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Measuring PLD activity in vivo.

Teun Munnik¹, Ana M Laxalt

¹Swammerdam Institute for Life Sciences, Section Plant Physiology, University of Amsterdam, Amsterdam, The Netherlands.

Methods in Molecular Biology (Clifton, N.J.)

|May 18, 2013

Summary

This summary is machine-generated.

This study introduces a sensitive in vivo assay for plant Phospholipase D (PLD) activity. The method uses 1-butanol to detect PLD-mediated phosphatidylbutanol (PBut) formation, aiding stress response studies.

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In Vitro Assay to Measure Phosphatidylethanolamine Methyltransferase Activity

In Vitro Assay to Measure Phosphatidylethanolamine Methyltransferase Activity

Published on: January 5, 2016

Area of Science:

Plant biochemistry
Enzymology
Molecular biology

Background:

Phospholipase D (PLD) hydrolyzes phospholipids, producing signaling molecules.
Plant PLD activity is modulated by biotic and abiotic stresses.
Existing methods for measuring PLD activity in vivo are limited.

Purpose of the Study:

To describe a novel and sensitive protocol for measuring plant Phospholipase D (PLD) activity in vivo.
To utilize the transphosphatidylation activity of PLD for detecting its enzymatic function in intact plant systems.

Main Methods:

The protocol leverages the unique ability of PLD to use primary alcohols, specifically 1-butanol, as substrates.
This transphosphatidylation reaction generates phosphatidylbutanol (PBut), a specific product indicative of PLD activity.
The assay is designed for application to intact plant cells, seedlings, and tissues.

Main Results:

The developed assay is highly sensitive for detecting PLD activity in vivo.
It allows for the measurement of PLD activity following stimulation by various biotic and abiotic stresses.
Phosphatidylbutanol (PBut) serves as a unique and specific reporter molecule for PLD activity.

Conclusions:

This protocol provides a valuable method for studying the regulation of plant PLD activity under various conditions.
The assay's sensitivity and specificity make it suitable for investigating plant stress responses.
The detection of PBut offers a direct readout of PLD enzymatic function in vivo.