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  • 1
    Online Resource
    Online Resource
    Deep-sea bacteria trigger settlement and metamorphosis of the mussel Mytilus coruscus larvae
    Springer Science and Business Media LLC ; 2021
    In:  Scientific Reports Vol. 11, No. 1 ( 2021-01-13)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 11, No. 1 ( 2021-01-13)
    Abstract: Bacteria from coast seawaters are widely known to induce larval recruitment of many invertebrates. However, whether and how deep-sea bacteria, that play crucial roles in the ecological and biogeochemical cycles, promote larval recruitment remains little known. Here, the interaction between deep-sea bacterial biofilms (BFs) and Mytilus coruscus larvae was tested. All these nine deep-sea bacterial isolates triggered planktonic-sessile transition, and the highest percentage of post-larvae was observed in Virgibacillus sp. 1 BF. Except for Pseudomonas sp. 3, Pseudoalteromonas sp. 32 and Bacillus sp. 13, other BF cell  densities were significantly related to their corresponding inductive efficiency. The deep-sea Virgibacillus sp. 1 BFʼs cue that triggers planktonic-sessile transition was uncovered. Treating Virgibacillus sp. 1 BFs through physic-chemical approaches reduced inducing impact and cell survival. The conditioned water collaborated with formalin-fixed Virgibacillus sp. 1 BF hoisted planktonic-sessile transition efficiency in comparison to each one alone. Thus, two signals derived from deep-sea bacteria trigger planktonic-sessile transition in M. coruscus . This finding firstly demonstrates that deep-sea bacteria has good potential for application in the mussel seed production and provides novel insight to clarify the bacteria-mussel interaction.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-020-79832-8
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2615211-3
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  • 2
    Online Resource
    Online Resource
    The hadal zone is an important and heterogeneous sink of black carbon in the ocean
    Springer Science and Business Media LLC ; 2022
    In:  Communications Earth & Environment Vol. 3, No. 1 ( 2022-02-10)
    Details
    In: Communications Earth & Environment, Springer Science and Business Media LLC, Vol. 3, No. 1 ( 2022-02-10)
    Abstract: Black carbon is ubiquitous in the marine environment. However, whether it accumulates in the deepest ocean region, the hadal zone, is unknown. Here we measure the concentration and carbon isotopes (δ 13 C and Δ 14 C) of black carbon and total organic carbon in sediments from six hadal trenches. Black carbon constituted 10% of trench total organic carbon, and its δ 13 C and Δ 14 C were more negative than those of total organic carbon, suggesting that the black carbon was predominantly derived from terrestrial C3 plants and fossil fuels. The contribution of fossil carbon to the black carbon pool was spatially heterogeneous, which could be related to differences in the distance to landmass, land cover and socioeconomic development. Globally, we estimate a black carbon burial rate of 1.0 ± 0.5 Tg yr −1 in the hadal zone, which is seven-fold higher than the global ocean average per unit area. We propose that the hadal zone is an important, but overlooked, sink of black carbon in the ocean.
    Type of Medium: Online Resource
    ISSN: 2662-4435
    URL: Article
    DOI: 10.1038/s43247-022-00351-7
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 3037243-4
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  • 3
    Online Resource
    Online Resource
    Elucidating the biomineralization of low-temperature hydrothermal precipitates with varying Fe, Si contents: Indication from ultrastructure and microbiological analyses
    Elsevier BV ; 2020
    In:  Deep Sea Research Part I: Oceanographic Research Papers Vol. 157 ( 2020-03), p. 103208-
    Details
    In: Deep Sea Research Part I: Oceanographic Research Papers, Elsevier BV, Vol. 157 ( 2020-03), p. 103208-
    Type of Medium: Online Resource
    ISSN: 0967-0637
    URL: Article
    DOI: 10.1016/j.dsr.2019.103208
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2020
    detail.hit.zdb_id: 1500309-7
    detail.hit.zdb_id: 1146810-5
    SSG: 14
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  • 4
    Online Resource
    Online Resource
    Research on Pressure-Retaining Performance of Transfer Device for Abyssal Sediments
    Marine Technology Society ; 2021
    In:  Marine Technology Society Journal Vol. 55, No. 2 ( 2021-03-01), p. 35-44
    Details
    In: Marine Technology Society Journal, Marine Technology Society, Vol. 55, No. 2 ( 2021-03-01), p. 35-44
    Abstract: Abstract In order to retain the activity of microorganisms from abyssal sediment samples, this paper proposes the first device that can be used for the pressure-retaining transfer of seabed sediment samples. The device can transfer sediment from the sampler to the sample processing container and maintain the in-situ pressure of the sample, with the maximum pressure up to 100 MPa. The sample is stirred in the lower cavity of the transfer container and divided into the culture container by pressure difference control. In order to maintain the internal pr essure of the device, a pressure stabilization system was designed, and a self-designed conical seal and right-angle combined seal were proposed. The high-pressure test is carried out through the experimental platform, the pressure is maintained for 1.5 h, and the pressure is actively reduced to verify the stability of the pressure stabilization system. The experimental results show that the pressure-retaining performance of the device can meet the transfer of 10,000 m of seabed sediment samples.
