22 December 2017

SMZ/SNZ and gibberellin signaling are required for nitrate-elicited delay of flowering time in Arabidopsis thaliana.

DOI : 10.1093/jxb/erx423

Elena Vidal, PhD.

The reproductive success of plants largely depends on the correct programming of

developmental phase transitions, particularly the shift from vegetative to

reproductive growth. The timing of this transition is finely regulated by the

integration of an array of environmental and endogenous factors. Nitrogen is the

mineral macronutrient that plants require in the largest amount, and as such its

availability greatly impacts on many aspects of plant growth and development,

including flowering time. We found that nitrate signaling interacts with the

age-related and gibberellic acid pathways to control flowering time in

Arabidopsis thaliana. We revealed that repressors of flowering time belonging to

the AP2-type transcription factor family including SCHLAFMUTZE (SMZ) and

SCHNARCHZAPFEN (SNZ) are important regulators of flowering time in response to

nitrate. Our results support a model whereby nitrate activates SMZ and SNZ via

the gibberellin pathway to repress flowering time in Arabidopsis thaliana.

Participating Center Researchers

Plant Genomics and Systems Biology Laboratory (PlantomicsLab)

PhD in Biological Sciences, Molecular Genetics and Microbiology, Pontificia Universidad Católica de Chile.



Corporate building, first underground - Campus Huechuraba - Camino La Pirámide 5750, Huechuraba
+56 2 2328 1323|cgbum@umayor.cl