Atmospheric carbon fixation: a novel microbial process in Antarctic soils

大气碳固定：南极土壤中的一种新的微生物过程

• 批准号: FT170100341
• 负责人: Prof Belinda Ferrari
• 金额: $ 64.71万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-12-31 至 2023-07-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT170100341
• 关键词: Atmospheric; carbon; fixation; novel; microbial

This project aims to challenge our global understanding of carbon fixation. In most ecosystems, phototrophy supports higher-trophic life, yet no genetic evidence for photosynthesis exists in Antarctic desert soils. The project will determine the significance of atmospheric chemotrophy, a microbial driven process based on the consumption of atmospheric gases that it is proposed supports energy maintenance and biomass assimilation in nutrient-starved Antarctic desert soils. Additionally, the project will establish if these processes are structuring soil microbial communities, particularly in response to climate change. The expected project outcome is knowledge of primary production at the nutritional limits of life. This should provide significant benefit, such as a shift in our knowledge of the biological sciences as a new minimalistic mode of primary production.

该项目旨在挑战我们对碳固定的全球理解。在大多数生态系统中，光养支持高营养生命，但在南极沙漠土壤中没有光合作用的遗传证据。该项目将确定大气化学营养的重要性，这是一个基于消耗大气气体的微生物驱动的过程，它被提议支持营养匮乏的南极沙漠土壤中的能量维持和生物量同化。此外，该项目将确定这些过程是否正在构建土壤微生物群落，特别是在应对气候变化时。项目的预期成果是了解生命营养极限下的初级生产。这将带来巨大的好处，例如我们对生物科学的认识发生转变，成为一种新的初级生产的最低模式。