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Chinese Science Bulletin

, Volume 52, Issue 19, pp 2636–2641 | Cite as

Responses of rice growth to copper stress under free-air CO2 enrichment (FACE)

  • Jia HaiXia 
  • Guo HongYan 
  • Yin Ying 
  • Wang Qiang 
  • Sun Qin 
  • Wang XiaoRong 
  • Zhu JianGuo 
Articles Environmental Chemistry

Abstract

The responses of rice to the second degree contamination of copper were studied by pot experiments under free-air CO2 enrichment (FACE) with 570 μmol·mol−1 of CO2. The results showed that the content of copper in rice leaves was reduced with the CO2 concentration reaching 570 μmol·mol−1 and this happened more significantly under the second degree contamination of copper. Under FACE, activities of superoxide dismutase (SOD) enzyme in rice leaves treated by copper contamination were induced, whereas the contents of glutathione (GSH) and glutathione disulfide (GSSG) had no significant difference from the control. In the presence of ambient CO2, activities of SOD enzyme treated by copper pollution were suppressed during the whole rice growth, however, the contents of GSH and GSSG were induced at tillering and jointing stages, and then restored to the control levels in later growth under the second degree contamination of copper. With the rice growing, the content of malondialdehyde (MDA) rises continuously, but there had been no significant difference between the treatments at the same growth stage. Further studies are needed on the response mechanism of rice to Cu stress under elevated CO2.

Keywords

FACE (free-air CO2 enrichment) rice soil contamination copper SOD GSH MDA 

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Copyright information

© Science in China Press 2007

Authors and Affiliations

  • Jia HaiXia 
    • 1
  • Guo HongYan 
    • 1
    • 2
  • Yin Ying 
    • 1
  • Wang Qiang 
    • 1
  • Sun Qin 
    • 1
  • Wang XiaoRong 
    • 1
  • Zhu JianGuo 
    • 2
  1. 1.State Key Laboratory of Pollution Control and Resources Reuse, School of EnvironmentNanjing UniversityNanjingChina
  2. 2.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil ScienceChinese Academy of SciencesNanjingChina

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