Phenotypic and transcriptomic analysis reveals early stress responses in transgenic rice expressing Arabidopsis DREB1a

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorBerchembrock, Yasmin Vasques-
Autor(es): dc.creatorPathak, Bhuvan-
Autor(es): dc.creatorMaurya, Chandan-
Autor(es): dc.creatorBotelho, Flávia Barbosa Silva-
Autor(es): dc.creatorSrivastava, Vibha-
Data de aceite: dc.date.accessioned2026-02-09T12:24:20Z-
Data de disponibilização: dc.date.available2026-02-09T12:24:20Z-
Data de envio: dc.date.issued2023-12-04-
Data de envio: dc.date.issued2023-12-04-
Data de envio: dc.date.issued2022-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/58653-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1160641-
Descrição: dc.descriptionOverexpression of Arabidopsis dehydration response element binding 1a (DREB1a) is a well-known approach for developing salinity, cold and/or drought stress tolerance. However, understanding of the genetic mechanisms associated with DREB1a expression in rice is generally limited. In this study, DREB1a-associated early responses were investigated in a transgenic rice line harboring cold-inducible DREB1a at a gene stacked locus. Although the function of other genes in the stacked locus was not relevant to stress tolerance, this study demonstrates DREB1a can be co-localized with other genes for multigenic trait enhancement. As expected, the transgenic lines displayed improved tolerance to salinity stress and water withholding as compared with non-transgenic controls. RNA sequencing and transcriptome analysis showed upregulation of complex transcriptional networks and metabolic reprogramming as DREB1a expression led to the upregulation of multiple transcription factor gene families, suppression of photosynthesis, and induction of secondary metabolism. In addition to the detection of previously described mechanisms such as production of protective molecules, potentially novel pathways were also revealed. These include jasmonate, auxin, and ethylene signaling, induction of JAZ and WRKY regulons, trehalose synthesis, and polyamine catabolism. These genes regulate various stress responses and ensure timely attenuation of the stress signal. Furthermore, genes associated with heat stress response were downregulated in DREB1a expressing lines, suggesting antagonism between heat and dehydration stress response pathways. In summary, through a complex transcriptional network, multiple stress signaling pathways are induced by DREB1a that presumably lead to early perception and prompt response toward stress tolerance as well as attenuation of the stress signal to prevent deleterious effects of the runoff response.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherJohn Wiley & Sons / American Society of Plant Biologists and Society for Experimental Biology-
Direitos: dc.rightsAttribution 4.0 International-
Direitos: dc.rightsAttribution 4.0 International-
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.sourcePlant Direct-
Palavras-chave: dc.subjectAbiotic stress-
Palavras-chave: dc.subjectArabidopsis DREB1a-
Palavras-chave: dc.subjectDrought stress-
Palavras-chave: dc.subjectOryza sativa-
Palavras-chave: dc.subjectSalinity stress-
Palavras-chave: dc.subjectStress tolerance-
Palavras-chave: dc.subjectTranscriptome-
Palavras-chave: dc.subjectEstresse abiótico-
Palavras-chave: dc.subjectDéficit hídrico-
Palavras-chave: dc.subjectArroz - Tolerância ao estresse-
Palavras-chave: dc.subjectEstresse salino-
Palavras-chave: dc.subjectTranscriptoma-
Palavras-chave: dc.subjectArroz transgênico-
Título: dc.titlePhenotypic and transcriptomic analysis reveals early stress responses in transgenic rice expressing Arabidopsis DREB1a-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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