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Root-to-shoot ABA signaling does not contribute to genotypic variation in stomatal functioning induced by high relative air humidity

2016Journal article Restricted access
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dc.contributor.authorCarvalho, Dália R. A.
dc.contributor.authorFanourakis, Dimitrios
dc.contributor.authorCorreia, Maria J.
dc.contributor.authorMonteiro, José A.
dc.contributor.authorAraújo-Alves, José Pedro L.
dc.contributor.authorVasconcelos, Marta W.
dc.contributor.authorAlmeida, Domingos P. F.
dc.contributor.authorHeuvelink, Ep
dc.contributor.authorCarvalho, Susana M. P.
dc.date.accessioned2017-10-13T07:56:46Z
dc.date.available2017-10-13T07:56:46Z
dc.date.issued2016
dc.description.abstractHigh relative air humidity (RH 85%) during leaf expansion hampers stomatal responsiveness to closing stimuli, a genotype-dependent effect. Genotypes with reduced stomatal closure in response to closing stimuli (i.e., sensitive genotypes) show low bulk leaf abscisic acid concentration ([ABA]). We hypothesized that the amount of ABA produced in the roots and delivered with the transpiration stream to the leaves is a critical step for a proper stomatal functioning in high RH-grown plants. Ten genotypes from a cut rose tetraploid population were grown at moderate (62%) or high (89%) RH. Stomatal anatomy and responsiveness to desiccation or ABA feeding were evaluated. Root and leaf petiole xylem sap [ABA] were quantified, and ABA delivery rate from root-to-shoot was estimated. High RH reduced stomatal responsiveness to both closing stimuli in the sensitive genotypes, whereas it had a nonsignificant effect in the tolerant ones. Estimates of [ABA] in root xylem sap at transpirational flow rate were not related to the genotypic differences in the sensitivity to high RH. However, high RH increased this concentration irrespective of the genotype, probably due to a reduced dilution of the [ABA] in the xylem sap as a result of a lower transpiration rate compared to moderate RH-grown plants. Leaf petiole xylem sap [ABA] was neither related to the genotypic differences in the sensitivity to high RH nor it was affected by RH. We concluded that genotypic differences in the stomatal sensitivity to high RH cannot be explained by changes in the [ABA] delivered with the transpiration stream from the roots to the leavespt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCARVALHO, Dália R.A.; FANOURAKIS, Dimitrios; CORREIA, Maria J.; MONTEIRO, José A.; ARAÚJO-ALVES, José Pedro L.; VASCONCELOS, Marta W.; ALMEIDA, Domingos P.F.; HEUVELINK, Ep; CARVALHO, Susana - Root-to-shoot ABA signaling does not contribute to genotypic variation in stomatal functioning induced by high relative air humidity. Environmental and Experimental Botany. ISSN 0098-8472. Vol. 123 (2016), p. 13-21pt_PT
dc.identifier.doi10.1016/j.envexpbot.2015.11.001pt_PT
dc.identifier.eid84946926381
dc.identifier.eissn1873-7307
dc.identifier.issn0098-8472
dc.identifier.urihttp://hdl.handle.net/10400.14/23066
dc.identifier.wos000369677300002
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier
dc.relationUNDERSTANDING AND ENHANCING POTENTIAL VASE LIFE OF ROSA HYBRIDA: FROM PRE-HARVEST CONDITIONS TO POST-HARVEST LONGEVITY
dc.relationModelling post-harvest quality of greenhouse roses: genotypic variation and environmental effects
dc.subjectAbscisic acidpt_PT
dc.subjectRelative water content Rosa hybridapt_PT
dc.subjectVapor pressure deficitpt_PT
dc.subjectStomatal anatomypt_PT
dc.subjectWater losspt_PT
dc.titleRoot-to-shoot ABA signaling does not contribute to genotypic variation in stomatal functioning induced by high relative air humiditypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleUNDERSTANDING AND ENHANCING POTENTIAL VASE LIFE OF ROSA HYBRIDA: FROM PRE-HARVEST CONDITIONS TO POST-HARVEST LONGEVITY
oaire.awardTitleModelling post-harvest quality of greenhouse roses: genotypic variation and environmental effects
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F72924%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAGR-AAM%2F67082%2F2006/PT
oaire.citation.endPage21
oaire.citation.startPage13
oaire.citation.titleEnvironmental and Experimental Botanypt_PT
oaire.citation.volume123
oaire.fundingStream3599-PPCDT
person.familyNameFanourakis
person.familyNameVasconcelos
person.familyNameCarvalho
person.givenNameDimitrios
person.givenNameMarta
person.givenNameSusana M.P.
person.identifier74696
person.identifier194747
person.identifier.ciencia-id5E16-859A-37A4
person.identifier.orcid0000-0002-6319-4223
person.identifier.orcid0000-0002-5110-7006
person.identifier.orcid0000-0001-7157-1079
person.identifier.ridI-8166-2013
person.identifier.ridI-7184-2013
person.identifier.scopus-author-id35361862300
person.identifier.scopus-author-id14627797100
person.identifier.scopus-author-id7005619826
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication02a2670a-940c-4ffa-95a4-145941dcd616
relation.isAuthorOfPublicationdf60ebb4-3b71-4733-a9e3-bfa4687f5576
relation.isAuthorOfPublicatione52d58d9-9c7d-4a20-afbd-04195a6ab912
relation.isAuthorOfPublication.latestForDiscoverye52d58d9-9c7d-4a20-afbd-04195a6ab912
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