Modular Transcriptional Coordination of Central Metabolism

中枢代谢的模块化转录协调

• 批准号: 1330337
• 负责人: Daniel Kliebenstein
• 金额: $ 107.48万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1330337&HistoricalAwards=false
• 关键词: Modular; Transcriptional; Coordination; Central; Metabolism

Primary metabolism functions to provide the energy and building blocks for life and reproduction. Even with this central role, very little is known about how primary metabolism is regulated, especially at the level of gene expression. This project will employ a systematic approach to develop models of how this regulation occurs. A series of experimental strategies is expected to identify a set of key regulatory modules that are predicted to be central for the control of primary metabolism. Mutants of select transcription factors will be used to assess the phenotypic consequences using a high-throughput platform. Physiological, metabolomic and transcriptional effects will be monitored to assess module function. The combined data generated will enable further experimental studies to test whether regulatory modules of primary metabolism are structured around specific biochemical networks, or whether they are structured around physiological outputs such as increased growth or yield.Intellectual Merit: Modern biology has a fundamental desire to understand how the genome of an organism programs its phenotype. However, this is greatly complicated by the need to move from the molecular to the macroscopic scale. It requires critical information of how transcriptional regulation and primary metabolism are interconnected and how regulatory modules connect at the molecular and physiological scales. Current biochemical and systems dogma says that gene regulation is structured around biosynthetic pathways; however this project will directly test an alternative hypothesis that modules have a more interconnected structure built around the physiological endpoints. Finally, this project will begin to develop a predictive model of how the genome governs the dynamics of primary metabolism.Broader Impacts: A better understanding of how primary metabolism is regulated enables downstream manipulation of the process to engineer improvements in crop yield or quality. The project will provide interdisciplinary research opportunities for high school, undergraduate, and graduate students to prepare them for future careers in industry or academia. Established outreach programs will be used to recruit minority students from local high schools and colleges throughout the USA for summer internships. In addition, the principal investigators will be involved in teaching, both in a university classroom setting and in ongoing outreach efforts to educate community members about plant metabolism, quantitative genetics and ecology.

初级新陈代谢功能是为生命和生殖提供能量和积木。即使有这种核心作用，人们对初级新陈代谢是如何调节的也知之甚少，特别是在基因表达水平上。这个项目将采用一种系统的方法来开发这种监管如何发生的模型。预计一系列实验策略将确定一组关键的调控模块，预计这些模块将对初级新陈代谢的控制起核心作用。选择转录因子的突变体将使用高通量平台来评估表型后果。将监测生理、代谢和转录影响，以评估模块功能。生成的组合数据将使进一步的实验研究能够测试初级新陈代谢的调节模块是围绕特定的生化网络构建的，还是围绕生理输出(如增加生长或产量)构建的。智力优势：现代生物学有一种基本愿望，即了解生物体的基因组如何规划其表型。然而，由于需要从分子尺度转移到宏观尺度，这一点变得非常复杂。它需要关于转录调控和初级新陈代谢如何相互联系以及调控模块如何在分子和生理水平上连接的关键信息。目前的生化和系统教条说，基因调控是围绕生物合成途径构建的；然而，这个项目将直接测试另一种假设，即模块有一个围绕生理端点建立的更相互关联的结构。最后，该项目将开始开发基因组如何控制初级新陈代谢动力学的预测模型。广泛的影响：更好地了解初级新陈代谢是如何调节的，能够对这一过程进行下游操作，以促进作物产量或质量的提高。该项目将为高中、本科生和研究生提供跨学科的研究机会，为他们未来在工业或学术界的职业生涯做好准备。已建立的外展计划将用于从美国各地的当地高中和大学招募少数族裔学生参加暑期实习。此外，首席调查人员将参与大学课堂教学和正在进行的外展工作，以教育社区成员植物新陈代谢、数量遗传学和生态学。