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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Main Authors: Dayu Zou, Hongbin Liu, Meng Li
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-08-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fmicb.2020.02060/full
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author Dayu Zou
Dayu Zou
Dayu Zou
Hongbin Liu
Hongbin Liu
Meng Li
Meng Li
author_facet Dayu Zou
Dayu Zou
Dayu Zou
Hongbin Liu
Hongbin Liu
Meng Li
Meng Li
author_sort Dayu Zou
collection DOAJ
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 doaj.art-111cecba3f634e43bf330bd26246d8e62022-12-21T19:01:01ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2020-08-011110.3389/fmicb.2020.02060562342Community, Distribution, and Ecological Roles of Estuarine ArchaeaDayu Zou0Dayu Zou1Dayu Zou2Hongbin Liu3Hongbin Liu4Meng Li5Meng Li6SZU-HKUST Joint Ph.D. Program in Marine Environmental Science, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, ChinaDepartment of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, ChinaDepartment of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, ChinaHong Kong Branch of Southern Marine Science & Engineering Guangdong Laboratory, The Hong Kong University of Science and Technology, Hong Kong, ChinaSZU-HKUST Joint Ph.D. Program in Marine Environmental Science, Shenzhen University, Shenzhen, ChinaShenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, ChinaArchaea 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.https://www.frontiersin.org/article/10.3389/fmicb.2020.02060/fullThaumarchaeotaBathyarchaeotaestuarine archaeadistributionenvironmental adaptation
spellingShingle Dayu Zou
Dayu Zou
Dayu Zou
Hongbin Liu
Hongbin Liu
Meng Li
Meng Li
Community, Distribution, and Ecological Roles of Estuarine Archaea
Frontiers in Microbiology
Thaumarchaeota
Bathyarchaeota
estuarine archaea
distribution
environmental adaptation
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 Thaumarchaeota
Bathyarchaeota
estuarine archaea
distribution
environmental adaptation
url https://www.frontiersin.org/article/10.3389/fmicb.2020.02060/full
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