Plant bioacoustics is a multidisciplinary field that challenges the conventional wisdom that plants are static, unresponsive organisms by examining how they perceive, generate, and react to acoustic cues in their surroundings. There is mounting evidence that sound waves, especially those in the low-frequency (20 Hz–2 kHz) and ultrasonic (>20 kHz) ranges, can have a major impact on a number of physiological processes. Acoustic stimulation can boost biomass accumulation, delay fruit ripening, promote germination, speed up vegetative development, and increase resistance to biotic stressors (like infections and pests) and abiotic stressors (like drought), according to experimental studies. Measureable changes in hormone signaling pathways, gene expression, and oxidative stress indicators like reactive oxygen species (ROS) all support these reactions. One especially interesting feature is that plants under stress often emit ultrasonic noises, which are linked to xylem cavitation. These sounds can be used as early stress indicators and to help remotely monitor crops. Additionally, it has been discovered that plants react to mechanical vibrations from environmental stimuli like pollinators, herbivory, and water flow, suggesting that sound plays a part in interactions between plants and insects. Plants can translate physical vibrations into biochemical signals that affect defense and growth thanks to mechanosensory perception, which is controlled by transcriptional processes and mechanosensitive ion channels. Sonication-assisted Agrobacterium-mediated transformation (SAAT) and ultrasound-assisted tissue culture are two sound-based biotechnologies that have demonstrated potential in improving regeneration and transformation efficiency in resistant crops. There is significant promise for creating high-yielding, stress-resistant cultivars using these non-invasive, environmentally benign techniques. Thus, through sound-based precision farming, early stress detection, and non-chemical crop promotion, plant bioacoustics creates new opportunities for sustainable agriculture. Current research confirms sound as a potent and ecologically significant signal in plant life, even though the molecular basis of these responses is still being investigated.
Pujar et al. (Mon,) studied this question.