Characterization of tomato Cycling Dof Factors reveals conserved and new functions in the control of flowering time and abiotic stress responses.

Corrales Ducuara, Alba Rocio; Nebauer, Sergio G.; Carrillo Gil, Laura; Fernandez Nohales, Pedro; Marqués, Jorge; Renau Morata, Begoña; Granel, Antonio; Pollmann, Stephan; Vicente Carbajosa, Jesus; Molina, Rosa Victoria y Medina Alcazar, Joaquin (2013). Characterization of tomato Cycling Dof Factors reveals conserved and new functions in the control of flowering time and abiotic stress responses.. "Journal of Experimental Botany", v. 65 (n. 4); pp. 995-1012. ISSN 0022-0957. https://doi.org/10.1093/jxb/ert451.

Descripción

Título: Characterization of tomato Cycling Dof Factors reveals conserved and new functions in the control of flowering time and abiotic stress responses.
Autor/es:
  • Corrales Ducuara, Alba Rocio
  • Nebauer, Sergio G.
  • Carrillo Gil, Laura
  • Fernandez Nohales, Pedro
  • Marqués, Jorge
  • Renau Morata, Begoña
  • Granel, Antonio
  • Pollmann, Stephan
  • Vicente Carbajosa, Jesus
  • Molina, Rosa Victoria
  • Medina Alcazar, Joaquin
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Experimental Botany
Fecha: Enero 2013
Volumen: 65
Materias:
Escuela: Centro de Investigación en Biotecnología y Genómica de Plantas (CBGP) (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

DNA binding with One Finger (DOF) transcription factors are involved in multiple aspects of plant growth and development but their precise roles in abiotic stress tolerance are largely unknown. Here we report a group of five tomato DOF genes, homologous to Arabidopsis Cycling DOF Factors (CDFs), that function as transcriptional regulators involved in responses to drought and salt stress and flowering-time control in a gene-specific manner. SlCDF1?5 are nuclear proteins that display specific binding with different affinities to canonical DNA target sequences and present diverse transcriptional activation capacities in vivo. SlCDF1?5 genes exhibited distinct diurnal expression patterns and were differentially induced in response to osmotic, salt, heat, and low-temperature stresses. Arabidopsis plants overexpressing SlCDF1 or SlCDF3 showed increased drought and salt tolerance. In addition, the expression of various stress-responsive genes, such as COR15, RD29A, and RD10, were differentially activated in the overexpressing lines. Interestingly, overexpression in Arabidopsis of SlCDF3 but not SlCDF1 promotes late flowering through modulation of the expression of flowering control genes such as CO and FT. Overall, our data connect SlCDFs to undescribed functions related to abiotic stress tolerance and flowering time through the regulation of specific target genes and an increase in particular metabolites

Más información

ID de Registro: 29160
Identificador DC: http://oa.upm.es/29160/
Identificador OAI: oai:oa.upm.es:29160
Identificador DOI: 10.1093/jxb/ert451
URL Oficial: http://jxb.oxfordjournals.org/content/65/4/995.abstract
Depositado por: Memoria Investigacion
Depositado el: 29 Jul 2014 17:21
Ultima Modificación: 31 Mar 2015 22:56
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