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Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions

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.accessioned2021-09-27T13:03:04Z
dc.date.available2021-09-27T13:03:04Z
dc.date.issued2020
dc.description.abstractTaro (Colocasia esculenta (L.) Schott) is a staple food and represents an important food security role in most tropical regions. It is, unfortunately, susceptible to prolonged drought conditions. Abscisic acid (ABA) is a well-documented stress-induced phytohormone that tolerant crops usually accumulate in leaves to induce stomatal closure, preventing water loss through inhibition of transpiration. Hitherto, exists very scarce information regarding the ABA role in taro response to drought. Here, we determined the ABA content in the shoots and corms of taro subjected to seven months of water scarcity and linked ABA to other drought resilience traits, including carbon isotopic discrimination (Δ13C), oxalic acid (OA), chlorophyll content index (CCI), water use efciency (WUE), and biomass (B). The Δ13C-shoot content showed partially open stomata in all accessions, and signifcant correlation with Δ13C-corm, CCI, and WUE. The osmotically active OA-shoot decrease seemed not to interfere with the stomatal aperture. The tolerant accessions subjected to drought stress had higher B-corm, ABA shoot, Δ13C-shoot, CCI, OA, and WUE. However, the observed under drought conditions increase of ABA in the shoots, and its decrease in the corms were not signifcantly correlated, nor with other traits, suggesting that ABA was not the main regulator of taro physiological processes under stress. The information gained should be considered in breeding programs to predict taro’s response to climate change.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. Â. P. (2020). Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions. Acta Physiologiae Plantarum, 42(12), 1-11. https://doi.org/10.1007/s11738-020-03162-5pt_PT
dc.identifier.doi10.1007/s11738-020-03162-5pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3665
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCarbon isotopept_PT
dc.subjectChlorophyll content indexpt_PT
dc.subjectDrought stresspt_PT
dc.subjectEnzyme-linked immunosorbent assaypt_PT
dc.subjectOxalic acidpt_PT
dc.subjectWater use efciencypt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleInvolvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue12pt_PT
oaire.citation.titleActa Physiologiae Plantarumpt_PT
oaire.citation.volume42pt_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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relation.isAuthorOfPublicationd5a8bb82-d9e9-4b7d-8852-e65a5931b17d
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relation.isAuthorOfPublication.latestForDiscovery0d114ba6-d4cd-4e86-850e-78b1ed354917

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