Chinese Journal of Magnetic Resonance

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THE ESR RESEARCH ON THE STABILITY OF NITROXIDE FREERADICAL IN PLANT

LIU Li-hui, CAO Yuan-lin, ZHANG De-liang, ZHAO Bao-lu*   

  1. Institute of Biophysics, The Chinese Academy of Sciences, Beijing 100101
  • Received:2001-01-21 Revised:2001-03-26 Published:2001-06-05 Online:2001-06-05
  • About author:*Corresponding author
  • Supported by:

    国家自然科学基金(重点资助项目)29935080.

Abstract:

In order to reasonably use nitroxides in plant, We compared the stability of several nitroxide compounds in plant. Under the same condition, the compound was lead into plant though soaking in the diluted solution. At different time, the ESR spectra of different parts of plant were measured and the growth
 status of plant were observed. The characters of spin probes, which can exist steadily in plant with high signal and less toxicity are found. Usually they are
derivatives of pyrrolidine with small molecular weight. From the kinetic curves and growth states of the plant, it was found that the concentration of 10-4 mol/L of spin probe was proper for using. The results are helpful for the development of plant ESR imaging and may be developed to a new method for me
asuring plant physiology.

Key words: ESR, Spin Probe, Plant, Stability, Free radical

CLC Number: