Real-Time Observations of Leaf Vitality Extinction by Dynamic Speckle Imaging
Year: 2024
Type: article
Abstract: Sap flow within a leaf is a critical indicator of plant vitality and health. This paper introduces an easy-to-use, non-invasive and real-time imaging method for sap microcirculation imaging. From the coherent backscattering of light on a leaf, we show that the acquisition frequency of dynamic speckle can be linked to the microcirculation speed inside the leaf. Thus, by accessing different ranges of sap flow velocities, we reveal in a non invasive way, the anatomy of the leaf's circulatory network with unprecedented richness. We experimentally validate the ability of the method to characterize in real time the vitality of a fig leaf by observing the continuous decrease of sap circulation, first in the smaller vessels and then in the larger ones, following the cutting of the leaf over a 48-hour period.
Source: Photonics
Institutions: Office National d'Études et de Recherches Aérospatiales, Département Traitement de l’Information et Systèmes, Centre National de la Recherche Scientifique, École Polytechnique, Laboratoire de Physique des Interfaces et des Couches Minces, Institut Polytechnique de Paris, Université de Toulouse, Département Optique et Techniques Associées
Language: English
Subfield: Acoustics and Ultrasonics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,728
Funder: Agence Nationale de la Recherche
OpenAlex ID: W4404501544