Tuned in: plant roots use sound to locate water

Research output: Contribution to journalArticle

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Abstract

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 used the model plant Pisum sativum to investigate the mechanism by which roots sense and locate water. 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. When both moisture and acoustic cues were available, roots preferentially used moisture in the soil over acoustic vibrations, suggesting that acoustic gradients enable roots to broadly detect a water source at a distance, while moisture gradients help them to reach their target more accurately. Our results also showed that the presence of noise affected the abilities of roots to perceive and respond correctly to the surrounding soundscape. These findings highlight the urgent need to better understand the ecological role of sound and the consequences of acoustic pollution for plant as well as animal populations.

LanguageEnglish
Pages151-160
Number of pages10
JournalOecologia
Volume184
Issue number1
DOIs
StatePublished - 1 May 2017

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moisture
acoustics
water
vibration
soil water
pipes
Pisum sativum
sound
dehydration
pollution
pipe
soil
organisms
substrate
animals

Cite this

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title = "Tuned in: plant roots use sound to locate water",
abstract = "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 used the model plant Pisum sativum to investigate the mechanism by which roots sense and locate water. 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. When both moisture and acoustic cues were available, roots preferentially used moisture in the soil over acoustic vibrations, suggesting that acoustic gradients enable roots to broadly detect a water source at a distance, while moisture gradients help them to reach their target more accurately. Our results also showed that the presence of noise affected the abilities of roots to perceive and respond correctly to the surrounding soundscape. These findings highlight the urgent need to better understand the ecological role of sound and the consequences of acoustic pollution for plant as well as animal populations.",
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Tuned in : plant roots use sound to locate water. / Gagliano, Monica; Grimonprez, Mavra; Depczynski, Martial; Renton, Michael.

In: Oecologia, Vol. 184, No. 1, 01.05.2017, p. 151-160.

Research output: Contribution to journalArticle

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AU - Renton,Michael

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