Effect of stress on the ability of a phlA-based quantitative competitive PCR assay to monitor biocontrol strain Pseudomonas fluorescens CHA0

Appl Environ Microbiol. 2003 Jan;69(1):686-90. doi: 10.1128/AEM.69.1.686-690.2003.

Abstract

A quantitative competitive PCR (QC-PCR) assay targeting the phlA gene of Pseudomonas fluorescens CHA0 was developed and tested in vitro. Statistically significant, positive correlations were found between QC-PCR and both CFU and total cell number when studying cells in log or stationary phase. The correlations disappeared when considering stressed cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Proteins / genetics*
  • Bacterial Proteins / metabolism
  • Colony Count, Microbial
  • Culture Media
  • DNA, Bacterial / analysis
  • Heat-Shock Response*
  • Pest Control, Biological
  • Phloroglucinol / analogs & derivatives
  • Phloroglucinol / metabolism*
  • Polymerase Chain Reaction / methods*
  • Pseudomonas fluorescens / genetics
  • Pseudomonas fluorescens / growth & development
  • Pseudomonas fluorescens / metabolism
  • Pseudomonas fluorescens / physiology*

Substances

  • Bacterial Proteins
  • Culture Media
  • DNA, Bacterial
  • Phloroglucinol