氮气循环
转录因子
拟南芥
新陈代谢
转录调控
生物
基因
开枪
化学
生物化学
细胞生物学
氮气
农学
突变体
有机化学
作者
Allison Gaudinier,Joel Rodríguez-Medina,Lifang Zhang,Andrew Olson,Christophe Liseron-Monfils,Anne-Maarit Bågman,Jessica Foret,Shane Abbitt,Michelle Tang,Baohua Li,Daniel E. Runcie,Daniel J. Kliebenstein,Bo Shen,Mary J. Frank,Doreen Ware,Siobhán M. Brady
出处
期刊:Nature
[Springer Nature]
日期:2018-10-24
卷期号:563 (7730): 259-264
被引量:215
标识
DOI:10.1038/s41586-018-0656-3
摘要
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 revolution1. Ecologically, however, excessive application of fertilizer has disastrous effects such as eutrophication2. 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.
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