Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1159794
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorAIDAR, S. de T.
dc.contributor.authorCHAVES, A. R. de M.
dc.contributor.authorFERNANDES JUNIOR, P. I.
dc.contributor.authorMORGANTE, C. V.
dc.date.accessioned2023-12-15T14:32:35Z-
dc.date.available2023-12-15T14:32:35Z-
dc.date.created2023-12-15
dc.date.issued2023
dc.identifier.citationRodriguésia, v. 74, e00672023, 2023.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1159794-
dc.descriptionVegetative desiccation tolerance (VDT) is a biological process that allows resurrection plants to complete desiccation-rehydration cycles and survive without permanent damage. Physiological and biochemical changes related to the VDT were evaluated in the lycophyte Selaginella convoluta from the Caatinga biome, a seasonally dry tropical forest of northeastern Brazil. As representative of the oldest division of extant vascular plants, the investigation of VDT mechanisms in this species serves as an opportunity to provide information for research communities interested in functional traits related to water-limited conditions. The experiments were performed with plants in their natural habitat, in dry and rainy seasons, and in pots under shade house conditions. Relative water content, chlorophyll a fluorescence, gas exchange, activity of antioxidant enzymes, concentration of chlorophylls, proteins, total amino acids, proline, and soluble carbohydrates in leaf tissues were evaluated throughout the process of complete dehydration and subsequent re-watering of intact plants. The overall results reveal the capacity of S. convoluta to tolerate extreme dehydration and rapidly recover upon rehydration. This species minimizes potential damages during the desiccation-rehydration cycle due to the presence of inductive mechanisms (photochemical preventing, sucrose accumulation) and constitutive mechanisms (antioxidant activity of catalase and ascorbate peroxidase), which share similarities with the VDT of both angiosperms and bryophytes.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectResistência à desidratação
dc.subjectCaracterística funcional
dc.subjectPlanta de ressurreição
dc.subjectEstratégia de sobrevivência
dc.subjectDessecação vegetativa
dc.subjectBioma Caatinga
dc.titleFerns and Lycophytes as new challenges: physiological and biochemical changes in desiccation and rehydration cycles of Selaginella convoluta (Selaginellaceae).
dc.typeArtigo de periódico
dc.subject.thesagroSamambaia
dc.subject.thesagroCaatinga
dc.subject.nalthesaurusSelaginella
riaa.ainfo.id1159794
riaa.ainfo.lastupdate2023-12-15
dc.identifier.doihttp://dx.doi.org/10.1590/2175-7860202374088
dc.contributor.institutionSAULO DE TARSO AIDAR, CPATSA
dc.contributor.institutionAGNALDO RODRIGUES DE MELO CHAVES, CPATSAeng
dc.contributor.institutionPAULO IVAN FERNANDES JUNIOR, CPATSAeng
dc.contributor.institutionCAROLINA VIANNA MORGANTE, CPATSA / Cenargen.eng
Aparece nas coleções:Artigo em periódico indexado (CPATSA)

Arquivos associados a este item:
Arquivo TamanhoFormato 
Ferns-and-Lycophytes-as-new-challenges-physiological-and-biochemical-changes-in-desiccation-and-rehydration-cycles-of-Selaginella-convoluta.pdf1,17 MBAdobe PDFVisualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace