The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation

Quantifying water use efficiency, and the impact of stomata on CO(2) uptake are pivotal in physiology and efforts to improve crop yields. Although tempting, relying on regression slopes from assimilation-stomatal conductance plots to estimate water use efficiency or stomatal control over assimilatio...

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Autor principal: Bellasio, Chandra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2023
Materias:
Brief Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10695868/
https://www.ncbi.nlm.nih.gov/pubmed/37902923
http://dx.doi.org/10.1007/s11120-023-01054-6
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author Bellasio, Chandra
author_facet Bellasio, Chandra
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description Quantifying water use efficiency, and the impact of stomata on CO(2) uptake are pivotal in physiology and efforts to improve crop yields. Although tempting, relying on regression slopes from assimilation-stomatal conductance plots to estimate water use efficiency or stomatal control over assimilation is erroneous. Through numerical simulations, I substantiate this assertion. I propose the term ‘instantaneous transpiration efficiency’ for the assimilation-to-transpiration ratio to avoid confusion with ‘intrinsic water use efficiency’ which refers to the assimilation-to-stomatal conductance ratio, and recommend to compute both metrics for each gas exchange data point.
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spelling pubmed-106958682023-12-06 The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation Bellasio, Chandra Photosynth Res Brief Report Quantifying water use efficiency, and the impact of stomata on CO(2) uptake are pivotal in physiology and efforts to improve crop yields. Although tempting, relying on regression slopes from assimilation-stomatal conductance plots to estimate water use efficiency or stomatal control over assimilation is erroneous. Through numerical simulations, I substantiate this assertion. I propose the term ‘instantaneous transpiration efficiency’ for the assimilation-to-transpiration ratio to avoid confusion with ‘intrinsic water use efficiency’ which refers to the assimilation-to-stomatal conductance ratio, and recommend to compute both metrics for each gas exchange data point. Springer Netherlands 2023-10-30 2023 /pmc/articles/PMC10695868/ /pubmed/37902923 http://dx.doi.org/10.1007/s11120-023-01054-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Brief Report
Bellasio, Chandra
The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
title The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
title_full The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
title_fullStr The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
title_full_unstemmed The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
title_short The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
title_sort slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation
topic Brief Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10695868/
https://www.ncbi.nlm.nih.gov/pubmed/37902923
http://dx.doi.org/10.1007/s11120-023-01054-6
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