| 项目编号: | 1354972
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| 项目名称: | The potential for climate-induced disruption of plant-microbe symbioses along altitudinal gradients |
| 作者: | Jennifer Rudgers
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| 承担单位: | University of New Mexico
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| 批准年: | 2013
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| 开始日期: | 2014-06-01
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| 结束日期: | 2018-05-31
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| 资助金额: | USD829238
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| 资助来源: | US-NSF
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| 项目类别: | Continuing 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: | Biological Sciences - Environmental Biology
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| 英文关键词: | plant
; carbon cycling
; potential
; climate change
; fungal symbiont
; plant-fungal symbiosis
; altitudinal gradient
; symbiosis workshop
; symbiosis decoupling
; elevation gradient
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| 英文摘要: | Species are moving up mountainsides as temperatures rise. As ranges move to higher altitudes, important interactions between species may be disrupted, with as yet unknown consequences. The coupled dynamics arising from species interactions can produce complex and unanticipated ecological responses to climate change. Novel species responses may feed back on the rate of climate change itself by altering processes that influence carbon cycling.
Fungal symbionts of plants, such as endophytes and mycorrhizal fungi, are now well documented to influence the resilience of plants to climate change. Fungi also play critical roles in carbon cycling, by storing carbon in recalcitrant forms and decomposing organic material. Therefore, the potential for climate change to decouple plant and fungal interactions deserves careful attention. While plant movement under changing climates is easily observed, movement of fungal species is inconspicuous and little studied. This project will gauge the potential for plant-fungal symbioses to become destabilized under future climates and test the consequences of disruptions for individual plant species and carbon cycling.
This project has four major components. First, the distributions of fungal symbionts colonizing plant leaves and roots will be described along replicated elevation gradients in the Rocky Mountains of Colorado, using microscopy and DNA sequencing. This work constitutes the largest altitudinal survey of fungal symbionts anywhere in the world. Second, an NSF-funded, 22-year long warming experiment will be leveraged to test, for the first time, whether fungal responses to climate warming match their distributional patterns along natural, altitudinal gradients. Third, reciprocal transplants of plants and fungi will mimic range shifts under a 3°C warmer climate and experimentally test the consequences of symbiosis decoupling. Fourth, functional assays will evaluate how disrupted symbioses affect carbon cycling.
Broader Impacts: A majority of the budget is allocated to training the next generation of scientists, including students from underrepresented groups at the University of New Mexico, a majority-minority institution. K-12 outreach includes high school teacher training and curriculum development for under-served schools and symbiosis workshops in a kids nature camp and adult citizen science program supported through the Rocky Mountain Biological Laboratory. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96871
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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: | |
Jennifer Rudgers. The potential for climate-induced disruption of plant-microbe symbioses along altitudinal gradients. 2013-01-01.
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