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Preparation of Arabidopsis tissue sections of fixed material.

CSH protocols·2011

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The PAS Reaction for Staining Cell Walls.

|March 2, 2011

Summary

This summary is machine-generated.

The periodic acid Schiff (PAS) reaction is not ideal for staining Arabidopsis gynoecium transmitting tract cell walls. Alcian Blue is a better stain for these specific acid proteoglycans and glycoproteins.

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Area of Science:

Plant biology
Cell biology
Histology

Background:

The periodic acid Schiff (PAS) reaction stains insoluble polysaccharides like starch and cellulose magenta.
Counterstains such as toluidine blue O or fast green are used with PAS for improved contrast.
Arabidopsis gynoecium transmitting tract cells contain acid proteoglycans and glycoproteins.

Purpose of the Study:

To evaluate the suitability of the PAS reaction for staining Arabidopsis gynoecium transmitting tract cell walls.
To identify an appropriate staining method for the specific cell wall components in these tissues.

Main Methods:

Histochemical staining techniques were compared.
The study focused on the application of the PAS reaction and Alcian Blue staining.

Main Results:

The PAS reaction is not optimal for visualizing the cell walls of transmitting tract cells in the Arabidopsis gynoecium.
Alcian Blue effectively stains the acid proteoglycans and glycoproteins in these cell walls a dark blue.
Alcian Blue can be used alone or as a counterstain with PAS.

Conclusions:

Alcian Blue is the recommended stain for the cell walls of transmitting tract cells in the Arabidopsis gynoecium.
This method provides better contrast and specificity for acid proteoglycans and glycoproteins compared to PAS.