Constitutive gibberellin response in grafted tomato modulates root-to-shoot signaling under drought stress

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dc.contributor.authorGaion, Lucas Aparecido [UNESP]
dc.contributor.authorMonteiro, Carolina Cristina [UNESP]
dc.contributor.authorRodrigues Cruz, Flavio Jose [UNESP]
dc.contributor.authorRossatto, Davi Rodrigo [UNESP]
dc.contributor.authorLopez-Diaz, Isabel
dc.contributor.authorCarrera, Esther
dc.contributor.authorLima, Joni Esrom
dc.contributor.authorPereira Peres, Lazaro Eustaquio
dc.contributor.authorCarvalho, Rogerio Falleiros [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCSIC UPV
dc.contributor.institutionUniversidade Federal de Minas Gerais (UFMG)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2018-11-26T17:45:09Z
dc.date.available2018-11-26T17:45:09Z
dc.date.issued2018-02-01
dc.description.abstractPlants are sessile organisms that must perceive and respond to various environmental constraints throughout their life cycle. Among these constraints, drought stress has become the main limiting factor to crop production around the world. Water deprivation is perceived primarily by the roots, which efficiently signal the shoot to trigger drought responses in order to maximize a plant's ability to survive. In this study, the tomato (Solanum lycopersicum L.) mutant procera (pro), with a constitutive response to gibberellin (GA), and its near isogenic line cv. Micro-Tom (MT), were used in reciprocal grafting under well-watered and water stress conditions to evaluate the role of GA signaling in root-to-shoot communication during drought stress. Growth, oxidative stress, gene expression, water relations and hormonal content were measured in order to provide insights into GA-mediated adjustments to water stress. All graft combinations with pro (i.e. pro/pro, MT/pro and pro/MT) prevented the reduction of growth under stress conditions without a reduction in oxidative stress. The increase of oxidative stress was followed by upregulation of SlDREB2, a drought-tolerance related gene, in all drought-stressed plants. Scions harboring the pro mutation tended to increase the abscisic acid (ABA) content, independent of the rootstock. Moreover, the GA sensitivity of the rootstock modulated stomatal conductance and water use efficiency under drought stress, indicating GA and ABA crosstalk in the adjustment of growth and water economy.en
dc.description.affiliationSao Paulo State Univ, Dept Biol Appl Agr, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, Brazil
dc.description.affiliationCSIC UPV, Inst Plant Mol & Cellular Biol IBMCP, Carrer Enginyer Fausto Elio, Valencia 46011, Spain
dc.description.affiliationUniv Fed Minas Gerais, Inst Biol Sci, Bot Dept, Avea Presidente Antonio Carlos,6627, Belo Horizonte, MG, Brazil
dc.description.affiliationUniv Sao Paulo, Dept Biol Sci, Ave Padua Dias, BR-13418900 Piracicaba, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Biol Appl Agr, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2014/19165-2
dc.format.extent11-21
dc.identifierhttp://dx.doi.org/10.1016/j.jplph.2017.12.003
dc.identifier.citationJournal Of Plant Physiology. Jena: Elsevier Gmbh, Urban & Fischer Verlag, v. 221, p. 11-21, 2018.
dc.identifier.doi10.1016/j.jplph.2017.12.003
dc.identifier.fileWOS000424760300002.pdf
dc.identifier.issn0176-1617
dc.identifier.urihttp://hdl.handle.net/11449/163837
dc.identifier.wosWOS:000424760300002
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal Of Plant Physiology
dc.relation.ispartofsjr1,178
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectAbiotic stress
dc.subjectGrafting
dc.subjectRoot-to-shoot signaling
dc.subjectStomatal movement
dc.subjectWater relations
dc.subjectWater stress
dc.titleConstitutive gibberellin response in grafted tomato modulates root-to-shoot signaling under drought stressen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0001-5436-6081[7]
unesp.departmentBiologia - FCAVpt

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