Methyl jasmonate modulation reduces photosynthesis and induces synthesis of phenolic compounds in sweet potatoes subjected to drought

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dc.contributor.authorPereira Yoshida, Camila Hatsu
dc.contributor.authorPacheco, Ana Claudia
dc.contributor.authorLapaz, Allan de Marcos [UNESP]
dc.contributor.authorGorni, Pedro Henrique
dc.contributor.authorVitolo, Hilton Fabricio
dc.contributor.authorBertoli, Suzana Chiari
dc.contributor.institutionUniv Oeste Paulista
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFac Gammon
dc.date.accessioned2020-12-10T20:11:45Z
dc.date.available2020-12-10T20:11:45Z
dc.date.issued2020-07-01
dc.description.abstractSweet potato [Ipomoea batatas (L.) Lam.] has wide adaptability to different climatic conditions. However, its yield can be affected by prolonged periods of drought. Application of exogenous jasmonates can modulate several physiological and biochemical processes, improving plant tolerance to abiotic stress. This study sought to evaluate the role of exogenous application of methyl jasmonate (MeJA) in attenuating the adverse effects of drought stress by physiobiochemical analyses and their impact during the early initiation of tuberous roots. The experimental design was completely randomized and arranged in a 2 x 2 factorial, comprised of two concentrations of a MeJA plant regulator [without (0 mmol.L-1)and with (13 mmol.L-1) application] and two water regimes (optimum and drought conditions, corresponding to a field capacity of 100 and 40%, respectively). Plants treated with MeJA showed a reduction in total leaf area and leaf dry biomass but increased adventitious root dry biomass. In addition, MeJA application in sweet potato plants affected photosynthetic performance and increased and antioxidant phenolic compounds, carotenoids, anthocyanins,and proline. The evaluated response mechanisms showed that the severity of drought was more prominent than the positive effects of MeJA, since the increases on antioxidant pigments and secondary metabolites were not sufficient to mitigate stress caused by drought, which was reflected in the reduced tuberous root production.en
dc.description.affiliationUniv Oeste Paulista, Ctr Estudos Ecofisiol Vegetal Oeste Paulista, Presidente Prudente, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Engn, Dept Biol & Zootecnia, Ilha Solteira, SP, Brazil
dc.description.affiliationFac Gammon, Dept Agron, Paraguacu Paulista, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Engn, Dept Biol & Zootecnia, Ilha Solteira, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent319-334
dc.identifierhttp://dx.doi.org/10.1590/1678-4499.20200203
dc.identifier.citationBragantia. Campinas: Inst Agronomico, v. 79, n. 3, p. 319-334, 2020.
dc.identifier.doi10.1590/1678-4499.20200203
dc.identifier.fileS0006-87052020000300319.pdf
dc.identifier.issn0006-8705
dc.identifier.scieloS0006-87052020000300319
dc.identifier.urihttp://hdl.handle.net/11449/197276
dc.identifier.wosWOS:000565782100002
dc.language.isoeng
dc.publisherInst Agronomico
dc.relation.ispartofBragantia
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectphotosynthetic performance
dc.subjectphenylalanine ammonia lyase
dc.subjecttuberous roots
dc.subjectIpomoea batatas (L.)
dc.titleMethyl jasmonate modulation reduces photosynthesis and induces synthesis of phenolic compounds in sweet potatoes subjected to droughten
dc.typeArtigo
dcterms.rightsHolderInst Agronomico
unesp.author.orcid0000-0002-5312-0634[2]

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