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Protective Response Mechanisms to Heat Stress in Interaction with High [CO2] Conditions in Coffea spp.

2016-06-29Artigo científico Acesso aberto
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dc.contributor.authorMartins, Madlles Q.
dc.contributor.authorRodrigues, Weverton P.
dc.contributor.authorFortunato, Ana S.
dc.contributor.authorLeitão, António E.
dc.contributor.authorRodrigues, Ana P.
dc.contributor.authorPais, Isabel P.
dc.contributor.authorMartins, Lima D.
dc.contributor.authorSilva, Marcelo Gabeto
dc.contributor.authorReboredo, Fernando H.
dc.contributor.authorPartelli, Fabio L.
dc.contributor.authorCampostrini, Eliemar
dc.contributor.authorTomaz, Marcelo A.
dc.contributor.authorScotti-Campos, Paula
dc.contributor.authorRibeiro-Barros, Ana I.
dc.contributor.authorLidon, Fernando J. C.
dc.contributor.authorDaMatta, Fabio M.
dc.contributor.authorRamalho, José C.
dc.contributor.institutionGeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
dc.contributor.institutionDCT - Departamento de Ciências da Terra
dc.contributor.pblFrontiers Media
dc.date.accessioned2018-05-10T22:04:09Z
dc.date.available2018-05-10T22:04:09Z
dc.date.issued2016-06-29
dc.descriptionThis work was supported by national funds from Fundacao para a Ciencia e a Tecnologia through the projects PTDC/AGRPRO/3386/2012, the research units UID/AGR/04129/2013 (LEAF) and UID/GEO/04035/2013 (GeoBioTcc), as well through the grant SFRH/BPD/47563/2008 (AT) co-financed through the POPH program subsidized by the European Social Fund. Brazilian funding from CAPES (grams PDSE: 000427/2014-04, W.P. Rodrigues; 0343/2014-05, MM; 12226/12-2, LM), CNPq and Fapemig (fellowships to FDM, FP, and EC) are also greatly acknowledged.
dc.description.abstractModeling studies have predicted that coffee crop will be endangered by future global warming, but recent reports highlighted that high [CO2] can mitigate heat impacts on coffee. This work aimed at identifying heat protective mechanisms promoted by CO2 in Coffea arabica (cv. Icatu and IPR108) and Coffea canephora cv. Conilon CL153. Plants were grown at 25/20 degrees C (day/night), under 380 or 700 mu L CO2 L-1, and then gradually submitted to 31/25, 37/30, and 42/34 degrees C. Relevant heat tolerance up to 37/30 degrees C for both [CO2] and all coffee genotypes was observed, likely supported by the maintenance or increase of the pools of several protective molecules (neoxanthin, lutein, carotenes, ohtocopherol, HSP70, raffinose), activities of antioxidant enzymes, such as superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), catalase (CAT), and the upregulated expression of some genes (ELIP, Chaperonin 20). However, at 42/34 degrees C a tolerance threshold was reached, mostly in the 380 -plants and Icatu. Adjustments in raffinose, lutein, beta-carotene, alpha-tocopherol and HSP70 pools, and the upregulated expression of genes related to protective (FLIPS, HSP70, Chape 20, and 60) and antioxidant (CAT, CuSOD2, APX Cyt, APX ChI) proteins were largely driven by temperature. However, enhanced [CO2] maintained higher activities of GR (Icatu) and CAT (Icatu and IPR108), kept (or even increased) the Cu,Zn-SOD, APX, and CAT activities, and promoted a greater upregulation of those enzyme genes, as well as those related to HSP70, ELIPs, Chaperonins in CL153, and Icatu. These changes likely favored the maintenance of reactive oxygen species (ROS) at controlled levels and contributed to mitigate of photosystem II photoinhibition at the highest temperature. Overall, our results highlighted the important role of enhanced [CO2] on the coffee crop acclimation and sustainability under predicted future global warming scenarios.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent18
dc.format.extent952553
dc.identifier.doi10.3389/fpls.2016.00947
dc.identifier.issn1664-462X
dc.identifier.otherPURE: 1248305
dc.identifier.otherPURE UUID: ee638683-a74e-4f60-bb2d-d414db839822
dc.identifier.otherWOS: 000378694000001
dc.identifier.otherScopus: 84976486833
dc.identifier.otherPubMed: 27446174
dc.identifier.otherPubMedCentral: PMC4925694
dc.identifier.otherORCID: /0000-0002-3906-4349/work/54522840
dc.identifier.urihttp://hdl.handle.net/10362/36403
dc.language.isoeng
dc.peerreviewedyes
dc.subjectacclimation
dc.subjectantioxidants
dc.subjectcoffee
dc.subjectchloroplast
dc.subjectclimate change
dc.subjectenhanced [CO2]
dc.subjectglobal warming
dc.subjectheat
dc.subjectELEVATED CO2
dc.subjectHIGH-TEMPERATURE
dc.subjectCLIMATE-CHANGE
dc.subjectSUSTAINED ENHANCEMENT
dc.subjectCHLOROPLAST MEMBRANES
dc.subjectOXIDATIVE STRESS
dc.subjectPHOTOSYSTEM-II
dc.subjectSPP. PLANTS
dc.subjectRISING CO2
dc.subjectPHOTOSYNTHESIS
dc.subjectSDG 13 - Climate Action
dc.titleProtective Response Mechanisms to Heat Stress in Interaction with High [CO2] Conditions in Coffea spp.en
dc.typejournal article
degois.publication.titleFrontiers in Plant Science
degois.publication.volume7
dspace.entity.typePublication
rcaap.rightsopenAccess

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