Quality Parameter Levels of Strawberry Fruit in Response to Different Sound Waves at 1000 Hz with Different dB Values (95, 100, 105 dB)

Abstract

All living organisms perceive mechanical signals, regardless of their taxonomic classifications or life habits. Because of their immobility, plants are influenced by a variety of environmental stresses, such as mechanical stress, during their growth and development. Plants develop physiological behaviors to adapt to their environment for long-term development and evolution. Sound-induced stress—an abiotic stress factor—is an example of mechanical stress and is caused by sound waves generated by different sources. This stress has a negative effect on the development and growth of plants. The strawberry plants evaluated in this study were exposed to three different sound intensity levels (95, 100, 105 dB) at a constant frequency of 1000 Hz. In strawberry plants, stress induced by sound waves is thought to trigger increased production of secondary metabolites as a defense mechanism. To determine the effect of sound applications, the fresh and dry weights of the roots and shoots were measured in strawberry plants, and the pH, total soluble solids (Brix), titratable acidity, vitamin C, total sugar, total acid, and total phenols were analyzed in the fruits. Results show that the sound stress, which was produced at a constant frequency (1000 Hz) and different sound levels (95, 100, 105 dB), affects the growth parameters of the plant and several quality parameters of the fruit.

Sound waves alter the viability of tobacco cells via changes in cytosolic calcium, membrane integrity, and cell wall composition

“…An increase of peroxidase isoenzymes has been reported in chrysanthemum seedlings after treatment with 100 dB, 1,000 Hz SW [ 68 ]. Decreases in the weight of roots and the green parts of strawberry has been observed after exposure of the plants to SW of 100 and 105 dB at a constant frequency of 1,000 Hz [ 15 ].…”

“…thaliana in response to the vibrations produced by insect herbivores while chewing on leaves [ 14 ]. Stimulation of strawberry fruits with sounds at 1,000 Hz and 100 dB increased several fruit quality parameters and enhanced defensive metabolites [ 15 ]. Also, exposure of Chrysanthemum calli to the sound of 1,000 Hz and 100 dB increased the activity of plasma membrane H + -ATPase via Ca 2+ -dependent phosphorylation [ 16 , 17 ].…”

The role of sound stimulation in production of plant secondary metabolites

“…In 2018, Ozkurt et al from Turkey treated strawberry plants at 1000 Hz with varies intensity levels (95, 100, and 105 dB). A wide range of growth parameters were measured for fresh and dry weights of the roots and above-ground parts of the strawberry plants, including concentrations of vitamin C, total sugar, total acid and total phenol contents [ 17 ], which indicated that the sound wave at 1000 Hz influenced plant growth and fruit quality.…”

“…[ 9 ]. Among these changes, production of plant secondary metabolites has caught increasing attention lately [ 7 , 10 – 17 ].…”

Ultrasonik ve Ultrasonik Sınır Altındaki Farklı Ses Frekanslarının Culex pipiens (L.)’in (Diptera: Culicidae) Larvaları Üzerine Etkilerinin Değerlendirilmesi

“…Sound pressure is one of the most important sound magnitudes. Sound pressure is the changes of air pressure over a certain period of time during sound propagation (Ozkurt and Altuntas, 2018).…”