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Microbial communities under distinct thermal and geochemical regimes in axial and off-axis sediments of Guaymas Basin
Authors
Jeffrey P. Chanton
Dirk de Beer
+11 more
Daniel Hoer
Samantha B. Joye
Daniel Lizarralde
Barbara J. MacGregor
S. Emil Ruff
Matthew A. Saxton
S. Adam Soule
Andreas P. Teske
Gunter Wegener
Dylan White
Guangchao Zhuang
Publication date
1 January 2021
Publisher
'Frontiers Media SA'
Doi
Cite
Abstract
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Teske, A., Wegener, G., Chanton, J. P., White, D., MacGregor, B., Hoer, D., de Beer, D., Zhuang, G., Saxton, M. A., Joye, S. B., Lizarralde, D., Soule, S. A., & Ruff, S. E. Microbial communities under distinct thermal and geochemical regimes in axial and off-axis sediments of Guaymas Basin. Frontiers in Microbiology, 12, (2021): 633649, https://doi.org/10.3389/fmicb.2021.633649.Cold seeps and hydrothermal vents are seafloor habitats fueled by subsurface energy sources. Both habitat types coexist in Guaymas Basin in the Gulf of California, providing an opportunity to compare microbial communities with distinct physiologies adapted to different thermal regimes. Hydrothermally active sites in the southern Guaymas Basin axial valley, and cold seep sites at Octopus Mound, a carbonate mound with abundant methanotrophic cold seep fauna at the Central Seep location on the northern off-axis flanking regions, show consistent geochemical and microbial differences between hot, temperate, cold seep, and background sites. The changing microbial actors include autotrophic and heterotrophic bacterial and archaeal lineages that catalyze sulfur, nitrogen, and methane cycling, organic matter degradation, and hydrocarbon oxidation. Thermal, biogeochemical, and microbiological characteristics of the sampling locations indicate that sediment thermal regime and seep-derived or hydrothermal energy sources structure the microbial communities at the sediment surface.Research on Guaymas Basin in the Teske lab is supported by NSF Molecular and cellular Biology grant 1817381 “Collaborative Research: Next generation physiology: a systems-level understanding of microbes driving carbon cycling in marine sediments”. Sampling in Guaymas Basin was supported by collaborative NSF Biological Oceanography grants 1357238 and 1357360 “Collaborative Research: Microbial carbon cycling and its interaction with sulfur and nitrogen transformations in Guaymas Basin hydrothermal sediments” to AT and SJ, respectively. SER was supported by an AITF/Eyes High Postdoctoral Fellowship and start-up funds provided by the Marine Biological Laboratory
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