There are still few scientific experiments on this subject. The scientific study is based on reactions to the sound of water and the buzzing of bees, but also on the ultrasound emitted by plants.
Some experiments on the subject :
Genetic decoding of ear-mouse cress has shown that it, like us, has genes involved in hearing or deafness. For example, the genes that condition the formation of hair cells in the inner ear. In mouse-ear cress, this gene regulates the eyelashes that are on the roots and allow them to drink and eat nutrients from the soil.
The lines of research (Gagliano and Mancuso Experiments) are about the sound of flowing water and the buzzing of bees that plants would hear. Thus, the noise of the bee leads the plant to produce a sweeter nectar to attract it (Recent interdisciplinary experience).
Haneung 2016 experience from Yeungnam University on Arabidopsis shows that sound waves can produce gene modifications.
Zweifel and Zeugin experiences from the University of Bern. Pines and oaks emit ultrasonic vibrations in the event of drought.