Research Starter Grant: Minority Postdoctoral Research Fellowships and Supporting Activities

研究启动补助金：少数族裔博士后研究奖学金和支持活动

• 批准号: 0434145
• 负责人: Kathleen Treseder
• 金额: $ 2.8万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-03-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0434145&HistoricalAwards=false
• 关键词: Research; Starter; Grant; Minority; Postdoctoral

AbstractDEB-0122445Although methyl halides catalyze atmospheric ozone depletion, a significant portion of their sources remains undescribed. Ectomycorrhizal fungi may account for much of the "missing" source. This research will test the hypothesis that anthropogenic nitrogen deposition will alter production of methyl halides by ectomycorrhizal fungi, because nitrogen additions frequently reduce ectomycorrhizal growth. Nitrogen experiments will be conducted at three scales: on laboratory-grown cultures, on excised root tips with fungi, and on undisturbed soils in the field. This research will lead to refinements in estimates of current global methyl halide production, and consideration of consequences of nitrogen deposition for future methyl halide emission.

尽管卤代甲烷催化大气臭氧消耗，但其来源的很大一部分仍未被描述。外生菌根真菌可能占大部分的“失踪”的来源。这项研究将测试的假设，人为的氮沉降将改变生产的甲基卤外生菌根真菌，因为氮添加经常减少外生菌根的生长。氮实验将在三个规模进行：实验室培养，离体根尖真菌，并在现场原状土壤。这项研究将导致目前全球卤代甲烷生产的估计，并考虑未来卤代甲烷排放的氮沉积的后果的改进。