Dissertation Research: Multiple Carbon Sources for Isoprene Pproduction

论文研究：异戊二烯生产的多种碳源

• 批准号: 0206071
• 负责人: Manuel Lerdau
• 金额: $ 0.55万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-01 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206071&HistoricalAwards=false
• 关键词: Dissertation; Research; Multiple; Carbon; Sources

Title: Multiple Carbon Sources for Isoprene ProductionInvestigators: Manuel T. Lerdau and Jennifer L. FunkIsoprene (2-methyl 1,3-butadiene) is the most abundant volatile organic compound emitted from many temperate and tropical forests. The production of isoprene in plants has important implications for both plant metabolism and the chemistry of the lower atmosphere. Predicting patterns of isoprene emission from individual plants, forest canopies and larger regions involves the integration of regulatory factors operating on both short- and long-time scales. While the regulation of isoprene production on very short-time scales is dominated by changes in light and temperature, our knowledge of the mechanisms by which physiological and environmental factors regulate isoprene emission over larger temporal and spatial scales is limited. It is believed that the carbon used in isoprene production is derived primarily from recently assimilated precursors via photosynthesis. However, it has been proposed that stored carbon (carbohydrate) can contribute to isoprene production when low photosynthetic rates limit the supply of recently assimilated precursors. This research will examine the importance of stored carbon in isoprene production. This will be accomplished by (1) exploring the role of stored carbon in isoprene production and its importance under specific environmental conditions and (2) evaluating existing leaf-level models based on these findings. Understanding the role of stored carbon in isoprene production will help to elucidate the fundamental environmental physiology of isoprene production and improve efforts to model emission to the atmosphere.

标题：异戊二烯生产的多个碳源：Manuel T. Lerdau和Jennifer L. Funkisoprene（2-甲基1,3-丁二烯）是从许多温带和热带森林中发出的最丰富的挥发性有机化合物。植物中异戊二烯的产生对植物代谢和较低大气的化学都具有重要意义。预测各个植物，森林檐篷和较大区域的异戊二烯排放的模式涉及在短期和长时间尺度上运行的调节因素的整合。尽管在非常短时的尺度上对异戊二烯产生的调节主要取决于光和温度的变化，但我们对生理和环境因素调节较大的时间和空间尺度上异戊二烯排放的机制的了解。 据认为，异戊二烯生产中使用的碳主要来自最近通过光合作用的近来同化的前体。但是，已经提出，当低光合速率限制了最近同化的前体的供应时，储存的碳（碳水化合物）可以导致异戊二烯产生。这项研究将研究储存碳在异戊二烯生产中的重要性。这将通过（1）探索储存碳在异戊二烯生产中的作用及其在特定环境条件下的重要性以及（2）根据这些发现评估现有的叶片级模型。了解储存的碳在异戊二烯生产中的作用将有助于阐明异戊二烯生产的基本环境生理学，并改善为大气排放的努力。