Ultraweak Luminescence Generated by Sweet Potato and Fusarium oxysporum Interactions Associated with a Defense Response |
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| Authors: | Takahiro Makino Kimihiko Kato Hiroyuki Lyozumi Hiroe Honzawa Yoshiaki Tachiiri Mitsuo Hiramatsu † |
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| Institution: | laboratory of Plant Pathology, Shizuoka Agricultural Experiment Station, Tomigaoka, Toyoda-cho Iwata, Japan;Central Research Laboratory, Hamamatsu Photonics K. K., Hirakuchi, Hamakita, Japan |
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| Abstract: | Abstract— Ultraweak luminescence generated by sweet potato and nonpathogenic Fusarium oxysporum interactions associated with a defense response was detected by a photoncounting 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. |
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