| 项目编号: | 1512511
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| 项目名称: | UNS: Airborne Microbes as Mitigators of Greenhouse Gases |
| 作者: | Donna Fennell
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| 承担单位: | Rutgers University New Brunswick
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| 批准年: | 2014
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| 开始日期: | 2015-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | USD227573
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | atmosphere
; carbon dioxide
; methane
; airborne bacterium
; air
; natural airborne microbe
; greenhouse gas
; fennell
; microbes?this award
; gaseous growth substrate
; pi
; airborne ghg
; major greenhouse gas
; gas-phase bioreactor
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| 英文摘要: | 1512511 (Fennell)
Microorganisms in air are typically assumed to be inactive. Yet air contains microbial growth substrates, and microbes known to metabolize these substrates have been collected from the atmosphere. It is not known whether microbes in ambient air are capable of inducing biogeochemical change on a global scale, as they are in other Earth environments. In this research metabolic activity of bacteria exposed to gaseous growth substrates in natural air will be investigated. The mitigation of two of the major greenhouse gases (GHG), methane and carbon dioxide, by airborne bacteria will be investigated, as well as potential interventions to enhance the effect.
Microbial metabolism in air could be an important and modifiable sink for atmospheric contaminants including methane and carbon dioxide. Positive findings from this project could stimulate cross-disciplinary collaboration with atmospheric chemists and modelers to incorporate activity of natural airborne microbes into conceptual models and eventually quantitative models of atmospheric processes. Knowledge of microbial activity, metabolism and/or growth in the atmosphere would establish the atmosphere as part of the biosphere. This research expands upon a previous NSF project where the PIs developed rotating gas-phase bioreactors for aerial incubation of bacteria (Fennell, PI, Mainelis, co-PI; MCB-0606576) and where they have shown that airborne bacteria are active (Fennell, PI, Mainelis and Kerkhof coPIs; IOS-1022254). The hypotheses governing the continuing study are that active microorganisms in the atmosphere play a role in mitigation of greenhouse gases including methane and carbon dioxide and that this role could be enhanced by ecological engineering intervention. Specifically, this research will characterize methane and carbon dioxide biotransformation and uptake by airborne methanotrophic and phototrophic bacteria, respectively, under environmental conditions of light/dark and differing humidities and temperatures, addressing the question, what are the environmental factors that constrain activity of airborne GHG mitigating microbes?
This award is co-funded by the MCB Division of the BIO Directorate and the CBET/ENG Environmental Sustainability program under BIOMAPS. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94262
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Donna Fennell. UNS: Airborne Microbes as Mitigators of Greenhouse Gases. 2014-01-01.
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