When plant cells are damaged, ATP triggers defensive reactions to protect the plant
Immune system of plants is triggered by the energy molecule ATP - life short science news

Scientists have discovered that the molecule known as ATP, and normally used for energy within cells, triggers defensive reactions in plants when it appears outside the cells following damage.

ATP binds to an ATP receptor, which was already found in 2014.

Now, it turns out that extracellular ATP acts as a damage signal, which might be used in the future to give the defense of plants and crops a boost.

Read the full story: Washington State University
Scientific publication: Plant Physiology