Researchers at Nagoya University and RIKEN in Japan have uncovered a copper-dependent mechanism by which plants detect hydrogen peroxide (H₂O₂), a key signaling molecule involved in stress responses and immunity.
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Copper-based sensor explains key defense signaling in stressed plants

Novel Mechanism Discovered Copper-dependent sensing
First Structural Evidence H₂O₂ perception
Japan Research institution
Plants Use Copper Not Cysteine Stress response discovery