Acclimation of biochemical and diffusive components of photosynthesis in rice, wheat and maize to heat and water deficit: implications for modeling photosynthesis

Perdomo, Juan A.; Carmo Silva, Eliazabete; Hermida Carrera, Carmen; Flexas Sans, Jaume; Galmés Galmés, Jeroni

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dc.contributor.author	Perdomo, Juan A.
dc.contributor.author	Carmo Silva, Eliazabete
dc.contributor.author	Hermida Carrera, Carmen
dc.contributor.author	Flexas Sans, Jaume
dc.contributor.author	Galmés Galmés, Jeroni
dc.date.accessioned	2018-11-12T11:53:44Z
dc.date.available	2018-11-12T11:53:44Z
dc.identifier.uri	http://hdl.handle.net/11201/148506
dc.description.abstract	[eng] heimpactofthecombinedeffectsofheatstress,increasedvaporpressuredeficit(VPD)andwaterdeficitonthephysiologyofmajorcropsneedstobebetterunderstoodtohelpidentifyingtheexpectednegativeconsequencesofclimatechangeandheatwavesonglobalagriculturalproductivity.Toaddressthisissue,rice,wheat,andmaizeplantsweregrownundercontroltemperature(CT,25◦C,VPD1.8kPa),andahightemperature(HT,38◦C,VPD3.5kPa),bothunderwell-watered(WW)andwaterdeficit(WD)conditions.Gas-exchangemeasurementsshowedthat,ingeneral,WDconditionsaffectedtheleafconductancetoCO2,whilegrowthatHThadamoremarkedeffectonthebiochemistryofphotosynthesis.Whencombined,HTandWDhadanadditiveeffectinlimitingphotosynthesis.Thenegativeimpactsoftheimposedtreatmentsontheprocessesgoverningleafgas-exchangewerespecies-dependent.Wheatpresentedahighersensitivitywhilericeandmaizeshowedahigheracclimationpotentialtoincreasedtemperature.RubiscoandPEPCkineticconstantsdeterminedinvitroat25◦Cand38◦CwereusedtoestimateVcmax,Jmax,andVpmaxinthemodelingofC3andC4photosynthesis.Theresultshereobtainedreiteratetheneedtousespecies-specificandtemperature-specificvaluesforRubiscoandPEPCkineticconstantsforapreciseparameterizationoftheph
dc.format	application/pdf
dc.relation.isformatof	https://doi.org/10.3389/fpls.2016.01719
dc.relation.ispartof	Frontiers In Plant Science, 2016, vol. 7, p. 1719
dc.rights	, 2016
dc.subject.classification	57 - Biologia
dc.subject.other	57 - Biological sciences in general
dc.title	Acclimation of biochemical and diffusive components of photosynthesis in rice, wheat and maize to heat and water deficit: implications for modeling photosynthesis
dc.type	info:eu-repo/semantics/article
dc.date.updated	2018-11-12T11:53:44Z
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.identifier.doi	https://doi.org/10.3389/fpls.2016.01719