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A Simple Method for Isolation of Soybean Protoplasts and Application to Transient Gene Expression Analyses
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Published on: January 25, 2018

Elevated ozone alters soybean-virus interaction.

Damla D Bilgin1, Mihai Aldea, Bridget F O'Neill

  • 1Institute of Genomic Biolog, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

Molecular Plant-Microbe Interactions : MPMI
|September 13, 2008
PubMed
Summary
This summary is machine-generated.

Elevated tropospheric ozone (O3) exposure temporarily enhanced soybean (Glycine max) defense responses against Soybean mosaic virus (SMV). This ozone-induced resistance protected plants from viral impacts on photosynthesis and altered gene expression related to plant immunity.

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Area of Science:

  • Plant pathology
  • Environmental science
  • Molecular biology

Background:

  • Tropospheric ozone (O3) concentrations are increasing globally, impacting plant physiology and interactions.
  • Plant-pathogen interactions are crucial for ecosystem function and agriculture, and are sensitive to environmental changes.

Purpose of the Study:

  • To investigate the effect of elevated ozone (O3) on soybean (Glycine max) resistance to Soybean mosaic virus (SMV).
  • To identify the molecular mechanisms underlying ozone-induced defense responses in soybean.

Main Methods:

  • Soybean plants were exposed to elevated ozone (O3) under field conditions while being infected with Soybean mosaic virus (SMV).
  • Disease development and carbon assimilation rates were monitored.
  • High-throughput gene expression analysis was conducted to identify molecular changes in defense pathways.

Main Results:

  • Elevated O3 slowed SMV systemic infection and disease progression for three weeks by inducing non-specific resistance.
  • Ozone exposure prevented the negative impact of SMV infection on light-saturated carbon assimilation rates.
  • Gene expression analysis revealed increased transcripts of defense-related genes (PR-1, PR-5, PR-10, EDS1) and flavonoid biosynthesis pathway genes.

Conclusions:

  • Elevated ozone can induce a temporary, non-specific resistance in soybean against viral pathogens like SMV.
  • Ozone-induced defense responses involve the upregulation of key defense and flavonoid biosynthesis genes.
  • Global change, including rising ozone levels, may significantly alter plant-pathogen interactions and their coevolutionary trajectories.