Journal
NATURE
Volume 563, Issue 7730, Pages 259-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41586-018-0656-3
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Funding
- DuPont Pioneer
- Elsie Taylor Stocking Memorial Fellowship
- Katherine Esau Graduate Summer Fellowship
- University of California, Davis Dissertation Year Fellowship
- UC-MEXUS CONACYT PhD Fellowship
- HHMI Faculty Scholar Fellowship
- [NSF-MCB-1330337]
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Nitrogen is an essential macronutrient for plant growth and basic metabolic processes. The application of nitrogen-containing fertilizer increases yield, which has been a substantial factor in the green revolution(1). Ecologically, however, excessive application of fertilizer has disastrous effects such as eutrophication(2). A better understanding of how plants regulate nitrogen metabolism is critical to increase plant yield and reduce fertilizer overuse. Here we present a transcriptional regulatory network and twenty-one transcription factors that regulate the architecture of root and shoot systems in response to changes in nitrogen availability. Genetic perturbation of a subset of these transcription factors revealed coordinate transcriptional regulation of enzymes involved in nitrogen metabolism. Transcriptional regulators in the network are transcriptionally modified by feedback via genetic perturbation of nitrogen metabolism. The network, genes and gene-regulatory modules identified here will prove critical to increasing agricultural productivity.
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