Stress-associated factors increase after desiccation of germinated seeds of Tabebuia impetiginosa Mart.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorVieira, Carlos Vinicio-
Autor(es): dc.creatorSilva, Edvaldo A. Amaral da-
Autor(es): dc.creatorAlvarenga, Amauri Alves de-
Autor(es): dc.creatorCastro, Evaristo Mauro de-
Autor(es): dc.creatorToorop, Peter E.-
Data de aceite: dc.date.accessioned2026-02-09T12:10:24Z-
Data de disponibilização: dc.date.available2026-02-09T12:10:24Z-
Data de envio: dc.date.issued2018-02-28-
Data de envio: dc.date.issued2018-02-28-
Data de envio: dc.date.issued2010-12-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/28735-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s10725-010-9496-3-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1155884-
Descrição: dc.descriptionImproved re-establishment of desiccation tolerance was studied in germinated seeds of Tabebuia impetiginosa Mart. by exposing to a polyethylene glycol solution prior to desiccation. The effects of different osmotic potentials and drying rates were studied. In addition, temporary temperature stress and exogenous abscisic acid were applied to evaluate their effect on desiccation tolerance of the protruded radicle. An osmotic potential of −1.7 MPa at 5°C followed by slow drying was most effective in the re-establishment of desiccation tolerance in protruded radicles with a length up to 3 mm. An osmotic potential of −1.4 or −2.0 MPa was less effective. Fast drying completely prevented the re-induction of desiccation tolerance. Cold shock or heat shock prior to osmotic treatment as well as abscisic acid added to the osmotic solution improved desiccation tolerance of protruded radicles. Surprisingly, survival of the germinated seed did not depend on re-establishment of desiccation tolerance in the protruded radicle. Even after the protruded radicle became necrotic and died, the production of adventitious roots from the hypocotyls allowed for survival and the development of high quality seedlings. Thus, T. impetiginosa appeared to be well adapted to the seasonally dry biome in which the species thrives via mechanisms that offer protection against desiccation in the young seedling stage.-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourcePlant Growth Regulation-
Palavras-chave: dc.subjectAbscisic acid-
Palavras-chave: dc.subjectCold shock-
Palavras-chave: dc.subjectDesiccation tolerance-
Palavras-chave: dc.subjectGerminated seed-
Palavras-chave: dc.subjectHeat shock-
Palavras-chave: dc.subjectOsmotic stress-
Título: dc.titleStress-associated factors increase after desiccation of germinated seeds of Tabebuia impetiginosa Mart.-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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