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Phycological research v.66 no.3, 2018년, pp.161 - 166   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Densification of cyanobacteria from a lake leading to production of β‐cyclocitral and related volatile organic compounds and species change

Arii, Suzue (Graduate School of Environmental and Human Science and Faculty of Pharmacy, Meijo University, Nagoya, Japan ) ; Tsuji, Kiyomi (Chemistry Division, Kanagawa Prefectural Institute of Public Health, Chigasaki, Japan ) ; Tomita, Koji (Division of Hygienic Chemistry, Aichi Prefectural Institute of Public Health, Nagoya, Japan ) ; Hasegawa, Masateru (Graduate School of Environmental and Human Science and Faculty of Pharmacy, Meijo University, Nagoya, Japan ) ; Yamashita, Ryuji (Graduate School of Environmental and Human Science and Faculty of Pharmacy, Meijo University, Nagoya, Japan ) ; Bober, Beata (Graduate School of Environmental and Human Science and Faculty of Pharmacy, Meijo University, Nagoya, Japan ) ; Harada, Ken‐Ichi (Graduate School of Environmental and Human Science and Faculty of Pharmacy, Meijo University, Nagoya, Japan ) ;
  • 초록  

    SUMMARY The purpose of the present study was to demonstrate that the lysis with the blue color formation was caused by densification of the cyanobacteria, and related events of the species change in the cyanobacteria were induced by the resulting volatile organic compounds (VOCs), particularly β‐cyclocitral. In order to obtain a high cell density of cyanobacteria in the laboratory, a concentration technique (graduated cylinder method) using the buoyancy of the gas vesicles was successfully used. The collected scum contained mainly Dolichospermum spp. and Microcystis, and the dispersed cyanobacteria were concentrated in the surface layer after several hours and the concentration ratio became approximately 10. The concentrated cyanobacteria were gradually lysed, while some of the cyanobacteria sank to the bottom, which finally died and disappeared. This method has the additional advantage that it is possible to visualize the entire lysis process. During the concentration process, β‐cyclocitral and its oxidation products together with β‐ionone were significantly detected. Because β‐cyclocitral was easily oxidized to the corresponding carboxylic acid, the pH of the water in the graduated cylinder decreased to approximately 6. Under favorable conditions, lysis with the blue color from phycocyanin could be observed due to the acid stress. Overall, the results of the present study were consistent with the hypothesis that VOCs were produced when the cyanobacteria are highly dense, and that the lysis with the blue color formation occurs due to the higher density.


  • 주제어

    algal lysis .   blue color .   cell density.  

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