    Type of Medium: Online Resource
    ISSN: 0025-3324
    URL: Article
    DOI: 10.4031/MTSJ.55.2.11
    Language: English
    Publisher: Marine Technology Society
    Publication Date: 2021
    detail.hit.zdb_id: 410693-3
    detail.hit.zdb_id: 2730536-3
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  • 5
    Online Resource
    Online Resource
    Research and Analysis of Pressure-Maintaining Trapping Instrument for Macro-Organisms in Hadal Trenches
    MDPI AG ; 2020
    In:  Journal of Marine Science and Engineering Vol. 8, No. 8 ( 2020-08-10), p. 596-
    Details
    In: Journal of Marine Science and Engineering, MDPI AG, Vol. 8, No. 8 ( 2020-08-10), p. 596-
    Abstract: The ecosystem of the abyss is one of the fields that humans hardly know. The ultra-high hydrostatic pressure makes it very difficult to obtain abyssal organisms. Samples are often severely broken during recovery due to changes in environmental pressure, temperature, and other factors. Currently, there are no macro-organism samplers suitable for the abyss. The development of a pressure-maintaining sampler for the abyss is a prerequisite for abyssal ecosystem research. This paper mainly proposed a pressure-maintaining trapping instrument (PMTI) designed to work at a depth above 10,000 m. Unlike typical deep-sea equipment, this instrument is lightweight (about 65 kg in water). The instrument adopts a new structure, using a hollow piston as the sampling space and sealing the mechanism with O-rings at both ends of the piston, thus avoiding sealing methods such as ball valves and greatly reducing the weight of the equipment. The structure and working process of the instrument are described in detail in this paper. Meanwhile, in this paper, the movement resistance of the piston (mainly the resistance of the O-ring) is analyzed using a dynamic explicit method in Abaqus. The factors affecting the friction of the O-rings are analyzed via the method of orthogonal tests and ANOVA. In addition, high-pressure tests were conducted on key parts of the instrument, and the results showed that the instrument works well at 100 MPa.
    Type of Medium: Online Resource
    ISSN: 2077-1312
    URL: Article
    DOI: 10.3390/jmse8080596
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2738390-8
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  • 6
    Online Resource
    Online Resource
    Microbial diversity and biomineralization in low-temperature hydrothermal iron-silica-rich precipitates of the Lau Basin hydrothermal field
    Oxford University Press (OUP) ; 2012
    In:  FEMS Microbiology Ecology Vol. 81, No. 1 ( 2012-07), p. 205-216
    Details
    In: FEMS Microbiology Ecology, Oxford University Press (OUP), Vol. 81, No. 1 ( 2012-07), p. 205-216
    Type of Medium: Online Resource
    ISSN: 0168-6496
    URL: Article
    DOI: 10.1111/j.1574-6941.2012.01367.x
    RVK:
    WA 15000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2012
    detail.hit.zdb_id: 1501712-6
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    Polyphasic taxonomic analysis of Parasedimentitalea marina gen. nov., sp. nov., a psychrotolerant bacterium isolated from deep sea water of the New Britain Trench
    Oxford University Press (OUP) ; 2019
    In:  FEMS Microbiology Letters Vol. 366, No. 22 ( 2019-11-01)
    Details
    In: FEMS Microbiology Letters, Oxford University Press (OUP), Vol. 366, No. 22 ( 2019-11-01)
