Recordings Reveal That Plants Make Ultrasonic Squeals When Stressed

Photo Credit: Christoph Schnabel/Free Images

(New Scientist) Although it has been revealed in recent years that plants are capable of seeing, hearing and smelling, they are still usually thought of as silent. But now, for the first time, they have been recorded making airborne sounds when stressed, which researchers say could open up a new field of precision agriculture where farmers listen for water-starved crops.

Itzhak Khait and his colleagues at Tel Aviv University in Israel found that tomato and tobacco plants made sounds at frequencies humans cannot hear when stressed by a lack of water or when their stem is cut.

Microphones placed 10 centimeters from the plants picked up sounds in the ultrasonic range of 20 to 100 kilohertz, which the team says insects and some mammals would be capable of hearing and responding to from as far as 5 meters away. A moth may decide against laying eggs on a plant that sounds water-stressed, the researchers suggest. Plants could even hear that other plants are short of water and react accordingly, they speculate.

“These findings can alter the way we think about the plant kingdom, which has been considered to be almost silent until now,” they write in their study, which has not yet been published in a journal.

Continue reading this story >>


Become a Christian News Network Supporter...

Dear Reader, has ChristianNews.net been of benefit and a blessing to you? For many years now, the Lord has seen fit to use this small news outlet as a strong influential resource in keeping Christians informed on current events from a Biblical worldview. With much compromise and many falsehoods in modern-day Christianity, we strive to bring you the news by keeping Christ and His word in focus. If you have benefited from our news coverage, would you please prayerfully consider becoming a Christian News supporter by clicking here to make a one-time or monthly donation to help keep the truth of God's word widely and freely published and distributed? May Christ continue to be exalted through this work!

Print Friendly, PDF & Email