Stress Responsive Gene for UV-A in Marine Cyanobacterium Oscillatoria sp

  • Tadashi Matsunaga
  • Akira Yamazawa
Chapter

Abstract

Recently, we have isolated a new type of UV-A resistant marine cyanobacteria Oscillatoria sp. which grow under UV A irradiation and produce bioputerin as an UV-A absorbing pigment (Matsunaga et al., 1993). This pigment was related to the pterine pigments found in butterfly wings UV-A sensitive isolates did not produce significant levels of this chromophore. UV-A radiation was very effective in eliciting biopterin glucoside synthesis, in which intracellular level of biopterin glucoside was correlated with the intensity of UV-A. These results suggested that biopterin glucoside may protect the cyanobacterium from adverse effects of UV-A irradiation. Furthermore, the effect of an UV-A light intensity on cell growth, biopterin glucoside production and photosynthetic activity was investigated (Wachi et al., 1995). The marine Oscillatoria sp. NKPB 091600 could grow at UV-A intensities of up to 800 µW·cm −2 and could grow at 300 µW·cm −2 as well as in the absence of UV-A irradiation. The photosynthetic activity of pre-cultured cells with UV-A was protected well from UV-A induced inhibition. It was demonstrated that a rapid increase in bioterin glucoside content was observed after 10 hr under UV-A radiation.

Keywords

Photosynthetic Activity Northern Hybridization Marine Cyanobacterium Butterfly Wing Sensitive Isolate 
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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References

  1. Matsunaga, T., et al., 1993, Applied Microbiology and Biotechnology 39: 250–253Google Scholar
  2. Wachi, Y., et al., 1995, Biochimica et Biophysica Acta 1244: 165–168PubMedCrossRefGoogle Scholar
  3. Yamazawa, A., et al., submittedGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Tadashi Matsunaga
    • 1
  • Akira Yamazawa
    • 1
  1. 1.Department of BiotechnologyTokyo University of Agriculture and TechnologyKoganei, Tokyo 184Japan

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