{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T11:46:28Z","timestamp":1785325588237,"version":"3.55.0"},"reference-count":90,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T00:00:00Z","timestamp":1779148800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"name":"Next Generation Ecosystem Experiments-Tropics project"},{"DOI":"10.13039\/100000015","name":"US Department of Energy","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000015","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Office of Science, Office of Biological and Environmental Research"},{"DOI":"10.13039\/100000015","name":"US Department of Energy","doi-asserted-by":"publisher","award":["DE-AC02-05CH11231"],"award-info":[{"award-number":["DE-AC02-05CH11231"]}],"id":[{"id":"10.13039\/100000015","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100006235","name":"Lawrence Berkeley National Laboratory","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100006235","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,6,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Understanding how leaf gas exchange responds to changes in vapor pressure deficit (VPD) is key to predicting tropical forest resilience to climate change. Stomata regulate leaf water and CO2 diffusion, and respond to changes in temperature and relative humidity (RH), two drivers of VPD. At high temperatures, the cuticular pathway may also become significant and participate in the overall leaf conductance. Here, we measured gas exchange under light and dark conditions to investigate the stomatal and cuticular responses to temperature and RH on detached branches in five tropical tree species. Leaf conductance in the dark, when stomata are essentially closed, was not markedly impacted by temperature and RH, suggesting a minimal response of the cuticular pathway to these conditions. We compared six steady-state conductance models incorporating different effects of photosynthesis and evaporative demand on stomatal control. All models performed well (residual standard deviation, \u03c3, &amp;lt;\u20090.025\u00a0mol\u00a0m\u22122\u00a0s\u22121), but the best-fitting model (\u03c3\u00a0=\u00a00.017\u00a0mol\u00a0m\u22122\u00a0s\u22121) used a nonlinear relationship between photosynthesis and stomatal conductance and incorporated RH rather than vapor pressure difference. All models overestimated the steady-state conductance at high RH. Furthermore, leaf conductance immediately increased after a decrease in RH (wrong-way response), but not after an increase in leaf temperature. This suggests that the mechanisms underlying stomatal response to VPD need further investigation. The non-linear coupling between photosynthetic rate and stomatal conductance indicates a sharper physiological response than previously acknowledged.<\/jats:p>","DOI":"10.1093\/treephys\/tpag067","type":"journal-article","created":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T11:19:54Z","timestamp":1779103194000},"source":"Crossref","is-referenced-by-count":2,"title":["The effect of relative humidity and temperature on the response of stomatal conductance to vapor pressure deficit in tropical trees"],"prefix":"10.1093","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4410-507X","authenticated-orcid":false,"given":"Julien","family":"Lamour","sequence":"first","affiliation":[{"name":"Centre de Recherche sur la Biodiversit\u00e9 et l'Environnement (CRBE), Universit\u00e9 de Toulouse, CNRS, IRD, Toulouse INP, Universit\u00e9 Toulouse 3 \u2013 Paul Sabatier (UT3) , 118 Rte de Narbonne, 31077, Toulouse ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5745-9689","authenticated-orcid":false,"given":"Kenneth J","family":"Davidson","sequence":"additional","affiliation":[{"name":"American Forests , 1220 L Street, NW, Suite 750, Washington, DC 20005 ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7766-1347","authenticated-orcid":false,"given":"J\u00e9r\u00f4me","family":"Chave","sequence":"additional","affiliation":[{"name":"Centre de Recherche sur la Biodiversit\u00e9 et l'Environnement (CRBE), Universit\u00e9 de Toulouse, CNRS, IRD, Toulouse INP, Universit\u00e9 Toulouse 3 \u2013 Paul Sabatier (UT3) , 118 Rte de Narbonne, 31077, Toulouse ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5558-1792","authenticated-orcid":false,"given":"Martijn","family":"Slot","sequence":"additional","affiliation":[{"name":"Smithsonian Tropical Research Institute , Apartado 0843-03092, Balboa, Anc\u00f3n ,","place":["Republic of Panama"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4136-8971","authenticated-orcid":false,"given":"Shawn P","family":"Serbin","sequence":"additional","affiliation":[{"name":"Biospheric Sciences Laboratory (BSL), Code 618 NASA Goddard Space Flight Center 8800 \u00a0 Greenbelt Road Greenbelt, MD 20771 ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9262-7430","authenticated-orcid":false,"given":"Alistair","family":"Rogers","sequence":"additional","affiliation":[{"name":"Climate and Ecosystems Sciences Division, Lawrence Berkeley 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