Evidence for widespread thermal acclimation of canopy photosynthesis

Evidence for widespread thermal acclimation of canopy photosynthesis | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Evidence for widespread thermal acclimation of canopy photosynthesis Jiangong Liu, Youngryel Ryu, Xiangzhong Luo, Benjamin Dechant, and 7 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4013319/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 08 Nov, 2024 Read the published version in Nature Plants → Version 1 posted You are reading this latest preprint version Abstract Plants acclimate to temperature by adjusting their photosynthetic capacity over weeks to months. However, most evidence for photosynthetic acclimation derives from leaf-scale experiments. Here, we address the scarcity of evidence for canopy-scale photosynthetic acclimation by examining the correlation between maximum photosynthetic rates (A max,2000 ) and growth temperature ( \(\stackrel{-}{{T}_{air}}\) ) across a range of concurrent temperatures and canopy foliage quantity, using data from over 200 eddy covariance sites. We detect widespread thermal acclimation of canopy-scale photosynthesis, demonstrated by enhanced A max,2000 under higher \(\stackrel{-}{{T}_{air}}\) , across flux sites with adequate water availability. A 14-day period is identified as the most relevant time scale for acclimation across all sites, with a range of 12–25 days for different plant functional types. The mean apparent thermal acclimation rate across all ecosystems is 0.41 (-0.47–1.05 for 5th–95th percentile range) µmol m − 2 s − 1 °C − 1 , with croplands showing the largest and grasslands the lowest acclimation rates. Incorporating optimality-based leaf photosynthetic capacity acclimation into a biochemical photosynthesis model is shown to improve the representation of thermal acclimation rates. Our results underscore the critical need for enhanced understanding and modelling of canopy-scale photosynthetic capacity to accurately predict plant responses to warmer growing seasons. Earth and environmental sciences/Ecology/Ecosystem ecology Biological sciences/Plant sciences/Plant ecology Full Text Additional Declarations There is NO Competing Interest. Supplementary Files AcclimationSILiuetal.docx Cite Share Download PDF Status: Published Journal Publication published 08 Nov, 2024 Read the published version in Nature Plants → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4013319","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":291072762,"identity":"9a3bfaa1-96e3-4030-8fe7-39b1a2ba4a57","order_by":0,"name":"Jiangong 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Portfolio","twitterHandle":"","acdcEnabled":false,"dfaEnabled":false,"editorialSystem":"ejp","reportingPortfolio":"","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-4013319/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4013319/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003ePlants acclimate to temperature by adjusting their photosynthetic capacity over weeks to months. However, most evidence for photosynthetic acclimation derives from leaf-scale experiments. Here, we address the scarcity of evidence for canopy-scale photosynthetic acclimation by examining the correlation between maximum photosynthetic rates (A\u003csub\u003emax,2000\u003c/sub\u003e) and growth temperature (\u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\stackrel{-}{{T}_{air}}\\)\u003c/span\u003e\u003c/span\u003e) across a range of concurrent temperatures and canopy foliage quantity, using data from over 200 eddy covariance sites. We detect widespread thermal acclimation of canopy-scale photosynthesis, demonstrated by enhanced A\u003csub\u003emax,2000\u003c/sub\u003e under higher \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\stackrel{-}{{T}_{air}}\\)\u003c/span\u003e\u003c/span\u003e, across flux sites with adequate water availability. A 14-day period is identified as the most relevant time scale for acclimation across all sites, with a range of 12\u0026ndash;25 days for different plant functional types. The mean apparent thermal acclimation rate across all ecosystems is 0.41 (-0.47\u0026ndash;1.05 for 5th\u0026ndash;95th percentile range) \u0026micro;mol m\u003csup\u003e\u0026minus;\u0026thinsp;2\u003c/sup\u003e s\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e \u0026deg;C\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e, with croplands showing the largest and grasslands the lowest acclimation rates. Incorporating optimality-based leaf photosynthetic capacity acclimation into a biochemical photosynthesis model is shown to improve the representation of thermal acclimation rates. Our results underscore the critical need for enhanced understanding and modelling of canopy-scale photosynthetic capacity to accurately predict plant responses to warmer growing seasons.\u003c/p\u003e","manuscriptTitle":"Evidence for widespread thermal acclimation of canopy photosynthesis","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-04-16 05:27:33","doi":"10.21203/rs.3.rs-4013319/v1","editorialEvents":[],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"nature-plants","isNatureJournal":true,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"nplants","sideBox":"Learn more about [Nature Plants](http://www.nature.com/nplants/)","snPcode":"","submissionUrl":"","title":"Nature Plants","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"ejp","reportingPortfolio":"Nature Research","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"e4d5b67e-5941-40dd-9265-63f2234e3abc","owner":[],"postedDate":"April 16th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":30658890,"name":"Earth and environmental sciences/Ecology/Ecosystem ecology"},{"id":30658891,"name":"Biological sciences/Plant sciences/Plant ecology"}],"tags":[],"updatedAt":"2024-11-09T08:10:21+00:00","versionOfRecord":{"articleIdentity":"rs-4013319","link":"https://doi.org/10.1038/s41477-024-01846-1","journal":{"identity":"nature-plants","isVorOnly":false,"title":"Nature Plants"},"publishedOn":"2024-11-08 05:00:00","publishedOnDateReadable":"November 8th, 2024"},"versionCreatedAt":"2024-04-16 05:27:33","video":"","vorDoi":"10.1038/s41477-024-01846-1","vorDoiUrl":"https://doi.org/10.1038/s41477-024-01846-1","workflowStages":[]},"version":"v1","identity":"rs-4013319","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4013319","identity":"rs-4013319","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}