Growth Inhibition of Microcystis Cyanobacteria by L-Lysine and Disappearance of Natural Microcystis Blooms with Spraying
スポンサーリンク
概要
- 論文の詳細を見る
Low concentrations of L-lysine and L-lysine-containing-peptides strongly inhibited the growth of axenic strains of 4 species belonging to the genus Microcystis (cyanobacteria). Inhibitory activities decreased in the order of L-lysine>tri-L-lysine>di-L-lysine>α-poly-L-lysine>L-lysyl-L-histidine>L-lysyl-L-alanine. The addition of 50 μM of L-lysine to growing cells of axenic strains of M. novacekii TAC20-1 and M. viridis NIES102 resulted in a loss of buoyancy, a decrease in chlorophyll a content and consequent cell lysis. The cells took up most of the L-lysine added to the culture medium of M viridis NIES-102 in one day. However, the amino acid was released back into the medium with cell lysis 3 days after the addition. Laboratory results were confirmed in experimental ponds outdoors by spraying L-lysine onto natural Microcystis blooms in the summer of 1999 and 2000. The spraying of 50 μM L-lysine caused Microcystis colonies to vanish from the surface water within two days; there was a dramatic change in the color and transparency of the pond surface water. After the immediate disappearance of Microcystis sp., both Euglena sp. and/or Phormidium tenue appeared, the latter becoming the dominant species in the phytoplankton community of the pond. In the experiment in summer 2000, the L-lysine provided to the pond was assayed. The level decreased gradually and L-lysine was not detected in the pond water after 6 days. The mechanisms of growth inhibition by L-lysine and a possible mitigation of Microcystis blooms by the amino acid are discussed.
- 日本微生物生態学会の論文
著者
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Yamada Takashi
Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima Uni
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Yamada Takashi
Department Of Chemistry Faculty Of Science And Engineering Konan University
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Yamada Takashi
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Yagi O
Research Center For Water Environment Technology Graduate School Of Engineering The University Of To
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Yagi Osami
Water And Soil Environmental Studies
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TAKAMURA YOSHICHIKA
Department of Bioresource Science, Faculty of Agriculture, Ibaraki University
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KIMOTO AKIKO
Department of Bioresources Sciences, School of Agriculture, Ibaraki University
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KANEHAMA NAOMI
Department of Bioresources Sciences, School of Agriculture, Ibaraki University
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TANAKA TETSUYA
Mechanical Engineering Research Laboratory and Power & Industrial Systems, Hitachi Ltd., Tsuchiura D
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NAKADAIRA SHIRO
Mechanical Engineering Research Laboratory and Power & Industrial Systems, Hitachi Ltd., Tsuchiura D
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YAGI OSAMI
Research Center for Water Environment Technology, Graduate School of Engineering, The University of
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Kimoto Akiko
Department Of Bioresources Sciences School Of Agriculture Ibaraki University
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Kanehama Naomi
Department Of Bioresources Sciences School Of Agriculture Ibaraki University
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Nakadaira Shiro
Mechanical Engineering Research Laboratory And Power & Industrial Systems Hitachi Ltd. Tsuchiura
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Yamada T
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Yagi Osami
Research Center For Water Environment Technology Graduate School Of Engineering The University Of To
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Takamura Y
Department Of Bioresources Sciences School Of Agriculture Ibaraki University
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Takamura Yoshichika
Department Of Agricultural Chemistry Faculty Of Agriculture Ibaraki University
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Tanaka Tetsuya
Mechanical Engineering Research Laboratory And Power & Industrial Systems Hitachi Ltd. Tsuchiura
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Yamada Takashi
Department Of Animal Science Graduate School Of Agricultural Science Kobe University
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