Monica Perri

This study shows that reducing activity in Arabidopsis thaliana PCO4 improves flood resilience by stabilizing ERFVIIs, enhancing survival under submergence.

This study replaces Arabidopsis PCOs with NCOs from different species to show how enzyme activity affects hypoxia gene expression and submergence survival, but also impacts growth and biomass.

Hypoxic induction of glycolysis and fermentation genes spans the land plant divisions tested, while oxygen-regulated group VII Ethylene Response Factors (ERFVIIs) carrying Cys2 occur only in vascular plants.

The paper uses hypoxia-activated fluorescent probes to measure oxygen levels in plant cells and tissues, showing their effectiveness in detecting hypoxia in Arabidopsis thaliana.

The paper shows that H2O2 stabilizes ERFVII transcription factors in reoxygenation, leading to repression of hypoxia markers and activation of oxidative stress genes.