Prosiectau fesul blwyddyn
Crynodeb
Glaciers host ecosystems comprised of biodiverse and active microbiota. Among glacial ecosystems, less is known about the ecology of ice caps since most studies focus on valley glaciers or ice sheet margins. Previously we detailed the microbiota of one such high Arctic ice cap, focusing on cryoconite as a microbe-mineral aggregate formed by cyanobacteria. Here, we employ metabolomics at the scale of an entire ice cap to reveal the major metabolic pathways prevailing in the cryoconite of Foxfonna, central Svalbard. We reveal how geophysical and biotic processes influence the metabolomes of its resident cryoconite microbiota. We observed differences in amino acid, fatty acid, and nucleotide synthesis across the cap reflecting the influence of ice topography and the cyanobacteria within cryoconite. Ice topography influences central carbohydrate metabolism and nitrogen assimilation, whereas bacterial community structure governs lipid, nucleotide, and carotenoid biosynthesis processes. The prominence of polyamine metabolism and nitrogen assimilation highlights the importance of recycling nitrogenous nutrients. To our knowledge, this study represents the first application of metabolomics across an entire ice mass, demonstrating its utility as a tool for revealing the fundamental metabolic processes essential for sustaining life in supraglacial ecosystems experiencing profound change due to Arctic climate change-driven mass loss.
Iaith wreiddiol | Saesneg |
---|---|
Tudalennau (o-i) | 2549-2563 |
Nifer y tudalennau | 15 |
Cyfnodolyn | Environmental Microbiology |
Cyfrol | 25 |
Rhif cyhoeddi | 11 |
Dyddiad ar-lein cynnar | 24 Awst 2023 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 13 Tach 2023 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Icescape-scale metabolomics reveals cyanobacterial and topographic control of the core metabolism of the cryoconite ecosystem of an Arctic ice cap'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Setiau Data
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Metabolite profiles from Foxfonna, Svalbard
Edwards, A., Zenodo, 23 Chwef 2023
Dangosydd eitem ddigidol (DOI): 10.5281/zenodo.7669756, https://zenodo.org/record/7669756
Set ddata
Ffeil
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Are there perennial and light-independent microbial processes in superglacial ecosystems? IBERS (DGES 13745)
Edwards, A. (Prif Ymchwilydd)
Natural Environment Research Council
01 Hyd 2021 → 30 Meh 2025
Prosiect: Ymchwil a ariannwyd yn allanol
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Are there perennial and light-independent microbial processes in superglacial ecosystems? DGES (IBERS 13729)
Mitchell, A. (Prif Ymchwilydd)
Natural Environment Research Council
01 Hyd 2021 → 30 Medi 2024
Prosiect: Ymchwil a ariannwyd yn allanol
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How will glacial meltwater microbes come in from the cold in this 'Peak Melt' century - IBERS
Edwards, A. (Prif Ymchwilydd), Morphew, R. (Cyd-ymchwilydd) & Mur, L. (Cyd-ymchwilydd)
Natural Environment Research Council
01 Rhag 2018 → 31 Mai 2022
Prosiect: Ymchwil a ariannwyd yn allanol
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How will glacial meltwater microbes come in from the cold in this 'Peak Melt' century - DGES
Irvine-Fynn, T. (Prif Ymchwilydd), Mitchell, A. (Cyd-ymchwilydd), Cook, J. (Ymchwilydd) & Edwards Rassner, S. M. (Ymchwilydd)
Natural Environment Research Council
01 Rhag 2018 → 31 Mai 2022
Prosiect: Ymchwil a ariannwyd yn allanol