Temporal dynamics in a red alga dominated geothermal feature in Yellowstone National Park

Stephens, Timothy G., Van Etten, Julia, McDermott, Timothy, Christian, William, Chaverra, Martha, Gurney, James, Lee, Yongsung, Kim, Hocheol, Cho, Chung Hyun, Chovancek, Erik, Westhoff, Philipp, Otte, Antonia, Northen, Trent R., Bowen, Benjamin P., Louie, Katherine B., Barry, Kerrie, Grigoriev, Igor V., Mock, Thomas, Liu, Shao-Lun, Miyagishima, Shin-Ya, Yoshinaga, Masafumi, Weber, Andreas P.M., Yoon, Hwan Su and Bhattacharya, Debashish (2024) Temporal dynamics in a red alga dominated geothermal feature in Yellowstone National Park. ISME Communications, 4 (1). ISSN 2730-6151

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Abstract

Alga-dominated geothermal spring communities in Yellowstone National Park (YNP), USA, have been the focus of many studies, however, relatively little is known about the composition and community interactions which underpin these ecosystems. Our goal was to determine, in three neighboring yet distinct environments in Lemonade Creek, YNP, how cells cope with abiotic stressors over the diurnal cycle. All three environments are colonized by two photosynthetic lineages, Cyanidioschyzon and Galdieria, both of which are extremophilic Cyanidiophyceae red algae. Cyanidioschyzon, a highly specialized obligate photoautotroph, dominated cell counts at all three Lemonade Creek environments. The cell cycle of Cyanidioschyzon in YNP matched that observed in synchronized cultures, suggesting that light availability plays a strong role in constraining growth of this alga in its natural habitat. Surprisingly, the mixotrophic and physiologically more flexible Galdieria, was a minor component of these algal populations. Arsenic detoxification at Lemonade Creek occurred via complementary gene expression by different eukaryotic and prokaryotic lineages, consistent with this function being shared by the microbial community, rather than individual lineages completing the entire pathway. These results demonstrate the highly structured nature of these extreme habitats, particularly regarding arsenic detoxification.

Item Type: Article
Additional Information: Publisher Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of the International Society for Microbial Ecology.
Uncontrolled Keywords: community interactions,cyanidiophyceae,extremophiles,hot springs,microbiome,multi-omics,yellowstone national park,microbiology ,/dk/atira/pure/subjectarea/asjc/2400/2404
Faculty \ School: Faculty of Science > School of Environmental Sciences
University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups: Faculty of Science > Research Groups > Environmental Biology
Faculty of Science > Research Centres > Centre for Ecology, Evolution and Conservation
Faculty of Science > Research Groups > Wolfson Centre for Advanced Environmental Microbiology
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
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Depositing User: LivePure Connector
Date Deposited: 26 Mar 2026 11:30
Last Modified: 27 Mar 2026 10:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/102593
DOI: 10.1093/ismeco/ycae151

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