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Abundance and distribution of Archaea in the subseafloor sedimentary biosphere

Subseafloor sedimentary environments harbor a remarkable number of microorganisms that constitute anaerobic and aerobic microbial ecosystems beneath the ocean margins and open-ocean gyres, respectively. Microbial biomass and diversity richness generally decrease with increasing sediment depth and bu...

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Autores principales: Hoshino, Tatsuhiko, Inagaki, Fumio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6298964/
https://www.ncbi.nlm.nih.gov/pubmed/30116037
http://dx.doi.org/10.1038/s41396-018-0253-3
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author Hoshino, Tatsuhiko
Inagaki, Fumio
author_facet Hoshino, Tatsuhiko
Inagaki, Fumio
author_sort Hoshino, Tatsuhiko
collection PubMed
description Subseafloor sedimentary environments harbor a remarkable number of microorganisms that constitute anaerobic and aerobic microbial ecosystems beneath the ocean margins and open-ocean gyres, respectively. Microbial biomass and diversity richness generally decrease with increasing sediment depth and burial time. However, there has been a long-standing debate over the contribution and distribution of Archaea in the subseafloor sedimentary biosphere. Here we show the global quantification of archaeal and bacterial 16S rRNA genes in 221 sediment core samples obtained from diverse oceanographic settings through scientific ocean drilling using microfluidic digital PCR. We estimated that archaeal cells constitute 37.3% of the total microbial cells (40.0% and 12.8% in the ocean margin and open-ocean sites, respectively), corresponding to 1.1 × 10(29) cells on Earth. In addition, the relative abundance of archaeal 16S rRNA genes generally decreased with the depth of water in the overlying sedimentary habitat, suggesting that Archaea may be more sensitive to nutrient quality and quantity supplied from the overlying ocean.
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spelling pubmed-62989642018-12-19 Abundance and distribution of Archaea in the subseafloor sedimentary biosphere Hoshino, Tatsuhiko Inagaki, Fumio ISME J Brief Communication Subseafloor sedimentary environments harbor a remarkable number of microorganisms that constitute anaerobic and aerobic microbial ecosystems beneath the ocean margins and open-ocean gyres, respectively. Microbial biomass and diversity richness generally decrease with increasing sediment depth and burial time. However, there has been a long-standing debate over the contribution and distribution of Archaea in the subseafloor sedimentary biosphere. Here we show the global quantification of archaeal and bacterial 16S rRNA genes in 221 sediment core samples obtained from diverse oceanographic settings through scientific ocean drilling using microfluidic digital PCR. We estimated that archaeal cells constitute 37.3% of the total microbial cells (40.0% and 12.8% in the ocean margin and open-ocean sites, respectively), corresponding to 1.1 × 10(29) cells on Earth. In addition, the relative abundance of archaeal 16S rRNA genes generally decreased with the depth of water in the overlying sedimentary habitat, suggesting that Archaea may be more sensitive to nutrient quality and quantity supplied from the overlying ocean. Nature Publishing Group UK 2018-08-16 2019-01 /pmc/articles/PMC6298964/ /pubmed/30116037 http://dx.doi.org/10.1038/s41396-018-0253-3 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Brief Communication
Hoshino, Tatsuhiko
Inagaki, Fumio
Abundance and distribution of Archaea in the subseafloor sedimentary biosphere
title Abundance and distribution of Archaea in the subseafloor sedimentary biosphere
title_full Abundance and distribution of Archaea in the subseafloor sedimentary biosphere
title_fullStr Abundance and distribution of Archaea in the subseafloor sedimentary biosphere
title_full_unstemmed Abundance and distribution of Archaea in the subseafloor sedimentary biosphere
title_short Abundance and distribution of Archaea in the subseafloor sedimentary biosphere
title_sort abundance and distribution of archaea in the subseafloor sedimentary biosphere
topic Brief Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6298964/
https://www.ncbi.nlm.nih.gov/pubmed/30116037
http://dx.doi.org/10.1038/s41396-018-0253-3
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