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Intrinsic non-stomatal resilience to drought of the photosynthetic apparatus in Coffea spp. is strengthened by elevated air [CO2]

2021-05Journal article Restricted access
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dc.contributor.authorJN
dc.contributor.authorRodrigues, Ana P.
dc.contributor.authorLidon, Fernando C.
dc.contributor.authorP. Pais, Isabel
dc.contributor.authorMarques, Isabel
dc.contributor.authorGouveia, Duarte
dc.contributor.authorARMENGAUD, Jean
dc.contributor.authorSilva, Maria J.
dc.contributor.authorMartins, Sónia
dc.contributor.authorSemedo, Magda C.
dc.contributor.authorDubberstein, Danielly
dc.contributor.authorPartelli, Fábio Luiz
dc.contributor.authorReboredo, Fernando H.
dc.contributor.authorScotti-Campos, Paula
dc.contributor.authorRibeiro-Barros, Ana I
dc.contributor.authorDaMatta, Fabio
dc.contributor.authorRamalho, José C.
dc.date.accessioned2021-06-18T09:38:56Z
dc.date.available2021-06-18T09:38:56Z
dc.date.issued2021-05
dc.description.abstractGrowing water restrictions associated with climate changes constitute daunting challenges to crop performance. This study unveils the impacts of moderate (MWD) or severe (SWD) water deficit, and their interaction with air [CO2], on the photosynthetic apparatus of Coffea canephora Pierre ex A. Froehner cv. Conilon Clone 153 (CL153) and Coffea arabica L. cv. Icatu. Seven year-old potted plants grown under 380 (aCO(2)) or 700 mu l l (-1) (eCO(2)) [CO2] gradually reached predawn water potentials between -1.6 and -2.1 MPa (MWD), and below -3.5 MPa (SWD). Under drought, stomata closure was chiefly related to abscisic acid (ABA) rise. Increasing drought severity progressively affected gas exchange and fluorescence parameters in both genotypes, with non-stomatal limitations becoming gradually dominating, especially regarding the photochemical and biochemical components of CL153 SWD plants. In contrast, Icatu plants were highly tolerant to SWD, with minor, if any, negative impacts on the potential photosynthetic functioning and components (e.g., A(max), F-v/F-m, electron carriers, photosystems (PSs) and ribulose-1,5-bisphosphate carboxylase oxygenase (RuBisCO) activities). Besides, drought-stressed Icatu plants displayed increased abundance of a large set of proteins associated with the photosynthetic apparatus (PSs, light-harvesting complexes, cyclic electron flow, RuBisCO activase) regardless of [CO2]. Single eCO(2) did not promote stomatal and photosynthetic down-regulation in both genotypes. Instead, eCO(2) increased photosynthetic performance, moderately reinforced photochemical (PSs activity, electron carriers) and biochemical (RuBisCO, ribulose-5-phosphate kinase) components, whereas photoprotective mechanisms and protein abundance remained mostly unaffected. In both genotypes, under MWD, eCO(2) superimposition delayed stress severity and promoted photosynthetic functioning with lower energy dissipation and PSII impacts, whereas stomatal closure was decoupled from increases in ABA. In SWD plants, most impacts on the photosynthetic performance were reduced by eCO(2), especially in the moderately drought affected CL153 genotype, although maintaining RuBisCO as the most sensitive component, deserving special breeder's attention to improve coffee sustainability under future climate scenarios.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSEMEDO, José N.; [et al] – Intrinsic non-stomatal resilience to drought of the photosynthetic apparatus in Coffea spp. is strengthened by elevated air [CO2]. Tree Physiology. ISSN 0829-318X. Vol. 41, N.º 5 (2021), pp. 708-727pt_PT
dc.identifier.doi10.1093/treephys/tpaa158pt_PT
dc.identifier.eissn1758-4469
dc.identifier.issn0829-318X
dc.identifier.urihttp://hdl.handle.net/10400.21/13458
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherOxford Academicpt_PT
dc.relationPTDC/ASP-AGR/31257/2017 - FCTpt_PT
dc.relationBREEDing Coffee for AgroForestry Systems
dc.relationUIDP/04035/2020 - GeoBioTecpt_PT
dc.relationCRA-RED-00053-16 - Fundação de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG)pt_PT
dc.subjectAcclimationpt_PT
dc.subjectC-assimilationpt_PT
dc.subjectClimate changept_PT
dc.subjectCO2 mitigationpt_PT
dc.subjectCoffee treept_PT
dc.subjectDroughtpt_PT
dc.titleIntrinsic non-stomatal resilience to drought of the photosynthetic apparatus in Coffea spp. is strengthened by elevated air [CO2]pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBREEDing Coffee for AgroForestry Systems
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/727934/EU
oaire.citation.endPage727pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage708pt_PT
oaire.citation.titleTree Physiologypt_PT
oaire.citation.volume41pt_PT
oaire.fundingStreamH2020
person.familyNameNobre Semedo
person.familyNameP. Pais
person.familyNameMarques
person.familyNameARMENGAUD
person.familyNameMartins
person.familyNameSemedo
person.familyNamePartelli
person.familyNameScotti-Campos
person.familyNameRIBEIRO-BARROS
person.familyNameDaMatta
person.familyNameRamalho
person.givenNameJosé Manuel Ferreira
person.givenNameIsabel
person.givenNameIsabel
person.givenNameJean
person.givenNameSónia
person.givenNameMagda
person.givenNameFábio Luiz
person.givenNamePaula
person.givenNameANA I
person.givenNameFabio
person.givenNameJosé
person.identifierV-5795-2017
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project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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