期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 69, 期 3, 页码 619-631出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erx423
关键词
Developmental transition; flowering; gibberellic acid; mineral nutrition; nitrate; nitrate transporter 1.1; Schlafmutze; Schnarchzapfen
资金
- Howard Hughes Medical Institute
- Fondo de Desarrollo de Areas Prioritarias (FONDAP) Center for Genome Regulation [15090007]
- Millennium Nucleus Center for Plant Systems and Synthetic Biology [NC130030]
- Fondo Nacional de Desarrollo Cientifico y Tecnologico (FONDECYT) [1141097, 11110083, 11121225]
- Spanish Ministry of Economy and Competitiveness [BIO2013-43184-P]
- Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA) [RTA2015-00014-c02-01]
- Internationalization Program PUC [PUC1566]
- INIA pre-doctoral fellowship
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.
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