Journal Article

Transcriptional regulation of nitrogen-associated metabolism and growth

Gaudinier, Allison, Bågman, Anne-Maarit, Tang, Michelle, Runcie, Daniel E., Ware, Doreen, Abbitt, Shane, Zhang, Lifang, Foret, Jessica, Liseron-Monfils, Christophe, Li, Baohua, Frank, Mary J., Brady, Siobhan M., Olson, Andrew, Shen, Bo, Rodriguez-Medina, Joel, Kliebenstein, Daniel J.

2018

Overview

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. The yeast one-hybrid network for nitrogen-associated metabolism in Arabidopsis reveals the transcription factors that regulate the architecture of root and shoot systems under conditions of changing nitrogen availability.

• Publisher: Nature Publishing Group UK,Nature Publishing Group
• Subject: 49/22 / 49/39 / 49/47 / 49/90 / 49/91 / 631/449/1659 / 631/449/2491 / 631/449/2653 / Agricultural chemicals / Agricultural production / Agriculture - methods / Agriculture - trends / Alleles / Arabidopsis / Arabidopsis - genetics / Arabidopsis - growth & development / Arabidopsis - metabolism / Arabidopsis thaliana / Assimilation / Bioinformatics / Botanical research / Carbon / DNA binding proteins / Ecological effects / Enzymes / Eutrophication / Feedback, Physiological / Fertilizer application / Fertilizers / Gene expression / Gene Expression Regulation, Plant / Gene regulation / Genomics / Genotype / Genotype & phenotype / Green revolution / Humanities and Social Sciences / Hypotheses / Kinases / Letter / Metabolism / multidisciplinary / Mutation / Nitrates - metabolism / Nitrogen / Nitrogen - metabolism / Perturbation / Phenotype / Plant growth / Plant Roots - growth & development / Plant Roots - metabolism / Plant Shoots - growth & development / Plant Shoots - metabolism / Promoter Regions, Genetic - genetics / Science / Science (multidisciplinary) / Signal Transduction / Transcription (Genetics) / Transcription factors / Transcription Factors - genetics / Transcription Factors - metabolism / Transcription, Genetic / Two-Hybrid System Techniques