Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133042
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorLIMA, C. P. C. de
dc.contributor.authorOSTER, A. H.
dc.contributor.authorCAVALCANTI, F. R.
dc.contributor.authorPAULA, R. C. M. de
dc.contributor.authorFEITOSA, J. P. A.
dc.date.accessioned2021-07-20T14:01:22Z-
dc.date.available2021-07-20T14:01:22Z-
dc.date.created2021-07-20
dc.date.issued2021
dc.identifier.citationPolímeros, v. 31, n. 1, e2021010, p. 1-8, julho 2021.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1133042-
dc.descriptionElicitors activate the defense mechanism in plants to resist pathogens. Ulvans and glucuronans can act as elicitors, and their activity seems to be related to the sulfate groups, rhamnose and uronic acid monosaccharides. Chichá gum (CHG), which also contains rhamnose and uronic acid, was sulfated with chlorosulfonic acid/N,N-dimethylformamide and deacetylated with sodium hydroxide solution. The changes were confirmed by infrared spectroscopy. Carbon-13 NMR revealed that sulfation occurred in galactose and rhamnose units. The apples were sprayed with water (negative control), deacetylated chichá gum (DCHG), and sulfated chichá gum (SCHG). The activity of enzymes guaiacol peroxidase and polyphenol oxidases and the lignin content were compared with those under the action of a commercial elicitor, benzothiadiazole. DCHG, and especially SCHG, increased the activity of the two enzymes. Only fruits treated with SCHG showed a significant (p<0.05) increase in lignin content. The plant exudate can be one abundant, renewable and safe source of elicitors. Keywords: benzothiadiazole (BTH), Sterculia striata, elicitor, polysaccharide, sulfation.
dc.language.isoeng
dc.rightsopenAccesseng
dc.subjectBenzothiadiazole (BTH)
dc.subjectElicitor
dc.subjectPolysaccharide
dc.subjectSulfation
dc.titleInduction of defense in apples by sulfated and deacetylated chichá gum.
dc.typeArtigo de periódico
dc.subject.nalthesaurusSterculia striata
riaa.ainfo.id1133042
riaa.ainfo.lastupdate2021-07-20
dc.identifier.doihttps://doi.org/10.1590/0104-1428.08820
dc.contributor.institutionCARLOS PINHEIRO CHAGAS DE LIMA, Laboratório de Polímeros - LabPol, Departamento de Química Orgânica e Inorgânica - DQOI, Universidade Federal do Ceará - UFC, Fortaleza, CE, Brasil; ANDREIA HANSEN OSTER, CNPUV; FABIO ROSSI CAVALCANTI, CNPUV; REGINA CÉLIA MONTEIRO DE PAULA, Laboratório de Polímeros - LabPol, Departamento de Química Orgânica e Inorgânica - DQOI, Universidade Federal do Ceará - UFC, Fortaleza, CE, Brasil; JUDITH PESSOA ANDRADE FEITOSA, Laboratório de Polímeros - LabPol, Departamento de Química Orgânica e Inorgânica - DQOI, Universidade Federal do Ceará - UFC, Fortaleza, CE, Brasil.
Aparece nas coleções:Artigo em periódico indexado (CNPUV)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
Lima-polimeros-2021.pdf1,98 MBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace