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Sensitivity of plants to changing atmospheric CO2 concentration: from the geological past tothe next century

Franks, Peter; Adams, Mark; Amthor, Jeffrey S; Barbour, Margaret; Berry, Joseph; Ellsworth, David S; Ghannoum, Oula; Lloyd, Jonathan; Lloyd, Jon; McDowell, Nate G; Norby, Richard J; Tissue, David; von Caemmerer, Susanne; Farquhar, Graham

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1The rate of CO2 assimilation by plants is directly influenced by the concentration of CO2 in the atmosphere, ca. As an environmental variable, ca also has a unique global and historic significance. Although relatively stable and uniform in the short term, global ca has varied substantially on the timescale of thousands to millions of years, and currently is increasing at seemingly an unprecedented rate. This may exert profound impacts on both climate and plant function. Here we utilise...[Show more]

dc.contributor.authorFranks, Peter
dc.contributor.authorAdams, Mark
dc.contributor.authorAmthor, Jeffrey S
dc.contributor.authorBarbour, Margaret
dc.contributor.authorBerry, Joseph
dc.contributor.authorEllsworth, David S
dc.contributor.authorGhannoum, Oula
dc.contributor.authorLloyd, Jonathan
dc.contributor.authorLloyd, Jon
dc.contributor.authorMcDowell, Nate G
dc.contributor.authorNorby, Richard J
dc.contributor.authorTissue, David
dc.contributor.authorvon Caemmerer, Susanne
dc.contributor.authorFarquhar, Graham
dc.date.accessioned2015-12-10T22:27:46Z
dc.identifier.issn0028-646X
dc.identifier.urihttp://hdl.handle.net/1885/54352
dc.description.abstract1The rate of CO2 assimilation by plants is directly influenced by the concentration of CO2 in the atmosphere, ca. As an environmental variable, ca also has a unique global and historic significance. Although relatively stable and uniform in the short term, global ca has varied substantially on the timescale of thousands to millions of years, and currently is increasing at seemingly an unprecedented rate. This may exert profound impacts on both climate and plant function. Here we utilise extensive datasets and models to develop an integrated, multi-scale assessment of the impact of changing ca on plant carbon dioxide uptake and water use. We find that, overall, the sensitivity of plants to rising or falling ca is qualitatively similar across all scales considered. It is characterised by an adaptive feedback response that tends to maintain 1 - ci/ca, the relative gradient for CO2 diffusion into the leaf, relatively constant. This is achieved through predictable adjustments to stomatal anatomy and chloroplast biochemistry. Importantly, the long-term response to changing ca can be described by simple equations rooted in the formulation of more commonly studied short-term responses.
dc.publisherCambridge University Press
dc.sourceNew Phytologist
dc.subjectKeywords: carbon dioxide; water; anatomy; assessment method; biomass allocation; carbon dioxide; chloroplast; climate change; climate modeling; concentration (composition); data set; diffusion; drought stress; gas exchange; numerical model; sensitivity analysis; st Climate change; CO 2; Drought; Fossils; Global climate models; Plant gas exchange; Stomatal conductance; Water use efficiency
dc.titleSensitivity of plants to changing atmospheric CO2 concentration: from the geological past tothe next century
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume197
dc.date.issued2013
local.identifier.absfor060705 - Plant Physiology
local.identifier.ariespublicationu4956746xPUB298
local.type.statusPublished Version
local.contributor.affiliationFranks, Peter, University of Sydney
local.contributor.affiliationAdams, Mark, University of Sydney
local.contributor.affiliationAmthor, Jeffrey S, University of Sydney
local.contributor.affiliationBarbour, Margaret, University of Sydney
local.contributor.affiliationBerry, Joseph, Carnegie Institution of Washington
local.contributor.affiliationEllsworth, David S, University of Western Sydney
local.contributor.affiliationFarquhar, Graham, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationGhannoum, Oula, University of Western Sydney
local.contributor.affiliationLloyd, Jonathan, University of Leeds
local.contributor.affiliationLloyd, Jon, James Cook University
local.contributor.affiliationMcDowell, Nate G, Los Alamos National Laboratory
local.contributor.affiliationNorby, Richard J, Oak Ridge National Laboratory
local.contributor.affiliationTissue, David, University of Western Sydney
local.contributor.affiliationvon Caemmerer, Susanne, College of Medicine, Biology and Environment, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue4
local.bibliographicCitation.startpage1077
local.bibliographicCitation.lastpage1094
local.identifier.doi10.1111/nph.12104
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2016-02-24T11:27:54Z
local.identifier.scopusID2-s2.0-84873264986
local.identifier.thomsonID000314656200008
CollectionsANU Research Publications

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