AGS-PRF: Microbial Interactions with Carbonyl Sulfide (COS) - a Carbon Cycle Tracer

AGS-PRF：微生物与硫化碳 (COS) 的相互作用 - 碳循环示踪剂

• 批准号: 1331214
• 负责人: Laura Meredith
• 金额: $ 8.6万
• 依托单位: Meredith Laura K
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1331214&HistoricalAwards=false
• 关键词: AGS; PRF; Microbial; Interactions; Carbonyl

The focus of this work is on developing a better understanding of the biogeochemical cycle of the trace gas carbonyl sulfide (COS) in the atmosphere. The goal is to investigate the use of COS measurements as a proxy for gross primary productivity. COS and carbon dioxide are taken up at the same rate by the same plant photosynthetic enzymes and are coupled at the leaf scale via the key enzyme carbonic anhydrase (CA). The Principal Investigator will identify the class of CA involved in atmospheric COS consumption, determine the diversity of COS-consuming microorganisms in the soil, and identify the metabolic pathways associated with COS consumption.The use of COS as a tracer for the global carbon cycle has the potential to enable partitioning of large global carbon sources and sinks for the assessment of ecosystem carbon fluxes and process-level responses to climate forcing.

这项工作的重点是发展一个更好地了解微量气体羰基硫（COS）在大气中的地球化学循环。目标是调查使用COS测量作为总初级生产力的替代指标。COS和二氧化碳以相同的速率被相同的植物光合酶吸收，并通过关键酶碳酸酐酶（CA）在叶尺度上偶联。主要研究者将确定参与大气COS消耗的CA类别，确定土壤中消耗COS的微生物的多样性，并确定与COS消耗相关的代谢途径。使用COS作为全球碳循环的示踪剂，有可能划分全球大型碳源和碳汇，以评估生态系统碳通量和过程，对气候强迫的水平响应。

项目成果

Coupled Biological and Abiotic Mechanisms Driving Carbonyl Sulfide Production in Soils

• DOI: 10.3390/soilsystems2030037
• 发表时间: 2018-06
• 期刊: Soil Systems
• 影响因子: 3.5
• 作者: L. Meredith;K. Boye;Connor Z. Youngerman;M. Whelan;J. Ogée;J. Sauze;L. Wingate