Inhibition of Motility in the Cyanobacterium, Phormidium uncinatum, by Solar and Monochromatic UV Irradiation

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概要

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• The effect of solar radiation and monochromatic UV radiation on the motility of the filamentous cyanobacterium Phorrnidium uncinatum was determined. Solar radiation (mid-day, in midsummer at a location near Lisboa, Portugal) was found to impair motility within about 30 min. This effect is neither a result of a temperature increase nor of visible light. The spectral sensitivity determined using the Okazaki large Spectrograph shows the maximal effectiveness of radiation of ≤300 nm. The short time requirement for the response and the lack of any photoreactivation of motility argues against DNA being the UV target. Investigations using reagents diagnostic of super-oxide free radicals and singlet oxygen failed to confirm the involvement of photodynamic effects as the molecular mechanism causing UV inhibition of motility.

• 日本植物生理学会の論文

著者

• Furuya Masaki

  Frontier Research Programs Riken Institute

• Furuya Masaki

  Frontier Research Programs Riken

• WATANABE Masakatsu

  National Institute of Basic Biology (NIBB)

• Watanabe Masakatsu

  National Institute For Basic Biology Okazaki National Research Institutes

• Watanabe Masakatsu

  National Institute For Basic Biology

• Hader Donat-P.

  Philipps-Universitat, Fachbereich Biologie, Botanik

• Furuya Masaki

  National Institute for Basic Biology, Okazaki National Research Institutes

• Hader Donat-p.

  Philipps-universitat Fachbereich Biologie Botanik

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