Many people believe that playing music to plants makes them grow better, but scientists would say that’s absurd. New research from Australia might prove them wrong though. Monica Gagliano, an evolutionary biologist at the University of Western Australia, found that plants utilize the sounds of nature, from the buzzing of an insect to the sound of liquid rushing through a pipe, to find water and survive.

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In her recent study, Gagliano placed pea seedlings in a pot in the shape of an upside-down Y. Scientific American reports, “One arm of each pot was placed in either a tray of water or a coiled plastic tube through which water flowed; the other arm had only soil. The roots grew toward the arm of the pipe with the fluid, regardless of whether it was easily accessible or hidden inside the tubing.”

According to Gagliano, the plants “just knew the water was there,” even though they could only detect the sound of the water flowing inside the pipe. When the seedlings were given a choice between the flowing tube and soil that was moistened, their roots chose the latter, however. The lead scientist says the plants use sound waves to detect water from far away, but follow moisture gradients to move in on their target when it is within reach.

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Gagliano’s discovery was published in the May 2017 issue of Oecologia, an international peer-reviewed journal. In the paper, titled “Tuned in: plant roots use sound to locate water,” she writes:

Because water is essential to life, organisms have evolved a wide range of strategies to cope with water limitations, including actively searching for their preferred moisture levels to avoid dehydration. Plants use moisture gradients to direct their roots through the soil once a water source is detected, but how they first detect the source is unknown. We found that roots were able to locate a water source by sensing the vibrations generated by water moving inside pipes, even in the absence of substrate moisture.

She added, “Our results also showed that the presence of noise affected the abilities of roots to perceive and respond correctly to the surrounding soundscape.”

Considering the phenomena of “buzz pollination,” in which the sound of bees buzzing at a certain frequency stimulates the release of pollen in plants, has already been validated, it doesn’t seem too outlandish to propose that plants rely on sound vibrations to find water and thrive.

Gagliano elaborates on her findings in the video below:

Via Scientific American

Images via Pixabay