Assessment of lux-marked Pseudomonas fluorescens for reporting on organic carbon compounds

C V Yeomans, F Porteous, E Paterson, A A Meharg, K Killham

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Abstract

Carbon-flow from plant roots to the rhizosphere provides a major source of nutrients for the soil microbial population. However, quantification of carbon-flow is problematic due to its complex composition. This study investigated the potential of lux-marked Pseudomonas fluorescens to discriminate between forms of carbon present in the rhizosphere by measuring the light response to a range of carbon compounds. Results indicate that bioluminescence of short-term carbon-starved P. fluorescens is dependent upon the source and concentration of carbon. This system, therefore, has the potential to both quantify and qualify organic acids present in rhizodeposits. (C) 1999 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)79-83
Number of pages5
JournalFEMS Microbiology Letters
Volume176
Publication statusPublished - 1999

Keywords

  • bioluminescence
  • C-flow
  • Pseudomonas fluorescens
  • rhizosphere
  • starvation
  • LOLIUM-PERENNE
  • RHIZOSPHERE
  • FLOW
  • EXUDATION
  • SYSTEMS
  • PLANTS
  • FLUXES
  • MAIZE
  • SOIL

Cite this

Yeomans, C. V., Porteous, F., Paterson, E., Meharg, A. A., & Killham, K. (1999). Assessment of lux-marked Pseudomonas fluorescens for reporting on organic carbon compounds. FEMS Microbiology Letters, 176, 79-83.