Tomato plants have an electrical warning system


Tomatoes that are being devoured by insects can send electrical signals through the plant, prompting a defensive reaction, according to findings published in Frontiers in Sustainable Food Systems. Researchers measured the electrical signals using electrodes and found patterns by measuring before, during and after caterpillars attacked the fruit, noting that chemicals such as hydrogen peroxide were released to defend the other tomatoes as the one fruit was attacked.

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