Analysis of the Vernalization Regulatory Network in the Model Grass Brachypodium distachyon

模型草二穗短柄草春化调控网络分析

• 批准号: 1258126
• 负责人: Richard Amasino
• 金额: $ 66.41万
• 依托单位: University of Wisconsin-Madison
• 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 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258126&HistoricalAwards=false
• 关键词: Analysis; Vernalization; Regulatory; Network; Model

The timing of flowering is critical for plant survival, and in agricultural settings proper timing of flowering is critical for maximal yield. In many plant species, flowering occurs at a particular time of year in response to the sensing of seasonal cues such as changes in the length of day and temperature. This project is designed to further our understanding of how the timing of flowering is regulated by environmental cues at a molecular level in the grasses. Despite the fact that grasses include important food crops such as wheat, rice and corn and potential bioenergy crops such as switchgrass, sorghum and miscanthus, little is known about how flowering is regulated at a molecular level in the grasses. This project will employ Brachypodium distachyon as a model because this grass species exhibits a large range of natural variation in flowering behavior that is genetically tractable, and it is straightforward to identify the genes responsible for genetic differences in flowering among different Brachypodium varieties. Understanding achieved by this project has the potential to inform research designed to improve the productivity of food and bioenergy crops. This project will result in the training of graduate students and postdocs for independent careers in science, and will provide undergraduates with an opportunity to learn about research in genetics, molecular biology and plant biology. Students and postdocs working on this project are also encouraged to contribute to our efforts to bring understanding of plant biology into K-12 classrooms.

开花的时间对于植物的存活是至关重要的，并且在农业环境中，适当的开花时间对于最大产量是至关重要的。在许多植物物种中，开花发生在一年中的特定时间，以响应对季节线索的感知，如白天和温度的变化。 该项目旨在进一步了解开花的时间是如何在分子水平上由环境因素调节的。尽管禾本科植物包括重要的粮食作物，如小麦、水稻和玉米，以及潜在的生物能源作物，如柳枝稷、高粱和芒草，但人们对禾本科植物在分子水平上如何调控开花知之甚少。该项目将采用Brachypodium distachyon作为模型，因为这种草物种在开花行为中表现出大范围的自然变异，这是遗传上易于处理的，并且可以直接识别不同Brachypodium品种之间开花遗传差异的基因。该项目所获得的理解有可能为旨在提高粮食和生物能源作物生产力的研究提供信息。 该项目将培养研究生和博士后从事独立的科学职业，并将为本科生提供学习遗传学、分子生物学和植物生物学研究的机会。 学生和博士后工作在这个项目也鼓励我们的努力作出贡献，使植物生物学的理解到K-12教室。