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Updated: Feb 5, 2026

Visualizing Early Infection Sites of Rice Blast Disease Magnaporthe oryzae on Barley Hordeum vulgare Using a Basic Microscope and a Smartphone
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Visualizing Early Infection Sites of Rice Blast Disease Magnaporthe oryzae on Barley Hordeum vulgare Using a Basic Microscope and a Smartphone

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Visualizing the Movement of Magnaporthe oryzae Effector Proteins in Rice Cells During Infection

Kiersun Jones1, Chang Hyun Khang2

  • 1Department of Plant Biology, University of Georgia, Athens, GA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|September 6, 2018
PubMed

Insights

Researchers developed new assays to visualize how the rice blast fungus delivers effector proteins into rice cells. These methods track fungal effector movement during plant infection.

Area of Science:

  • Plant Pathology
  • Molecular Biology
  • Mycology

Background:

  • Filamentous fungal pathogens like Magnaporthe oryzae require effector proteins to colonize host plants.
  • Understanding effector translocation is crucial for developing disease resistance in crops.

Purpose of the Study:

  • To develop and validate novel assays for visualizing effector protein translocation and movement.
  • To analyze the dynamics of effector movement during Magnaporthe oryzae infection of rice.

Main Methods:

  • Utilized live-cell confocal imaging of optically clear rice sheath cells.
  • Employed transgenic strains of M. oryzae expressing fluorescent protein-tagged effector PWL2.
  • Developed three complementary assays to visualize effector translocation and cell-to-cell movement.

Main Results:

  • Successfully visualized the translocation of the PWL2 effector into rice cytoplasm.
  • Tracked the cell-to-cell movement of effectors during fungal infection.
  • Identified key considerations for analyzing effector dynamics in planta.

Conclusions:

  • The developed assays provide powerful tools for studying fungal effector biology.
  • These methods advance our understanding of host-pathogen interactions in rice blast disease.
  • Insights gained can inform strategies for enhancing rice disease resistance.
Keywords:
Biotrophic interfacial complexConfocal imagingEffector proteinsFluorescent proteinsHost translocation assayLive-cell imagingMagnaporthe oryzaeOryza sativaPlant–pathogen interactionsRice blast

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