Distribution of bacteriochlorophyll a among aerobic and acidophilic bacteria and light-enhanced CO2-incorporation in Acidiphilium rubrum

Noriaki Kishimoto, Fumihito Fukaya, Kenji Inagaki, Tsuyoshi Sugio, Hidehiko Tanaka, Tatsuo Tano

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26 Citations (Scopus)

Abstract

Four Acidiphilium species among aerobic and acidophilic bacteria, Acidiphilium angustum, Acidiphilium cryptum, Acidiphilium organovorum, and Acidiphilium rubrum, produced the bacteriochlorophyll a (0.005 ~ 0.76 nmol mg-1 dried cells), whereas Acidiphilium aminolytica, Acidiphilium facilis, Acidomonas methanolica, Acidobacterium capsulatum. Thiobacillus acidophilus, Thiobacillus ferrooxidans, and Thiohacillus thiooxidans produced no phototrophic pigments. Bacteriochlorophyll a was purified from A. rubrum to a single spot on a thin-layer chromatogram and identified by its absorption spectrum. Light enhanced 14CO2-incorporation in A. rubrum only under aerobic conditions. However, the rates of incorporation were very low compared with anaerobic phototrophic bacteria and A. rubrum could not grow either aerobically or anaerobically in light in the absence of an organic energy source. These results indicate that four Acidiphilium species produced bacteriochlorophyll a should be classified into quasi-photosynthetic bacteria.

Original languageEnglish
Pages (from-to)291-296
Number of pages6
JournalFEMS Microbiology Ecology
Volume16
Issue number4
DOIs
Publication statusPublished - 1995

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Keywords

  • Acidiphilium
  • Acidophilic bacteria
  • Bacteriochlorophyll
  • Quasi-photosynthetic bacteria

ASJC Scopus subject areas

  • Ecology
  • Applied Microbiology and Biotechnology
  • Microbiology

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