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Detecting cellular damages in freezing plants: are acoustic emissions useful?

Abstract : Ultrasonic acoustic emission analysis has often been used to detect hydraulic failures in xylem conducting elements under drought and/or frost stress. However, other sources can generate acoustic signals. In this study, we hypothesized that frost stress generates acoustic signals in living cells in relation to frost-induced dehydration. Living cells are able to transiently increase their frost resistance through the process of frost acclimation / deacclimation. The temperature at which freeze-induced acoustic signals would be recorded should therefore show seasonal changes. Well-hydrated lavender plants were frozen in three different seasons: winter (January and February), spring (April) and summer (June and July). The acoustic activity as a function of temperature showed seasonal changes. The temperature inducing 50% acoustic emissions was recorded at-25°C in winter and spring while it occurred at-15°C in summer. This temperature was very similar and strongly correlated to the temperature inducing 50% damages, detected by the electrolyte leakage method. Although further studies are needed to identify the exact acoustic source, these results represent a promising avenue for monitoring frost stress in a constrained environment and an alternative technique for measuring plant frost hardiness.
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Submitted on : Friday, November 5, 2021 - 4:18:28 PM
Last modification on : Tuesday, November 23, 2021 - 3:00:02 PM


2021_Charrier_Congrès IEEE.pdf
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  • HAL Id : hal-03417274, version 1



Guillaume Charrier, Florian Sabin, Thierry Ameglio, Christophe Serre, Stéphane Herbette, et al.. Detecting cellular damages in freezing plants: are acoustic emissions useful?. 2021 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR AGRICULTURE AND FORESTRY, MetroAgriFor 2021, Nov 2021, Trento - Bolzano, Italy. 496 p. ⟨hal-03417274⟩



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