Hot Spring Microbial Community Elemental Composition: Hot Spring and Soil Inputs, and the Transition from Biocumulus to Siliceous Sinter

Havig, J. R.; Kuether, Joshua E.; Gangidine, Andrew; Schroeder, Sarah; Hamilton, Trinity L.

doi:10.1089/ast.2019.2086

Cited by 11 publications

(8 citation statements)

References 57 publications

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“…Nitrate was detectable in both samples (14.3 µM), while ammonium was below detection limit in 18WCA1 and 6.0 µM in 18WCA2 (Supplementary File 1). Micromolar concentrations of nitrate and/or ammonia have been previously reported LGB springs (Havig et al, 2021;Holloway et al, 2011), and thus we expect 2017 samples would have had similar concentrations. It is possible that unmeasured parameters and/or biogeography are primary predictors of the characteristic extremely thermophilic green filaments in these springs.…”

Section: (Fig 1 Tablementioning

confidence: 70%

Distribution and genomic variation of thermophilic cyanobacteria in diverse microbial mats at the upper temperature limits of photosynthesis

Kees

Murugapiran

Bennett

et al. 2022

Preprint

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Thermophilic cyanobacteria have been extensively studied in Yellowstone National Park (YNP) hot springs, particularly from decades of work on the thick laminated mats of Octopus and Mushroom Springs. However, focused studies of cyanobacteria outside of these two hot springs have been lacking, especially regarding how physical and chemical parameters along with community morphology influence the genomic makeup of these organisms. Here, we used a metagenomic approach to examine cyanobacteria existing at the upper temperature limits of photosynthesis. We examined 15 alkaline hot spring samples across six geographic areas of YNP, all with varying physical and chemical parameters, and community morphology. We recovered 22 metagenome-assembled genomes (MAGs) belonging to thermophilic cyanobacteria, notably an uncultured Synechococcus-like taxon recovered from the upper temperature limit of photosynthesis, 73°C, in addition to thermophilic Gloeomargarita. Furthermore, we found that three distinct groups of Synechococcus-like MAGs recovered from different temperature ranges vary in their genomic makeup. MAGs from the uncultured very high temperature (up to 73°C) Synechococcus-like taxon lack key nitrogen metabolism genes and have genes implicated in cellular stress responses that diverge from other Synechococcus-like MAGs. Across all parameters measured, temperature was the primary determinant of taxonomic makeup of recovered cyanobacterial MAGs. However, Fe, community morphology, and biogeography played an additional role in the distribution and abundance of upper temperature limit-adapted Synechococcus-like MAGs.These findings expand our understanding of cyanobacterial diversity in YNP and provide a basis for interrogation of understudied thermophilic cyanobacteria.

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Section: (Fig 1 Tablementioning

confidence: 70%

Distribution and genomic variation of thermophilic cyanobacteria in diverse microbial mats at the upper temperature limits of photosynthesis

Kees

Murugapiran

Bennett

et al. 2022

Preprint

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“…Nitrate was detectable in both samples (14.3 μM), while ammonium was below detection limit in 18WCA1 and 6.0 μM in 18WCA2 ( Data Set S1 ). Micromolar concentrations of nitrate and/or ammonia have been previously reported in Lower Geyser Basin springs ( 31 , 32 ), and thus we expect that 2017 samples would have had similar concentrations. It is possible that unmeasured parameters and/or biogeography are primary predictors of the characteristic extremely thermophilic green filaments in these springs.…”

Section: Resultsmentioning

confidence: 69%

Distribution and Genomic Variation of Thermophilic Cyanobacteria in Diverse Microbial Mats at the Upper Temperature Limits of Photosynthesis

et al. 2022

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“…For the ∼500 geysing hot springs in YNP ( 9 , 10 ), eruption periodicities range from regular (e.g., Old Faithful is ∼91 to 93 min) to chaotic (e.g., Steamboat Geyser can vary from 3 days to 50 years [ 11 ]). Here, we examined phototrophic community composition coupled to rates of light-dependent C assimilation (via 13 C-labeled bicarbonate microcosms) in the outflow channels of two eruptive hot springs with similar geochemical profiles ( 12 ) (see Table S1 in the supplemental material): Flat Cone (FC) and an unnamed feature we colloquially named “The Jolly Jelly” (JJ; YNP Thermal Feature Inventory ID LFMNN010) in LGB, YNP ( Fig. 1 ; Fig.…”

Section: Observationmentioning

confidence: 99%

Meet Me in the Middle: Median Temperatures Impact Cyanobacteria and Photoautotrophy in Eruptive Yellowstone Hot Springs

Hamilton

Havig

2022

mSystems

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Hot Spring Microbial Community Elemental Composition: Hot Spring and Soil Inputs, and the Transition from Biocumulus to Siliceous Sinter

Cited by 11 publications

References 57 publications

Distribution and genomic variation of thermophilic cyanobacteria in diverse microbial mats at the upper temperature limits of photosynthesis

Distribution and genomic variation of thermophilic cyanobacteria in diverse microbial mats at the upper temperature limits of photosynthesis

Distribution and Genomic Variation of Thermophilic Cyanobacteria in Diverse Microbial Mats at the Upper Temperature Limits of Photosynthesis

Meet Me in the Middle: Median Temperatures Impact Cyanobacteria and Photoautotrophy in Eruptive Yellowstone Hot Springs

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