Copper as a controlling factor of anaerobic growth under N_2O and biosynthesis of N_2O reductase in denitrifying bacteria

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概要

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• In order to determine the specific mineral requirement for N_2O-anaerobic growth of the denitrifying bacteria Alcaligenes sp. NCIB 11015 and Alcaligenes faecalis IAM 1015, investigations were done using dithizone-treated KNO_3-free modified Giltay's medium (dithizone-treated medium). 1. When grown aerobically, the bacteria exhibited equally good growth in the presence or absence of an appropriate amount of copper. 2. Anaerobic growth under N_2O was stimulated by the addition of a proper amount of copper in both denitrifying bacteria. Growth in the medium demetalated by various treatments showed that copper was specifically necessary for the maximum growth under N_2O. 3. The optimum concentration of copper was between 0.5 to 1 μM and 20 to 40 μM for the anaerobic growth rate under N_2O. 4. Copper was indispensable for the biosynthesis of N_2O reductase and is very likely to be a functional part of N_2O reductase in denitrifying bacteria.

• 日本植物生理学会の論文

著者

• Saigo Takashi

  Faculty Of Science College Of General Education Nagoya University

• Iwasaki Hidekazu

  Department Of Biology College Of General Education Nagoya University

• Matsubara Teruo

  Biological Laboratory, College of General Education, Nagoya University

• Matsubara Teruo

  Biological Laboratory College Of General Education Nagoya University

関連論文

• Cytochrome c' Isolated from Achromobacter xylosoxidans GIFU 1055
• Copper as a controlling factor of anaerobic growth under N_2O and biosynthesis of N_2O reductase in denitrifying bacteria
• Activation of Nitrite Reductase in a Cell-Free System from the Denitrifier Alcaligenes sp. by Freeze-Thawing
• Chloride- or Bromide-Dependent Activation of Nitrite Reductase by Freeze-Thawing in a Cell-Free System of a Denitrifier, Alcaligenes sp.

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