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Ponencias en congresos:
New roles of zf1-3 transcription factors in the control of nitrogen assimilation and export during vegetative growth
Año:2018
Áreas de investigación
  • Ciencias biológicas
Datos
Descripción
Nitrogen is an essential macronutrient whose availability in soil is crucial for plant growth and crop productivity. Nitrate is the main source of inorganic nitrogen for land plants. However, it is usually limiting in the majority of the ecosystems, due to a variety of biotic and abiotic factors like microbial consumption, water leaching and soil erosion. Besides a macronutrient, nitrate is also a signal molecule that regulates the expression of a variety of genes that modulate many aspects of metabolism, growth and development. Here we identify the roles of ZF1 and ZF3, Arabidopsis DOF transcription factors in nitrate responses. Loss-of-function null mutant zf3-1 and zf1R exhibit nitrate-dependent root phenotypes, whereas ZF1 and ZF3 overexpression lines showed increased biomass and altered root architecture. Transcriptomic analyses of overexpressor lines indicated that both factors regulate the expression an important set of carbon and nitrogen regulated genes. Consistently, metabolite profiling disclosed that the total amount of key nitrogen metabolites including glutamate and glutamine were higher in ZF1/3-overexpressing plants in N-sufficient and limiting conditions. By contrast, zf3-1 and zf1R mutants exhibited lower amounts of those metabolites. In tomato, the overexpression of ZF1 and ZF3 genes modified amino acid and sugar content, improving biomass and yield. These results identify ZF1 and ZF3 as important regulatory factors of the nitrate response in Arabidopsis, suggesting that they are potential targets for improving nutrient use efficiency in crops.
Internacional
Si
Nombre congreso
XIV REUNIÓN DE BIOLOGÍA MOLECULAR DE PLANTAS
Tipo de participación
970
Lugar del congreso
Salamanca
Revisores
Si
ISBN o ISSN
0000-0000
DOI
Fecha inicio congreso
04/07/2018
Fecha fin congreso
06/07/2018
Desde la página
168
Hasta la página
168
Título de las actas
XIV REUNIÓN DE BIOLOGÍA MOLECULAR DE PLANTAS
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Jesus Vicente Carbajosa (UPM)
  • Autor: Joaquin Medina Alcazar (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Redes Reguladoras del Desarrollo y Respuesta a Estrés en Plantas
  • Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
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