9. Poplar Trees
Poplar trees have developed an effective early warning system against insect attacks.
When under threat, poplars emit methyl jasmonate, a volatile compound that quickly drifts to neighboring trees.
This signal triggers nearby poplars to boost their own chemical defenses, making widespread infestations less likely.
Such rapid, airborne communication helps protect entire stands of poplars, ensuring the group can better withstand pest outbreaks.
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