When a cuvette is not a canopy: A caution about measuring leaf temperature during gas exchange measurements

C. J. Still; A. Sibley; G. Page; F. C. Meinzer; S. Sevanto

doi:10.1016/j.agrformet.2019.107737

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When a cuvette is not a canopy: A caution about measuring leaf temperature during gas exchange measurements

Journal article

Open access

Peer reviewed

When a cuvette is not a canopy: A caution about measuring leaf temperature during gas exchange measurements

C. J. Still, A. Sibley, G. Page, F. C. Meinzer and S. Sevanto

Agricultural and forest meteorology, Vol.279, Art. 107737

2019

DOI: https://doi.org/10.1016/j.agrformet.2019.107737

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https://www.sciencedirect.com/science/article/am/pii/S0168192319303533View

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Abstract

Agriculture

Agronomy

Forestry

Life Sciences & Biomedicine

Meteorology & Atmospheric Sciences

Physical Sciences

Science & Technology

Plant gas exchange systems are widely used to study leaf physiological processes and properties such as stomatal function and the maximum carboxylation rate of Rubisco. Increasingly, these systems are used to assess how leaf gas exchange varies with temperature in order to better understand how rising temperature will impact plant function. Examples of such studies include variation in optimal temperatures of photosynthesis as a function of species and growth environment, and respiratory acclimation to higher temperatures. Leaf thermoregulation leading to homeothermy has been reported based on leaf gas exchange measurements spanning a large (similar to 25 degrees C) temperature range. However, as we show here, the design of a popular gas exchange system used for temperature-response measurements can lead to biased measurements of leaf temperature. We demonstrate this with an example showing that apparent leaf thermoregulatory behavior can arise even in empty cuvettes. More broadly, our results have implications for other temperature manipulations in similar gas exchange systems.

Details

Title: When a cuvette is not a canopy: A caution about measuring leaf temperature during gas exchange measurements
Authors/Creators: C. J. Still - Oregon State University
A. Sibley - Oregon State University
G. Page - Murdoch University, College of Environmental and Life Sciences
F. C. Meinzer - US Forest Service
S. Sevanto - Los Alamos National Laboratory
Publication Details: Agricultural and forest meteorology, Vol.279, Art. 107737
Publisher: Elsevier
Number of pages: 5
Grant note: College of Forestry, Oregon State University Los Alamos National Laboratory, Department of Energy
Identifiers: 991005550568307891
Murdoch Affiliation: College of Environmental and Life Sciences; School of Environmental and Conservation Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.40 Forestry; 3.40.55 Forest Dynamics
Web Of Science research areas: Agronomy; Forestry; Meteorology & Atmospheric Sciences
ESI research areas: Agricultural Sciences