Gene expression and genetic control to cold tolerance during maize seed germination

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSilva Neta, Izabel Costa-
Autor(es): dc.creatorVon Pinho, Édila Vilela de Resende-
Autor(es): dc.creatorAbreu, Viviane Maria de-
Autor(es): dc.creatorVilela, Danielle Rezende-
Autor(es): dc.creatorSantos, Milena Christy-
Autor(es): dc.creatorSantos, Heloisa Oliveira dos-
Autor(es): dc.creatorFerreira, Ricardo Augusto Diniz Cabral-
Autor(es): dc.creatorVon Pinho, Renzo Garcia-
Autor(es): dc.creatorVasconcellos, Renato Coelho de Castro-
Data de aceite: dc.date.accessioned2026-02-09T11:26:27Z-
Data de disponibilização: dc.date.available2026-02-09T11:26:27Z-
Data de envio: dc.date.issued2020-08-19-
Data de envio: dc.date.issued2020-08-19-
Data de envio: dc.date.issued2020-04-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/42488-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1140849-
Descrição: dc.descriptionBackground: The study of cold tolerance in maize seeds and seedlings through physiological quality assessments, as well as the genetic control associated with this trait, allows an early characterization of genotypes. Here we studied the genetic control for cold tolerance during the germination process in maize seeds and genes influenced by this stress. Results: Six maize lines were used, three classified as tolerant and three as susceptible to low germination temperature. A field was developed to produce the hybrid seeds, in a partial diallel scheme including the reciprocal crosses. For the expression analysis, seeds from two contrasting lines were used, as well as their hybrid combination and their reciprocal crosses, on dried and moistened seeds at 10 °C for 4 and 7 days. It was evaluated the catalase (CAT) and esterase (EST) enzymes, heat-resistant proteins and the genes Putative stearoyl-ACP desaturase (SAD), Ascorbate Peroxidase (APX), Superoxide Dismutase (SOD) and Mitogen Activated Protein Kinase (ZmMPK5). The estimated values ​​for heterosis, general and specific combining abilities and reciprocal maternal and non-maternal effects were carried out and it showed that there is heterosis for germination at low temperatures, also the non-additive genes were more important and there was a reciprocal effect. Conclusions: There is a greater expression of the CAT and EST enzymes in moistened seeds at seven days and there is less expression of heat-resistant proteins and the SAD gene at seven days of moistening. Also, there are variations in the expression of the APX, SOD and ZmMPK5 genes in dried and moistened seeds, as well as among the genotypes studied.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer Nature-
Direitos: dc.rightsacesso aberto-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
???dc.source???: dc.sourceBMC Plant Biology-
Palavras-chave: dc.subjectZea mays-
Palavras-chave: dc.subjectSeed vigor-
Palavras-chave: dc.subjectHeterosis-
Palavras-chave: dc.subjectMaternal effect-
Palavras-chave: dc.subjectMilho - Semente-
Palavras-chave: dc.subjectSemente - Vigor-
Palavras-chave: dc.subjectHeterose-
Palavras-chave: dc.subjectGenética - Efeito materno-
Título: dc.titleGene expression and genetic control to cold tolerance during maize seed germination-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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