Non-Methane Hydrocarbon Emissions from Plants

小行星9633285 植物是大气中非甲烷碳氢化合物的重要来源，但影响陆地植被这些化学排放的生物化学和生理因素尚未得到很好的了解。 本项目调查了美国黄松和其他松树物种中2-甲基-3-丁烯-2-醇（甲基丁烯醇）的产生和排放。 甲基丁烯醇是一种在松林中测得的痕量大气成分，被归类为氧化烃（oxHCs）。 oxHCs被假设为一个潜在的重要的化合物组，这是重要的地球的行星bouquet层和自由对流层的整体光化学。 除了研究松树种生产甲基丁醇的生物化学机制外，该项目还试图确定这种化合物与针叶树合成的其他类异戊二烯化学品的酶促形成之间的关系。 该项目的结果将提供对生物学的更好理解。 以及调节天然oxHC向大气排放的环境因素。 这些知识对于开发预测算法和模型是必要的，这些算法和模型将估计oxHCs响应环境条件和植物代谢季节性变化的通量。 ***

9633285 Fall Plants are a significant source of non-methane hydrocarbons to the atmosphere, yet the biochemical and physiological factors that influence these chemical emissions from terrestrial vegetation are not well understood. This project investigates the production and emission of 2-methyl-3-buten-2-ol (methylbutenol) in ponderosa pine and other pine species. Methylbutenol is a trace atmospheric constituent that has been measured in pine forests and is classified as an oxygenated hydrocarbons (oxHCs). The oxHCs are hypothesized as a potentially significant group of compounds that is important in the overall photochemistry of the Earth s planetary boudary layer and free troposphere. In addition to study of the biochemical mechanism of methylbutanol production in pine species, the project seeks to establish the relationship of this compound to the enzymatic formation of other isoprenoid chemicals synthesized by conifers. Results from the project will provide improved understanding of the biological and environmental factors that regulate the emission of natural oxHC to the atmosphere. This knowledge is necessary for developing predictive algorithms and models that will estimate fluxes of oxHCs in response to environmental conditions and to seasonal changes in plant metabolism. ***