ADAPTIVE FORMATION OF NITRATE REDUCING SYSTEM IN ANABAENA CYLINDRICA

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概要

• 論文の詳細を見る

• 1. Changes in capacities for reducing nitrate, nitrite and hydroxylamine caused by provision or depletion of various nitrogen sources were investigated with a nitrogen fixing blue-green alga, Anabaena cylindrica, and adaptive nature of these reducing system was demonstrated. 2. It was found that, under light-aerobic conditions, nitrate- and nitrite-reducing systems were induced by nitrate or nitrite but not by N_2, ammonia and glutamate. On the other hand, the activity of enzymes pertaining to hydroxylamine reduction was stimulated equally by nitrate, nitrite and N_2. The latter activity was suppressed markedly in the presence of ammonia or glutamate. 3. Adaptive formation of nitrite reducing system is completely inhibited by chloramphenicol, a potent inhibitor of protein synthesis. No formation was also observed under the anaerobic condition or in the dark. 4. On the basis of these findings, a tentative scheme for pathways of nitrate reduction and nitrogen fixation in Anabaena cylindrica was proposed.

• 日本植物生理学会の論文

著者

• Hattori Akihiko

  Institule Of Applied Microbiology University Of Tokyo

• Hattori A.

  Institule of Applied Microbiology, University of Tokyo

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