence parameters of cut seedlings of S. babylonica in five phenol concentrations (50, 100, 200, 400 and 800 mg·L-1) using hydroponics. Phenol inhibited the photosynthesis of S. babylonica significantly, which presented as significantly decreased net photosynthesis rate (Pn), maximum net photosynthesis rate (Pnmax), photosynthetic quantum efficiency, maximum quantum yield of PS II (Fv/Fm) and actual photochemical efficiency (ФPSII). The higher the concentration of phenol, the greater the photosynthetic inhibition. Non-stomatal limitation was responsible for reduced net photosynthesis rate (Pn). When S. babylonica was used to phytoremediate the water environment, the concentration of phenol should be < 200 mg·L-1. Otherwise the efficiency of photosynthesis of S. babylonica was markedly decreased. The limit of phenol concentration that photosynthetic physiological activity of S. babylonica can tolerate needs further experimental study.