窒素関連代謝と成長の転写調節
Allison Gaudinier1, Joel Rodriguez-Medina1, Lifang Zhang2
1Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA.
Nature
|October 26, 2018
まとめ
植物の窒素代謝を理解することは 収穫量を増やし 肥料の浪費を減らすための鍵です この研究は,植物構造と窒素使用効率を制御する21の転写因子のネットワークを明らかにしています.
科学分野:
- 植物生物学
- 分子生物学
- 農業科学
背景:
- 窒素は植物の成長と農業の生産性にとって不可欠です
- 過剰な窒素肥料の使用は 栄養失調などの環境問題を引き起こします
- 持続可能な農業には,窒素の使用効率の向上が不可欠です.
研究 の 目的:
- 植物が窒素に反応する重要な転写因子とネットワークを特定する.
- これらの要素が root と shoot のアーキテクチャにどのように影響するかを理解する.
- 植物における窒素代謝の調節メカニズムを明らかにする.
主な方法:
- トランスクリプション規制ネットワークの構築
- 窒素反応に関与する21の転写因子の特定
- 遺伝子調節を研究する 遺伝的混乱実験
- 転写変異とフィードバックループの分析
主要な成果:
- 窒素代謝を制御する新しい転写制御ネットワークが解明された.
- 21の転写因子は,異なる窒素濃度下での植物構造の調節因子として特定された.
- 遺伝子操作により,窒素代謝酵素の調整が確認されました.
- 転写レギュレータを含むフィードバックメカニズムが観察されました.
結論:
- 特定されたネットワークと転写因子は,植物用窒素の使用効率を高めるための重要な目標を提供します.
- この研究は,農業の生産性を持続的に高めるための戦略を開発するための基盤を提供します.
- これらの規制メカニズムの理解は 肥料の過剰使用による環境への影響を軽減するのに役立ちます
関連する概念動画
02:23Master Transcription Regulators
7.8K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.8K
02:23Master Transcription Regulators
2.8K
2.8K
01:20Overview of Nitrogen Metabolism
11.4K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
11.4K
02:13Cooperative Binding of Transcription Regulators
7.4K
Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
7.4K
02:13Cooperative Binding of Transcription Regulators
2.6K
2.6K
01:19Regulation of Metabolism
11.6K
Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
11.6K