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Abscisic acid phytohormone estimation in tubers and shoots of Ipomoea batatas subjected to long drought stress using competitive immunological assay

2020Journal article Open access
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dc.contributor.authorGouveia, Carla S. S.
dc.contributor.authorGanança, José F. T.
dc.contributor.authorSlaski, Jan J.
dc.contributor.authorLebot, Vincent
dc.contributor.authorCarvalho, Miguel Â. A. Pinheiro de
dc.date.accessioned2021-09-27T12:38:29Z
dc.date.available2021-09-27T12:38:29Z
dc.date.issued2020
dc.description.abstractSweet potato (Ipomoea batatas L.), typically cultivated in temperate climates under low inputs, is one of the most important crops worldwide. Abscisic acid (ABA) is an important plant stress-induced phytohormone. Hitherto, few works analyzed the ABA function in sweet potato tissue growth. Very scarce information is available concerning the ABA role in sweet potato response to water scarcity conditions. Here, we show the ABA content var iation in shoots and tubers of eight sweet potato accessions subjected to drought stress. ABA was also related to other resistance traits, such as chlo rophyll content index (CCI), carbon isotopic discrimination (Δ13C), oxalic acid (OA) and water use efficiency (WUE), to assess stress response mecha nisms to water deficit between their organs. The most resilient drought stressed sweet potato plants accumulated ABA-shoot, and significantly decreased the ABA-tuber content. ABA signaling was related to Δ13C and CCI decrease and WUE increment, as an attempt to cope with water stress by partially closing the stomata. The partial closure of stomata could be in part due to the presence of OA-shoots, known to affect the intensity of the ABA-shoot signal in stomatal closure. Higher CCI content and minimal Δ13C-shoot differences indicated good carboxylation fractionation, with higher Δ13C-tuber content as an indicator of efficient tuber 13C fixation and growth. Our work demonstrated that ABA could be used in conjunction with the other traits studied for the assessment of sweet potato whole-plant responses to environmental stresses, and thus aid the selection of the best drought tolerant genotypes for breeding programs.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGouveia, C. S., Ganança, J. F., Slaski, J. J., Lebot, V., & Carvalho, M. A. P. (2021). Abscisic acid phytohormone estimation in tubers and shoots of Ipomoea batatas subjected to long drought stress using competitive immunological assay. Physiologia Plantarum, 172(2), 419-430. https://doi.org/10.1111/ppl.13192pt_PT
dc.identifier.doi10.1111/ppl.13192pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3664
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectIpomoea batataspt_PT
dc.subjectSweet potatopt_PT
dc.subjectAbscisic acid phytohormonept_PT
dc.subjectDrought stresspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleAbscisic acid phytohormone estimation in tubers and shoots of Ipomoea batatas subjected to long drought stress using competitive immunological assaypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage430pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage419pt_PT
oaire.citation.titlePhysiologia Plantarumpt_PT
oaire.citation.volume172pt_PT
person.familyNameGouveia
person.familyNameGanança
person.familyNameLebot
person.familyNameAlmeida Pinheiro de Carvalho
person.givenNameCarla
person.givenNameJosé Filipe
person.givenNameVincent
person.givenNameMiguel Angelo
person.identifier1218558
person.identifier.ciencia-idAE1B-9773-68A8
person.identifier.ciencia-id4610-6741-6816
person.identifier.orcid0000-0001-9309-4613
person.identifier.orcid0000-0002-8384-6188
person.identifier.orcid0000-0001-5699-0566
person.identifier.orcid0000-0002-5084-870X
person.identifier.ridAAH-9928-2020
person.identifier.ridAEE-0913-2022
person.identifier.scopus-author-id55554091900
person.identifier.scopus-author-id8758577600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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