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Community, Distribution, and Ecological Roles of Estuarine Archaea

Archaea are diverse and ubiquitous prokaryotes present in both extreme and moderate environments. Estuaries, serving as links between the land and ocean, harbor numerous microbes that are relatively highly active because of massive terrigenous input of nutrients. Archaea account for a considerable p...

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Autores principales: Zou, Dayu, Liu, Hongbin, Li, Meng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7484942/
https://www.ncbi.nlm.nih.gov/pubmed/32983044
http://dx.doi.org/10.3389/fmicb.2020.02060
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author Zou, Dayu
Liu, Hongbin
Li, Meng
author_facet Zou, Dayu
Liu, Hongbin
Li, Meng
author_sort Zou, Dayu
collection PubMed
description Archaea are diverse and ubiquitous prokaryotes present in both extreme and moderate environments. Estuaries, serving as links between the land and ocean, harbor numerous microbes that are relatively highly active because of massive terrigenous input of nutrients. Archaea account for a considerable portion of the estuarine microbial community. They are diverse and play key roles in the estuarine biogeochemical cycles. Ammonia-oxidizing archaea (AOA) are an abundant aquatic archaeal group in estuaries, greatly contributing estuarine ammonia oxidation. Bathyarchaeota are abundant in sediments, and they may involve in sedimentary organic matter degradation, acetogenesis, and, potentially, methane metabolism, based on genomics. Other archaeal groups are also commonly detected in estuaries worldwide. They include Euryarchaeota, and members of the DPANN and Asgard archaea. Based on biodiversity surveys of the 16S rRNA gene and some functional genes, the distribution and abundance of estuarine archaea are driven by physicochemical factors, such as salinity and oxygen concentration. Currently, increasing amount of genomic information for estuarine archaea is becoming available because of the advances in sequencing technologies, especially for AOA and Bathyarchaeota, leading to a better understanding of their functions and environmental adaptations. Here, we summarized the current knowledge on the community composition and major archaeal groups in estuaries, focusing on AOA and Bathyarchaeota. We also highlighted the unique genomic features and potential adaptation strategies of estuarine archaea, pointing out major unknowns in the field and scope for future research.
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spelling pubmed-74849422020-09-24 Community, Distribution, and Ecological Roles of Estuarine Archaea Zou, Dayu Liu, Hongbin Li, Meng Front Microbiol Microbiology Archaea are diverse and ubiquitous prokaryotes present in both extreme and moderate environments. Estuaries, serving as links between the land and ocean, harbor numerous microbes that are relatively highly active because of massive terrigenous input of nutrients. Archaea account for a considerable portion of the estuarine microbial community. They are diverse and play key roles in the estuarine biogeochemical cycles. Ammonia-oxidizing archaea (AOA) are an abundant aquatic archaeal group in estuaries, greatly contributing estuarine ammonia oxidation. Bathyarchaeota are abundant in sediments, and they may involve in sedimentary organic matter degradation, acetogenesis, and, potentially, methane metabolism, based on genomics. Other archaeal groups are also commonly detected in estuaries worldwide. They include Euryarchaeota, and members of the DPANN and Asgard archaea. Based on biodiversity surveys of the 16S rRNA gene and some functional genes, the distribution and abundance of estuarine archaea are driven by physicochemical factors, such as salinity and oxygen concentration. Currently, increasing amount of genomic information for estuarine archaea is becoming available because of the advances in sequencing technologies, especially for AOA and Bathyarchaeota, leading to a better understanding of their functions and environmental adaptations. Here, we summarized the current knowledge on the community composition and major archaeal groups in estuaries, focusing on AOA and Bathyarchaeota. We also highlighted the unique genomic features and potential adaptation strategies of estuarine archaea, pointing out major unknowns in the field and scope for future research. Frontiers Media S.A. 2020-08-28 /pmc/articles/PMC7484942/ /pubmed/32983044 http://dx.doi.org/10.3389/fmicb.2020.02060 Text en Copyright © 2020 Zou, Liu and Li. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Zou, Dayu
Liu, Hongbin
Li, Meng
Community, Distribution, and Ecological Roles of Estuarine Archaea
title Community, Distribution, and Ecological Roles of Estuarine Archaea
title_full Community, Distribution, and Ecological Roles of Estuarine Archaea
title_fullStr Community, Distribution, and Ecological Roles of Estuarine Archaea
title_full_unstemmed Community, Distribution, and Ecological Roles of Estuarine Archaea
title_short Community, Distribution, and Ecological Roles of Estuarine Archaea
title_sort community, distribution, and ecological roles of estuarine archaea
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7484942/
https://www.ncbi.nlm.nih.gov/pubmed/32983044
http://dx.doi.org/10.3389/fmicb.2020.02060
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