CGB - Universidad Mayor

22 diciembre 2017

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

DOI : 10.1093/jxb/erx423

Dra. Elena A. Vidal

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.

Investigadores Participantes del Centro


Doctora en Ciencias Biológicas, mención Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile.



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