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 language | English |
|---|---|
| Pages (from-to) | 79-83 |
| Number of pages | 5 |
| Journal | FEMS Microbiology Letters |
| Volume | 176 |
| Publication status | Published - 1999 |
Keywords
- bioluminescence
- C-flow
- Pseudomonas fluorescens
- rhizosphere
- starvation
- LOLIUM-PERENNE
- RHIZOSPHERE
- FLOW
- EXUDATION
- SYSTEMS
- PLANTS
- FLUXES
- MAIZE
- SOIL