Polyphosphate Accumulation by Rhodobacter sphaeroides Grown under Different Environmental Conditions with Special Emphasis on the Effect of External Phoshate Concentrations
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概要
- 論文の詳細を見る
Rhodobacter sphaeroides NR3 produced significant amounts of inorganic polyphosphates (polyPs) with visible volutin granules when grown phototrophically at external orthophosphate (P_1) concentrations of 10 mM and above with 20 mM malate as the sole carbon source. The maximum level of the accumulated polyPs, amounting to 6.2% of the cell dry weight, was found with 300 mM P_1. On the other hand, the stimulatory effect of excess P_1 on polyP accumulation was not so pronounced in the cells grown under aerobic-dark conditions. The fractionation of the cellular phosphorous compounds revealed that the alkali-soluble and cold acid-soluble polyPs were the major polyPs in the high P_1-loaded phototrophic cultures. The phosphorus/carbon ratio in cell growth media was also found as an important factor affecting polyP accumulation in the bacterium. There was an antagonistic relationship between the polyP content and the RNA/DNA ratio during batch phototrophic growth. Ecophysiological implications of polyP accumulation in the phototrophic bacterium were also discussed.
- 日本微生物生態学会の論文
- 1991-05-01
著者
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KITAMURA Hiroshi
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine (A8)
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Hiraishi Akira
Tokyo Research Laboratory Konishi Co. Ltd. :(present Address)institute Of Applied Microbiology Unive
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Kitamura H
Nec Corp. Tokyo Jpn
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Kitamura H
Department Of Industrial Chemistry College Of Industrial Technology Nihon University
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YANASE AKINOBU
Department of Industrial Chemistry, College of Industrial Technology, Nihon University
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Yanase Akinobu
Department Of Industrial Chemistry College Of Industrial Technology Nihon University
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Hiraishi Akira
Tokyo Research Laboratory Konishi Co. Ltd.
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Kitamura Hiroshi
Department Of Applied Chemistry
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