Hello the right sounds can produce tremendous improvements in growth, and the wrong sounds can do just the opposite. Plants are more aware of their surroundings than we think, probably much more so than us!

Dear Dr. Jean-Pierre Jost ,

It has been long established that plants respond to mechanical perturbations by suitably modulating their growth and development, but sound vibrations (SVs) as a stimulus have been considered only recently.

No breakthrough has occured since.

I remember a suggestion that plants might have otolith-like structures, but I cannot find articles about it.

At cellular level, SVs can affect the secondary structure of plasma membrane proteins, induce microfilaments rearrangements, trigger Ca2+ signatures, increase synthesis of protein kinases, peroxidases, amylase, polyamines and auxin and enhance H+-ATPase / K+ channel activities.

I have also read suggestion of recording sounds for monitoring the plants health and producing them to improve it, but, as far as I know, nothing concrete has been tried.

Article Expression Analysis of Sound Vibration-Regulated Genes by To...

Article Drought tolerance induced by sound in Arabidopsis plants

Article To respond or not to respond, the recurring question in plan...

Article Plant acoustics: In the search of a sound mechanism for soun...

Sure by biological mecanism using some channel activities as mentionned by Dr. Nicolà.

Moreover you can read this article

https://academic.oup.com/beheco/article-abstract/24/4/789/218916

Interesting, I have not noticed it untill now that music can affect plant growth. I only heard that music can have positive effect on milk production if the cow listen to music.

From the abstract listed below, it seems that sound can increase plant yields and improve their immune system. I wonder whether those crops in the plant fields near an airport have a changed yield? :)

Article Advances in Effects of Sound Waves on Plants

Abstract Sound waves technology has been applied to different plants. It has been found that sound waves were at different frequencies, sound pressure levels (SPLs), exposure periods, and distances from the source of sound influence plant growth. Experiments have been conducted in the open field and under greenhouse growing conditions with different levels of audible sound frequencies and sound pressure levels. Sound waves at 1 kHz and 100 dB for 1 h within a distance of 0.20 m could significantly promote the division and cell wall fluidity of callus cells and also significantly enhance the activity of protective enzymes and endogenous hormones. Sound waves stimulation could increase the plant plasma-membrane H+-ATPase activity, the contents of soluble sugar, soluble protein, and amylase activity of callus. Moreover, sound waves could increase the content of RNA and the level of transcription. Stress-induced genes could switch on under sound stimulation. Sound waves at 0.1–1 kHz and SPL of (70±5) dB for 3 h from plant acoustic frequency technology (PAFT) generator within a distance ranged from 30 to 60 m every other day significantly increased the yield of sweet pepper, cucumber and tomato by 30.05, 37.1 and 13.2%, respectively. Furthermore, the yield of lettuce, spinach, cotton, rice, and wheat were increased by 19.6, 22.7, 11.4, 5.7, and 17.0%, respectively. Sound waves may also strengthen plant immune systems. It has been proved that spider mite, aphids, gray mold, late blight and virus disease of tomatoes in the greenhouses decreased by 6.0, 8.0, 9.0, 11.0, and 8.0%, respectively, and the sheath blight of rice was reduced by 50%. This paper provides an overview of literature for the effects of sound waves on various growth parameters of plant at different growth stages.

Hello the right sounds can produce tremendous improvements in growth, and the wrong sounds can do just the opposite. Plants are more aware of their surroundings than we think, probably much more so than us!