Dynamic leaf energy balance: deriving stomatal conductance from thermal imaging in a dynamic environment

Journal of Experimental Botany
Silvere Vialet-Chabrand, Tracy Lawson

Abstract

In spite of the significant progress made in recent years, the use of thermography to derive biologically relevant traits remains a challenge under fluctuating conditions. The aim of this study was to rethink the current method to process thermograms and derive temporal responses of stomatal conductance (gsw) using dynamic energy balance equations. Time-series thermograms provided the basis for a spatial and temporal characterization of gsw responses in wheat (Triticum aestivum). A leaf replica with a known conductance was used to validate the approach and to test the ability of our model to be used with any material and under any environmental conditions. The results highlighted the importance of the co-ordinated stomatal responses that run parallel to the leaf blade despite their patchy distribution. The diversity and asymmetry of the temporal response of gsw observed after a step increase and step decrease in light intensity can be interpreted as a strategy to maximize photosynthesis per unit of water loss and avoid heat stress in response to light flecks in a natural environment. This study removes a major bottleneck for plant phenotyping platforms and will pave the way to further developments in our understanding of stomat...Continue Reading

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Citations

Oct 19, 2019·The Plant Journal : for Cell and Molecular Biology·Michele Faralli, Tracy Lawson
Oct 16, 2019·Journal of Experimental Botany·Justyna Jadwiga OlasFederico Apelt
Jan 9, 2020·Journal of Experimental Botany·Anthony G Condon
Dec 25, 2019·Journal of Experimental Botany·Jack S A MatthewsTracy Lawson
Jan 9, 2020·Journal of Experimental Botany·Silvere Vialet-Chabrand, Tracy Lawson
Oct 1, 2020·Scientific Reports·Shafquat YasmeenImtiaz Ahmed Khan
Dec 10, 2020·Plant, Cell & Environment·Hanna HõrakJulie E Gray
Feb 16, 2021·Frontiers in Plant Science·Angelica GalieniMichele Pisante
Oct 14, 2020·Biochemical and Biophysical Research Communications·Aleksandra OrzechowskaPiotr Rozpądek
Jun 16, 2019·Current Opinion in Plant Biology·Yu TanakaWataru Yamori
May 1, 2021·Plants·Onofrio Davide PalmitessaEp Heuvelink
May 1, 2021·International Journal of Molecular Sciences·Aleksandra OrzechowskaKatarzyna Wątor
Jul 13, 2021·Plant Phenomics : a Science Partner Journal·Zhuangzhuang SunDong Jiang
Jun 5, 2021·The Plant Journal : for Cell and Molecular Biology·Yu WangStephen P Long

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Methods Mentioned

BETA
imaging techniques
infrared thermometry

Software Mentioned

cvode
Stan
Boost

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