Metabolism Interactions Promote the Overall Functioning of the Episymbiotic Chemosynthetic Community of Shinkaia crosnieri of Cold Seeps

Xu, Zheng; Wang, Minxiao; Zhang, Huan; He, Wei; Cao, Lei; Lian, Chao; Zhong, Zhaoshan; Wang, Hao; Fu, Lulu; Zhang, Xin; Li, Chaolun

doi:10.1128/msystems.00320-22

Cited by 8 publications

(16 citation statements)

References 95 publications

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“… *1 CH 4 concentration in L_SEEP far exceeds the sensor measure range, 50 μM. *2 DO concentration in F_SEEP/Mussel has been previously reported by Xu et al (2022) . *3 take the high sulfate concentration (28 mM) in seawater as the environment background value, which makes it the most abundant and, often, important electron acceptor at cold seeps ( Joye, 2020 ).…”

Section: Resultsmentioning

confidence: 59%

“…Carbonate pavement usually with the low methane fluids and hosted methane-oxidizing microbial community and carried out AOM predominantly. Microbial mat distributed surrounding the methane and sulfide-rich seeps, supporting a variety of thiotrophic bacteria, affiliated with Campylobacterota, which oxidized sulfide coupled to oxygen ( Xu et al, 2022 ; Sun et al, 2023 ). Mussel beds distributed correlatedly to methane concentration, aggregating around methane seepage and gas vents ( Cordes et al, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

“…Microbiomes play a vital role in material exchange and energy flow in interface layers between deep biosphere in sediments and upper water columns ( Arakawa et al, 2006 ; Dang et al, 2010 ; Niu et al, 2017 ; Bhattarai et al, 2018 ; Wu et al, 2018 ; Cui et al, 2019 ; Chen et al, 2022 ). Sediment-water interface is the cyclical oxic-hypoxic shifting environments, and methane concentrations (ranging from 0.2 to 1 mmol/L) are negatively correlated with oxygen concentrations (ranging from 0.6 to 3.5 mg/L) ( Xu et al, 2022 ). Microenvironments are developed not only by enormous plumes from the deep earth sphere but also by inherent background seawater, even the indigenous microbiomes in the original water environment ( Joye, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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The diversification and potential function of microbiome in sediment-water interface of methane seeps in South China Sea

Fu,

Liu,

Wang

et al. 2024

Front. Microbiol.

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The sediment-water interfaces of cold seeps play important roles in nutrient transportation between seafloor and deep-water column. Microorganisms are the key actors of biogeochemical processes in this interface. However, the knowledge of the microbiome in this interface are limited. Here we studied the microbial diversity and potential metabolic functions by 16S rRNA gene amplicon sequencing at sediment-water interface of two active cold seeps in the northern slope of South China Sea, Lingshui and Site F cold seeps. The microbial diversity and potential functions in the two cold seeps are obviously different. The microbial diversity of Lingshui interface areas, is found to be relatively low. Microbes associated with methane consumption are enriched, possibly due to the large and continuous eruptions of methane fluids. Methane consumption is mainly mediated by aerobic oxidation and denitrifying anaerobic methane oxidation (DAMO). The microbial diversity in Site F is higher than Lingshui. Fluids from seepage of Site F are mitigated by methanotrophic bacteria at the cyclical oxic-hypoxic fluctuating interface where intense redox cycling of carbon, sulfur, and nitrogen compounds occurs. The primary modes of microbial methane consumption are aerobic methane oxidation, along with DAMO, sulfate-dependent anaerobic methane oxidation (SAMO). To sum up, anaerobic oxidation of methane (AOM) may be underestimated in cold seep interface microenvironments. Our findings highlight the significance of AOM and interdependence between microorganisms and their environments in the interface microenvironments, providing insights into the biogeochemical processes that govern these unique ecological systems.

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Section: Resultsmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The diversification and potential function of microbiome in sediment-water interface of methane seeps in South China Sea

Fu,

Liu,

Wang

et al. 2024

Front. Microbiol.

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“…S. crosnieri raises complex microbial communities, rather than certain symbiotic species, that mainly attach to the setae of appendages (Fig. 6.5; Xu et al 2022). Rod-shaped Methylococcales attach to the setae surfaces or via the formation of filamentous aggregations with diameters between 0.8 and 1.5 μm.…”

Section: Adaptive Characteristics Of a Symbiotic Lifestylementioning

confidence: 99%

“…In S. crosnieri, the metabolic potentials of the dominant taxa have been reconstructed based on KEGG module completeness visualizations in Fig. 6.7a (Xu et al 2022). The episymbionts exhibited the potential to provide most nutrients to their hosts, including hydrocarbons, vitamins, and essential amino acids.…”

Section: Nutrient Transfer Between Host and Symbiontsmentioning

confidence: 99%

Symbioses from Cold Seeps

Wang

et al. 2023

South China Sea Seeps

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Establishing symbiosis between bacteria and invertebrates can significantly enhance energy transfer efficiency between them, which may aid in shaping the flourishing community in deep-sea chemosynthetic ecosystems, including cold seeps, hydrothermal vents, and organic falls. The symbionts utilize the chemical energy from reductive materials to fix carbon, and the hosts absorb the nutrients for growth through farming, milking, or both. Moreover, symbiosis can enhance the sustainability of both participants to survive in harsh conditions. However, the exact process and the regulatory network of symbiosis are still unknown. The cold seeps in the South China Sea offer natural laboratories to study the composition, ecological functions, and regulatory mechanisms of deep-sea symbioses. In this chapter, we focused on two dominant species, a deep-sea mussel Gigantidas platifrons and a squat lobster Shinkaia crosnieri, which represent endosymbiosis and episymbiosis, respectively, at Site F to summarize our understanding of deep-sea chemosymbiosis. We also discussed some promising avenues for future studies, such as deep-sea in situ experiments to show the exact responses of deep-sea organisms, culture-dependent experiments with genetic operations to validate the functions of critical genes, and microscale omics to elucidate the possible interactions at subcellular levels.

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Hydrate formation significantly decreases the uplifting rate of methane bubble from the seafloor to the upper water column

Feng,

Xie,

Tang

et al. 2023

Science Bulletin

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Metabolism Interactions Promote the Overall Functioning of the Episymbiotic Chemosynthetic Community of Shinkaia crosnieri of Cold Seeps

Cited by 8 publications

References 95 publications

The diversification and potential function of microbiome in sediment-water interface of methane seeps in South China Sea

The diversification and potential function of microbiome in sediment-water interface of methane seeps in South China Sea

Symbioses from Cold Seeps

Hydrate formation significantly decreases the uplifting rate of methane bubble from the seafloor to the upper water column

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