I have always been fascinated by the idea that plants communicate with each other. I poked around looking at current research on the topic and find it amazing!
Plants send chemical signals through the air when attacked by insects. Other plants detect this signal and change the chemical makeup of their leaves to ward off the predators.
"It turns out almost every green plant that’s been studied releases its own cocktail of volatile chemicals, and many species register and respond to these plumes."
Plants also communicate through chemicals released through their roots.
“The finding that plants communicate stress cues via roots was itself novel,” says Novoplansky. “But for me another aspect was more interesting and important: that unstressed neighbors not only responded as if exposed to drought themselves, but also released more of the same cue, which was in turn perceived by further, more remote, unstressed plants.”
And the most amazing of all, there is evidence of a vast fungal network connecting plants at vast distances.
"...researchers are starting to explore another underground plant communication system, one in which messages are sent through the labyrinth of hairlike fungal filaments that festoon the roots of the vast majority of plants on the planet—including important crops such as wheat, rice, maize, and barley."
I love when scientific research begins to reinforce age-old ideas. Everything is indeed connected.
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