Research shows plants know they are being eaten

riHealth Care, News, Philosophy3 Comments

healthy food for business womanVegetarians and vegans pay heed: New research shows plants know when they’re being eaten. And they don’t like it.

That plants possess an intelligence is not new knowledge, but according to Modern Farmer, a new study from the University of Missouri shows plants can sense when they are being eaten and send out defense mechanisms to try to stop it from happening.

The study was carried out on thale cress, or Arabidopsis as it’s known scientifically, which is closely related to broccoli, kale, mustard greens, and other siblings of the brassica family and is popular for science experiments. It is commonly used in experiments because it was the first plant to have its genome sequenced, and scientists are intimately familiar with how it works.

Going forward with the question of whether a plant knows it’s being eaten, the University of Missouri researchers first took a precise audio recording of the vibrations a caterpillar makes as it eats the thale cress leaves, with the working theory that plants could feel or hear the vibrations in some way.

The researchers controlled the experiment by coming up with other vibrations that simulated other natural vibrations like wind noise that the plant might encounter.

The results? According to Modern Farmer, the thale cress produces mustard oils that are mildly toxic when eaten and sends them throughout its leaves to try to keep the predators away. The research also revealed that when the plants felt or heard “munching vibrations” from the caterpillar, they sent out extra mustard oils. But the plants didn’t react when other vibrations were present.

“Previous research has investigated how plants respond to acoustic energy, including music,” said Heidi Appel, senior research scientist in the Division of Plant Sciences in the College of Agriculture, Food and Natural Resources and the Bond Life Sciences Center at MU.

“However, our work is the first example of how plants respond to an ecologically relevant vibration. We found that feeding vibrations signal changes in the plant cells’ metabolism, creating more defensive chemicals that can repel attacks from caterpillars.”
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3 Comments on “Research shows plants know they are being eaten”

  1. Lee

    I had Been in an emotional state for a while when one evening just be for sunset I checking the plants around the hjouse. I could clearly hear this crying because it was dieing and it knew it. Ther was no mistake and within a few day’s the plant was ded . It knew it was dieing by the sounds it was making made it. Clear

  2. Fred

    Plants, animals, people. We are all linked together, in ways that we do not yet fully understand. Although it is interesting to read the article, and the research that suggests that plants know when they are being eaten, it is not surprising. Just because plants do not cry out loud, and don’t have arms or hands to push a threat away, doesn’t mean that plants aren’t aware of a potential threat or that they don’t have a defensive reaction. There’s so much more that goes on in the world, in life, than that which we can see with our eyes.

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