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Related Experiment Video

Updated: May 18, 2026

Combining Clearing and Fluorescence Microscopy for Visualising Changes in Gene Expression and Physiological Responses to Plasmodiophora brassicae
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Combining Clearing and Fluorescence Microscopy for Visualising Changes in Gene Expression and Physiological Responses to Plasmodiophora brassicae

Published on: August 5, 2022

DAPI staining and fluorescence microscopy techniques for phytoplasmas.

Nancy M Andrade1, Nolberto L Arismendi

  • 1Institute of Production and Plant Protection, Universidad Austral de Chile, Valdivia, Chile. nandrade@uach.cl

Methods in Molecular Biology (Clifton, N.J.)
|September 19, 2012
PubMed
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The 4

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Published on: May 17, 2022

Area of Science:

  • Plant Pathology
  • Microbiology

Background:

  • Phytoplasmas are plant pathogens causing significant agricultural losses.
  • Accurate detection of phytoplasmas is crucial for disease management.

Purpose of the Study:

  • To introduce and validate the 4',6-diamidino-2-phenylindole (DAPI) staining technique for phytoplasma detection.
  • To assess the efficiency and applicability of DAPI staining in infected plant tissues.

Main Methods:

  • Utilized DAPI staining on hand-cut or freezing microtome sections of infected plant tissues.
  • Employed fluorescence microscopy to visualize DAPI-stained phytoplasmas.
  • Focused on DAPI's preferential binding to AT-rich DNA in phytoplasmas.

Main Results:

  • DAPI staining successfully confirmed the presence of phytoplasmas in infected tissues.
  • Phytoplasmas were visualized among phloem cells using fluorescence microscopy.
  • The method proved to be quick, easy, and inexpensive.

Conclusions:

  • The DAPI stain technique is a reliable and cost-effective method for preliminary or quantitative detection of phytoplasmas.
  • This technique facilitates the visualization of phytoplasma-like organisms in infected plants.