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Related Experiment Video

Updated: Mar 2, 2026

Using Microtiter Dish Radiolabeling for Multiple In Vivo Measurements Of Escherichia coli pppGpp Followed by Thin Layer Chromatography
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An HPLC-based Method to Quantify Coronatine Production by Bacteria.

Shweta Panchal1, Zachary S Breitbach2, Maeli Melotto3

  • 1Centre for Genome Research, Department of Microbiology and Biotechnology Centre, the Maharaja Sayajirao University of Baroda, Baroda, India.

Bio-Protocol
|May 19, 2017
PubMed
Summary

This study details culturing methods for Pseudomonas syringae to maximize coronatine production. An HPLC method is presented to accurately quantify this key phytotoxin in bacterial cultures.

Keywords:
CoronatineHPLCPlant pathogenPseudomonas syringaeVirulence factor

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Area of Science:

  • Microbiology
  • Plant Pathology
  • Biochemistry

Background:

  • Coronatine is a critical polyketide phytotoxin produced by Pseudomonas syringae.
  • It significantly contributes to bacterial pathogenesis in plants during epiphytic and endophytic stages.
  • Understanding coronatine production is vital for managing plant diseases.

Purpose of the Study:

  • To optimize bacterial culturing for enhanced coronatine production.
  • To establish a reliable method for quantifying coronatine in culture media.
  • To provide a protocol for researchers studying Pseudomonas syringae virulence.

Main Methods:

  • Optimized bacterial culturing techniques for Pseudomonas syringae.
  • High-Performance Liquid Chromatography (HPLC) for precise coronatine quantification.
  • Analysis of coronatine secreted into the culture medium.

Main Results:

  • Successfully optimized a protocol for increased coronatine yield.
  • Validated an HPLC-based method for accurate coronatine measurement.
  • Demonstrated the utility of the protocol in studying bacterial phytotoxin production.

Conclusions:

  • The described protocol enables efficient production and quantification of coronatine.
  • This method supports further research into Pseudomonas syringae pathogenesis.
  • Optimized coronatine studies are crucial for developing novel disease control strategies.