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Biophotons pp 45-55 | Cite as

Biophotons and Defense Response in Plants

  • M. Hiramatsu
Chapter

Abstract

Two-dimensional imaging of ultraweak emissions from intact bean sprouts and soybean roots was achieved by a photon counting imager with ultrahigh sensitivity. As an new application of a use of ultraweak luminescence, we have studied plant-fungus interactions to reveal the nature of the defense responses. Ultraweak luminescence generated by sweet potato and nonpathogenic Fusarium oxysporum interactions associated with a defense response was detected by a photon counting method using ultrahigh-sensitive photodetectors. The time-dependent intensity variation, the spectrum and the two-dimensional imaging of the ultraweak luminescence are indicative of the defense response of the sweet potato to F. oxysporum. The production of ipomeamarone as a phytoalexin means that F. oxysporum induced the defense response in the sweet potato.

Keywords

Defense Response Sweet Potato Fusarium Oxysporum Photon Counting Soybean Root 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1998

Authors and Affiliations

  • M. Hiramatsu
    • 1
  1. 1.Central Research LaboratoryHamamatsu Photonics K. K.Hirakuchi, Hamakita, 434Japan

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