- Flowering plants and trees hear when eaten and become defensive to the stimuli is found out in a study
- The plants were made to hear vibrations of a feeding caterpillar and other was just sounds with same acoustics
- The plants listening to caterpillar vibrations showed production of mustard oil which made the caterpillar crawl away
June 23, 2017: Plants and animals can be a source of energy for us but when it comes to defense, plants are not behind. In some cultures and communities, people have started choosing a vegan lifestyle as they are against animal slaughter. The viral videos on how animals are treated in slaughterhouses make people take up the vegan lifestyle. Most people think that plants do not have a conscience but research show otherwise.
Research show that plants do react to external stimuli and some research shows that they also communicate through chemical signals. They grow towards light, compete with other plants for water and nutrients and also signal for help when needed.
In recent news about science, a research published in Oecologia which was conducted in University of Missouri suggests that plants can hear when they are being attacked and can also become defensive from the attack. Heidi Appel (senior research scientist in the Division of Plant Sciences) and Rex Crocoft (professor in the Division of Biological Sciences) carried out the research by conducting experiments in which they placed caterpillars on the flowering plants of cabbage and mustard.
They put up a piece of reflective material and a laser on a leaf to measure its movement as a response from vibrations of feeding caterpillar and then they recorded the sounds of caterpillar feeding and played them to similar plants and on the other hand, they played sounds with similar acoustics but a different source to other plants.
The results showed that when caterpillars fed on both plants, the plant exposed to vibrations of caterpillars produced more mustard oils as it is unpleasant to caterpillars so they crawled away and those who were played sounds with similar acoustics showed no change in chemical response.
Appel and Crocoft said that more future researches would be upon how the vibrations are sensed by the plants and how plants would react to other vibrations to keep the pests away. Crocoft stated, ‘Plants have many ways to detect insect attack, but feeding vibrations are likely the fastest way for distant parts of the plant to perceive the attack and begin to increase their defenses.’
Appel said,’ ‘This research also opens the window of plant behavior a little wider, showing that plants have many of the same responses to outside influences that animals do, even though the responses look different.’
This research was part funded by National Science Foundation and it could prove to be a useful tool in agriculture!
– by Sumit Balodi of NewsGram. Twitter: @sumit_balodi