Effect of Coordination Structure of Werner-type Metal Complexes on Bioluminescence Intensity of Marine Luminescent Bacterium <i>Vibrio fischeri</i>

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  • SEKINE Hideaki
    Graduate School of Science, Tokai University
  • IKEDA Shiro
    Graduate School of Earth and Environmental Sciences, Tokai University
  • SEKINE Yoshika
    Graduate School of Science, Tokai University Graduate School of Earth and Environmental Sciences, Tokai University

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  • 海洋性発光バクテリア<i>Vibrio fischeri</i>の生物発光強度に及ぼすWerner型金属錯体の配位構造の影響
  • 海洋性発光バクテリアVibrio fischeriの生物発光強度に及ぼすWerner型金属錯体の配位構造の影響
  • カイヨウセイ ハッコウ バクテリア Vibrio fischeri ノ セイブツ ハッコウ キョウド ニ オヨボス Wernerガタ キンゾク サクタイ ノ ハイイ コウゾウ ノ エイキョウ

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Abstract

<p>This study aimed to investigate the effect of coordination structure of Werner-type metal complexes on the bioluminescence intensity of marine luminescent bacterium Vibrio fischeri. Octahedral complexes of Co2+, Zn2+ and Cu2+ were prepared by mixing with varied concentrations of aqueous ethylenediamine or glycine as a ligand and the bioluminescence intensity of Vibrio fischeri was measured using ROTASTM-leachable kit. Toxicity of metal ion was apparently decreased by formation of complexes with ethylenediamine and the effect depended on the kind of metal ion and coordination structure. Meanwhile, although the toxicity was also reduced by the formation of glycine complexes, no clear dependency was found on the coordination structure, probably because of bioavailability of glycine for Vibrio fischeri via Na+-symport system in cell membrane.</p>

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