Genomic Evidence for the Recycling of Complex Organic Carbon by Novel
            <i>Thermoplasmatota</i>
            Clades in Deep-Sea Sediments

Zheng, Pengfei; Wei, Zhanfei; Zhou, Yingli; Li, Qingmei; Zhao, Qi; Wang, Yong

doi:10.1128/msystems.00077-22

Cited by 12 publications

(4 citation statements)

References 105 publications

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“…In this study, the abundance of Thermoplasmatota increased under chlorinated hydrocarbon stress (Figure 3A), which has previously been reported to be related to the degradation of microplastics [50] and aromatics [51]. LEfSe analysis shows that Thermoplasmata, Methanomassiliicoccales, and Nitrosopumilaceae were enriched in the high concentration group (Figure 4A).…”

Section: Discussionsupporting

confidence: 79%

Structure and Assembly Mechanism of Archaeal Communities in Deep Soil Contaminated by Chlorinated Hydrocarbons

Fan

Liu

et al. 2023

Sustainability

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Chlorinated hydrocarbons are typical organic pollutants in contaminated sites, and microbial remediation technology has attracted more and more attention. To study the structural characteristics and assembly mechanism of the archaeal community in chlorinated hydrocarbon-contaminated soil, unsaturated-zone soil within 2~10 m was collected. Based on high-throughput sequencing technology, the archaeal community was analyzed, and the main drivers, environmental influencing factors, and assembly mechanisms were revealed. The results showed that chlorinated hydrocarbon pollution altered archaeal community structure. The archaeal community composition was significantly correlated with trichloroethylene (r = 0.49, p = 0.001), chloroform (r = 0.60, p = 0.001), pH (r = 0.27, p = 0.036), sulfate (r = 0.21, p = 0.032), and total carbon (r = 0.23, p = 0.041). Under pollution stress, the relative abundance of Thermoplasmatota increased to 25.61%. Deterministic processes increased in the heavily polluted soil, resulting in reduced species richness, while positive collaboration among surviving species increased to 100%. These results provide new insights into the organization of archaeal communities in chlorinated hydrocarbon-contaminated sites and provide a basis for remediation activities.

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Section: Discussionsupporting

confidence: 79%

Structure and Assembly Mechanism of Archaeal Communities in Deep Soil Contaminated by Chlorinated Hydrocarbons

Fan

Liu

et al. 2023

Sustainability

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“…However, samples from Prachuap Kiri Khan Province (NHH) showed Thermoplasmatota in high abundance rather than Bacteroidota. Thermoplasmatota is a novel group of archaea found primarily in surface seawater and is potentially involved with the ocean carbon cycle [ 32 ]. The result showed that Proteobacteria was negatively correlated to temperature.…”

Section: Discussionmentioning

confidence: 99%

Investigation of the marine bacterial community along the coastline of the Gulf of Thailand

Hinthong,

Srisook,

Tanyong

et al. 2024

Heliyon

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“…The sulfur oxidation capacity of SOB MAGs belonging to Bacteroidia , Marinisomatota , Chloroflexota, and Actinobacteriota was identified in other environments such as seafloor sulfide deposits, OMZs, groundwater, and geothermal environments ( 68 – 71 ). The archaeal MAG185 belongs to Thermoplasmatota and its potential sulfide-oxidizing capacity has been found in the novel Thermoplasmatota clade from deep-sea sediments ( 72 ). DsrEFH can act as an effective sulfur donor for DsrC to participate in the sulfur oxidation process, and genes encoding DsrEFH were annotated in several SOB MAGs ( 73 ).…”

Section: Discussionmentioning

confidence: 99%

Microbial communities related to the sulfur cycle in the Sansha Yongle Blue Hole

Sun,

Yu,

Zhu

et al. 2023

Microbiol Spectr

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The Sansha Yongle Blue Hole (SYBH), the deepest blue hole in the world, is an excellent habitat for revealing biogeochemical cycles in the anaerobic environment. However, how sulfur cycling is mediated by microorganisms in the SYBH hasn’t been fully understood. In this study, the water layers of the SYBH were divided into oxic zone, hypoxic zone, anoxic zone I and II, and microbial-mediated sulfur cycling in the SYBH was comprehensively interpreted. The 16S rRNA genes/transcripts analyses showed that the microbial community structures associated with the sulfur cycling in each zone had distinctive features. Sulfur-oxidizing bacteria were mostly constituted by Gammaproteobacteria , Alphaproteobacteria , Campylobacterota, and Chlorobia above the anoxic zone I and sulfate-reducing bacteria were dominated by Desulfobacterota in anoxic zones. Metagenomic analyses showed that the sulfide-oxidation-related gene sqr and genes encoding the Sox system were mainly distributed in the anoxic zone I, while genes related to dissimilatory sulfate reduction and sulfur intermediate metabolite reduction were mainly distributed in the anoxic zone II, indicating different sulfur metabolic processes between these two zones. Moreover, sulfur-metabolism-related genes were identified in 81 metagenome-assembled genomes (MAGs), indicating a high diversity of microbial communities involved in sulfur cycling. Among them, three MAGs from the candidate phyla JdFR-76 and AABM5-125-24 with genes related to dissimilatory sulfate reduction exhibited distinctive metabolic features. Our results showed unique and novel microbial populations in the SYBH sulfur cycle correlated to the sharp redox gradients, revealing complex biogeochemical processes in this extreme environment. IMPORTANCE Oxygen-deficient regions in the global ocean are expanding rapidly and affect the growth, reproduction and ecological processes of marine organisms. The anaerobic water body of about 150 m in the Sansha Yongle Blue Hole (SYBH) provided a suitable environment to study the specific microbial metabolism in anaerobic seawater. Here, we found that the vertical distributions of the total and active communities of sulfur-oxidizing bacteria (SOB) and sulfate-reducing bacteria (SRB) were different in each water layer of the SYBH according to the dissolved oxygen content. Genes related to sulfur metabolism also showed distinct stratification characteristics. Furthermore, we have obtained diverse metagenome-assembled genomes, some of which exhibit special sulfur metabolic characteristics, especially candidate phyla JdFR-76 and AABM5-125-24 were identified as potential novel SRB. The results of this study will promote further understanding of the sulfur cycle in extreme environments, as well as the environmental adaptability of microorganisms in blue holes.

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Genomic Evidence for the Recycling of Complex Organic Carbon by Novel Thermoplasmatota Clades in Deep-Sea Sediments

Abstract: Deep oceans receive large amounts of complex organic carbon and anthropogenic pollutants. The deep-sea sediments of the continental slopes serve as the biggest carbon sink on Earth.

Cited by 12 publications

References 105 publications

Structure and Assembly Mechanism of Archaeal Communities in Deep Soil Contaminated by Chlorinated Hydrocarbons

Structure and Assembly Mechanism of Archaeal Communities in Deep Soil Contaminated by Chlorinated Hydrocarbons

Investigation of the marine bacterial community along the coastline of the Gulf of Thailand

Microbial communities related to the sulfur cycle in the Sansha Yongle Blue Hole

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