A Protoplast-Based Bioassay to Quantify Strigolactone Activity in Arabidopsis Using StrigoQuant

Area of Science:

• Plant Biology
• Molecular Biology
• Biochemistry

Background:

• Strigolactones (SLs) are crucial plant hormones regulating various developmental processes.
• Understanding SL structural diversity and signaling pathways requires sensitive, quantitative tools.
• Existing methods lack the precision needed for detailed SL dynamics studies.

Purpose of the Study:

• To provide a comprehensive protocol for implementing the StrigoQuant biosensor in Arabidopsis protoplasts.
• To enable precise quantification of strigolactone activity and dynamics.
• To facilitate screening for novel SL analogs and mimics.

Main Methods:

• Generation and transformation of Arabidopsis protoplasts with the StrigoQuant biosensor.
• Application of synthetic strigolactone analogue GR24 to treated protoplasts.
• Recording and processing of luminescence signals to assess SL perception.

Main Results:

• The protocol successfully establishes StrigoQuant for use in Arabidopsis protoplasts.
• StrigoQuant allows for sensitive and quantitative measurement of SL activity across a wide concentration range.
• Data processing methods are detailed for assessing SL perception.

Conclusions:

• The developed protocol provides a robust method for studying strigolactone dynamics using StrigoQuant.
• This tool is valuable for research into SL biosynthesis, function, and signal transduction.
• The protocol supports the screening and characterization of compounds affecting SL pathways.