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Methods to Quantify Biotic-Induced Stress in Plants.

Marcel Bach-Pages¹, Gail M Preston²

¹Department of Plant Sciences, University of Oxford, Oxford, UK.

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

|December 31, 2017

Summary

This summary is machine-generated.

This chapter details methods for monitoring plant stress caused by pathogens. Key techniques include measuring reactive oxygen species (ROS), callose deposition, cell death, and membrane integrity loss.

Keywords:

Aniline blue Biotic stress Callose deposition Cell death DAB Electrolyte leakage Luminol NBT Nicotiana benthamiana Plant pathogen Pseudomonas syringae ROS Trypan blue

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Area of Science:

Plant Pathology
Molecular Biology
Biochemistry

Background:

Plant pathogens cause significant global economic losses in agriculture.
Understanding plant-pathogen interactions at cellular and molecular levels is crucial.
Biotic stresses from pathogens impact plants, pathogens, or both.

Purpose of the Study:

To outline common techniques for monitoring biotic stress in plants.
To detail methods for quantifying key stress indicators.

Main Methods:

Quantification of hydrogen peroxide (H₂O₂) using 3,3'-diaminobenzidine (DAB) staining and luminol assays.
Measurement of superoxide (O₂⁻) via nitroblue tetrazolium (NBT) staining.
Assessment of callose deposition (aniline blue), cell death (trypan blue), and membrane integrity loss (electrolyte leakage).

Main Results:

Reactive oxygen species (ROS) generation, including H₂O₂ and O₂⁻, is a common feature of biotic stress.
Various staining and leakage assays can effectively monitor plant stress responses.

Conclusions:

A range of techniques are available for studying plant responses to biotic stress.
These methods provide insights into cellular and molecular mechanisms of plant-pathogen interactions.