Chapter

Photosynthesis. Energy from the Sun

pp 1339-1342

Allelopathic Inhibition by Scenedesmus obliquus of Photosynthesis and Growth of Microcystis aeruginosa

  • Xiao-Hui JiaAffiliated withCollege of Life Sciences, Capital Normal University
  • , Ding-Ji ShiAffiliated withSchool of Marine Science & Engineering, Tianjin University of Science of TechnologyInstitute of Botany, Chinese Academy of Sciences
  • , Rui-Juan KangAffiliated withInstitute of Process Engineering, Chinese Academy of Sciences
  • , Hui-Min LiAffiliated withCollege of Life Sciences, Capital Normal University
  • , Yu LiuAffiliated withSchool of Marine Science & Engineering, Tianjin University of Science of Technology
  • , Zhen-Zhen AnAffiliated withCollege of Life Sciences, Capital Normal University
  • , Si-Si WangAffiliated withSchool of Marine Science & Engineering, Tianjin University of Science of Technology
  • , Dong-Hui SongAffiliated withSchool of Marine Science & Engineering, Tianjin University of Science of Technology
  • , Gui-Sen DuAffiliated withCollege of Life Sciences, Capital Normal University

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Abstract

Microcystis aeruginosa is a species of unicellular cyanobacterium which synthesizes toxic microcystin. This work reports that the photosynthesis and growth of M. aeruginosa is inhibited by Scenedesmus obliquus when the two species are cultivated in BG-11 medium, even when the ratio of cell numbers between S. obliquus and M. aeruginosa is reduced to 1:100, or when M. aeruginosa was cultivated in a filtered medium in which S. obliquus had previously grown. As a result, the net photosynthesis and chlorophyll a content of M. aeruginosa decreased.

Keywords

Allelopathy photosynthesis growth scenedesmus obliquus Microcystis aeruginosa