Polyphoshate accumulation by Rhodobacter sphaeroides grown under different environmental conditions with special emphasis on the effect of external phosphate concentrations

DOI Web Site 被引用文献3件 オープンアクセス
  • HIRAISHI AKIRA
    Tokyo Research Laboratory, Konishi Co., Ltd.
  • YANASE AKINOBU
    Department of Industrial Chemistry, College of Industrial Technology, Nihon University
  • KITAMURA HIROSHI
    Department of Industrial Chemistry, College of Industrial Technology, Nihon University

書誌事項

タイトル別名
  • Polyphosphate accumulation by Rhodobacter sphaeroides grown under different environmental conditions with special emphasis on the effect of external phosphate concentrations.
  • Phosphate accumulation by Rhodobacter sphaeroides grown under different environmental conditions with special emphasis on the effect of external phosphate concentrations

この論文をさがす

説明

Rhodobacter sphaeroides NR3 produced significant amounts of inorganic polyphosphates (polyPs) with visible volutin granules when grown phototrophically at external orthophosphate (Pi) 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 Pi. On the other hand, the stimulatory effect of excess Pi 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 Pi-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.

収録刊行物

被引用文献 (3)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