Eucalyptus urograndis physiological and hormonal changes under drought conditions in response to trinexapac-ethyl

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Western Pará (UFOPA)-
Autor(es): dc.contributorUniversity of Georgia (UGA)-
Autor(es): dc.contributorUniversitat Politècnica de València (UPV)-
Autor(es): dc.creatorBacha, Allan Lopes-
Autor(es): dc.creatorSantos, Renata Thaysa da Silva-
Autor(es): dc.creatorBraga, Andreísa Flores-
Autor(es): dc.creatorRodrigues, Juliana de Souza-
Autor(es): dc.creatorCarrega, Willians César-
Autor(es): dc.creatorBergua, Esther Carrera-
Autor(es): dc.creatorGrey, Timothy Lane-
Autor(es): dc.creatorAlves, Pedro Luís da Costa Aguiar-
Data de aceite: dc.date.accessioned2025-08-21T18:57:47Z-
Data de disponibilização: dc.date.available2025-08-21T18:57:47Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.envexpbot.2023.105628-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/297500-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/297500-
Descrição: dc.descriptionPrevious studies have reported that trinexapac-ethyl (TE) stimulates growth of well-watered (WW) eucalypt plants. However, the physiological and hormonal changes in response to this chemical remain unclear. Furthermore, there are reports that this chemical attenuates drought responses in grasses. This research investigated the hormonal and physiological response of Eucalyptus urograndis (Clone 1407) plants treated with TE, cultivated under WW and drought conditions. The experiment was carried out in a greenhouse up to 42 days after application of 0, 90 and 150 g ha−1 of TE. Eucalypt growth, hormone concentration, gas exchange, maximum quantum yield of photosystem II and total relative chlorophyll content were evaluated. TE increased growth of WW plants by up to 65%. Drought restricted the stimulatory effects of TE on eucalypt growth, despite an increase of at least 102% in gibberellin A4 (GA4), trans-zeatin (tZ) and N6-isopentenyladenine (iP) concentrations after application. GA4 stood out as an indicator of drought stress as it increased almost 6-fold compared to WW eucalypt. TE caused a hormonal imbalance in eucalypt up to 42 days after application, increasing GA1 concentration as a short-term effect (8 days) and GA8 as a medium-term effect (42 days). Gibberellin homeostasis was not reestablished until 42 days after TE treatment. These results provide insights into eucalypt hormonal response to TE. Future research should be conducted under field conditions to understand how long such positive effects would be detected over time in short-rotation eucalypt plantations.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSao Paulo State University (UNESP), Via de acesso Prof. Paulo Donato Castellane, s/n, SP-
Descrição: dc.descriptionFederal University of Western Pará (UFOPA), Rua Vereador José de Sousa Andrade, 98, PA-
Descrição: dc.descriptionUniversity of Georgia (UGA), 2360 Rainwater Rd-
Descrição: dc.descriptionUniversitat Politècnica de València (UPV), Ingeniero Fausto Elio, s/n-
Descrição: dc.descriptionSao Paulo State University (UNESP), Via de acesso Prof. Paulo Donato Castellane, s/n, SP-
Descrição: dc.descriptionFAPESP: 18/04376-9-
Descrição: dc.descriptionFAPESP: 19/13604-8-
Idioma: dc.languageen-
Relação: dc.relationEnvironmental and Experimental Botany-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAbiotic stress-
Palavras-chave: dc.subjectGas exchange-
Palavras-chave: dc.subjectGibberellins-
Palavras-chave: dc.subjectHormone crosstalk-
Palavras-chave: dc.subjectPlant growth regulator-
Palavras-chave: dc.subjectStimulatory effect-
Título: dc.titleEucalyptus urograndis physiological and hormonal changes under drought conditions in response to trinexapac-ethyl-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.