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Forewarned is forearmed: rice plants develop tolerance to post-anoxia during anoxic conditions by proteomic changes
Anton E Shikov1,2, Valeriya I Shost1, Tamara V Chirkova1
1Faculty of Biology, St. Petersburg State University (SPbSU), St. Petersburg, Russia.
Frontiers in Plant Science
|October 16, 2025
Summary
Plants recovering from anoxia exhibit similar proteomic responses during re-aeration as during anoxia itself. This suggests rice plants are pre-adapted to post-anoxic stress by activating defense systems during oxygen depletion.
Area of Science:
- Plant Biology
- Stress Physiology
- Proteomics
Background:
- Plants face energy deficits and oxidative stress during anoxia and re-aeration.
- Efficient recovery requires activation of plant defense systems.
Purpose of the Study:
- To analyze the proteomic impact of anoxia and re-aeration in tolerant rice.
- To identify transcription factors involved in stress-induced gene expression.
Main Methods:
- Proteomic analysis using two-dimensional gel electrophoresis and mass spectrometry.
- Bioinformatic prediction of transcription factor binding sites.
Main Results:
- Identified 82 protein spots in rice shoots and roots.
- Re-aeration proteome resembled anoxic conditions, not control.
- Proteins involved in oxidative stress defense and pathogen resistance were upregulated during re-aeration.
- Genes encoding these proteins are regulated by stress-related transcription factors.
Conclusions:
- Plant responses to anoxia and re-aeration are similar.
- Rice shoots and roots may be pre-adapted to post-anoxic conditions during oxygen depletion.
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