Israel’s Plantell is helping plants signal potentially fatal stresses. It develops strains of crops that include green-fluorescent protein (GFP). These light up when the plants are stressed, showing what has caused the stress. Natural fertilizers and pesticides can then be fine-tuned to treat the crops.
https://nocamels.com/2023/09/jellyfish-protein-lets-stressed-plants-light-a-fluorescent-alarm/