O2-stimulated synthesis of bacteriochlorophyll and carotenoids in marine bacteria |
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| Authors: | Harashima Keiji; Hayasaki Jun-ichi; Ikari Takaomi; Shiba Tsuneo |
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| Institution: | 1Department of Agricultural Chemistry, The University of Tokyo Bunkyo-ku, Tokyo 113
2Otsuchi Marine Research Center, Ocean Research Institute, The University of Tokyo Akahama, Otsuchi, Iwate 028-11, Japan |
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| Abstract: | We examined the effects of a limitation of the O2-supply onthe syntheses of bacteriochlorophyll ap and carotenoids in isolatesof aerobic marine bacteria, OCh 101 and OCh 114, grown heterotrophically.Whereas they formed these pigments fairly well under high aerationin the dark, a limitation of the O2-supply resulted in the decreasedsyntheses of bacteriochlorophyll in both strains. Synthesesof carotenoids also were depressed under low aeration but toa lesser extent (especially in OCh 101) than the depressionof bacteriochlorophyll synthesis. Aerobic incubation of a cultureof OCh 101, that previously had been grown semiaerobically,induced the supplementary synthesis of bacteriochlorophyll.This induction was inhibited almost completely by chloram-phenicol.The absorption spectra of suspensions and solvent extracts ofcells grown aerobically or semiaerobically are reported. (Received May 30, 1980; ) |
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