    Abstract: A novel Rhodobacteraceae bacterium, strain W43T, was isolated from a deep-sea water sample from the New Britain Trench. Strain W43T exhibited the highest 16S rRNA gene sequence similarity of 96.5% to Sedimentitalea nanhaiensis DSM 24252T, Phaeobacter gallaeciensis DSM 26640T, Phaeobacter inhibens DSM 16374T, and Phaeobacter porticola P97T. Phylogenetic analysis of the 16S rRNA gene and phylogenomic analysis of the genome showed that strain W43T formed an independent monophyletic branch within the family Rhodobacteraceae. Strain W43T was Gram-stain-negative, rod-shaped, and grew optimally at 16–20°C, pH 6.5–7.0 and 2% (w/v) NaCl. The principal fatty acids were C18:1ω7c/C18:1ω6c, major respiratory quinone was ubiquinone-10 and predominant polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. The 5 080 916 bp long genome, comprising a circular chromosome and four plasmids, exhibits a G + C content of 55.9 mol%. The combined phenotypic, chemotaxonomic and molecular data show that strain W43T represents a novel species of a novel genus, for which the name Parasedimentitalea marina gen. nov. sp. nov. is proposed (type strain W43T = MCCC 1K03532T = KCTC 62635T).
    Type of Medium: Online Resource
    ISSN: 1574-6968
    URL: Article
    DOI: 10.1093/femsle/fnaa004
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1501716-3
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  • 8
    Online Resource
    Online Resource
    Revealing the full biosphere structure and versatile metabolic functions in the deepest ocean sediment of the Challenger Deep
    Springer Science and Business Media LLC ; 2021
    In:  Genome Biology Vol. 22, No. 1 ( 2021-12)
    Details
    In: Genome Biology, Springer Science and Business Media LLC, Vol. 22, No. 1 ( 2021-12)
    Abstract: The full biosphere structure and functional exploration of the microbial communities of the Challenger Deep of the Mariana Trench, the deepest known hadal zone on Earth, lag far behind that of other marine realms. Results We adopt a deep metagenomics approach to investigate the microbiome in the sediment of Challenger Deep, Mariana Trench. We construct 178 metagenome-assembled genomes (MAGs) representing 26 phyla, 16 of which are reported from hadal sediment for the first time. Based on the MAGs, we find the microbial community functions are marked by enrichment and prevalence of mixotrophy and facultative anaerobic metabolism. The microeukaryotic community is found to be dominated by six fungal groups that are characterized for the first time in hadal sediment to possess the assimilatory and dissimilatory nitrate/sulfate reduction, and hydrogen sulfide oxidation pathways. By metaviromic analysis, we reveal novel hadal Caudovirales clades, distinctive virus-host interactions, and specialized auxiliary metabolic genes for modulating hosts’ nitrogen/sulfur metabolism. The hadal microbiome is further investigated by large-scale cultivation that cataloged 1070 bacterial and 19 fungal isolates from the Challenger Deep sediment, many of which are found to be new species specialized in the hadal habitat. Conclusion Our hadal MAGs and isolates increase the diversity of the Challenger Deep sediment microbial genomes and isolates present in the public. The deep metagenomics approach fills the knowledge gaps in structure and diversity of the hadal microbiome, and provides novel insight into the ecology and metabolism of eukaryotic and viral components in the deepest biosphere on earth.
    Type of Medium: Online Resource
    ISSN: 1474-760X
    URL: Article
    DOI: 10.1186/s13059-021-02408-w
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2040529-7
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  • 9
    Online Resource
    Online Resource
    Corynebacterium hadale sp. nov. isolated from hadopelagic water of the New Britain Trench
    Microbiology Society ; 2018
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 68, No. 5 ( 2018-05-01), p. 1474-1478
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 68, No. 5 ( 2018-05-01), p. 1474-1478
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijsem.0.002695
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2018
    detail.hit.zdb_id: 215062-1
    detail.hit.zdb_id: 2056611-6
    SSG: 12
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  • 10
    Online Resource
    Online Resource
    Halomonas piezotolerans sp. nov., a multiple-stress-tolerant bacterium isolated from a deep-sea sediment sample of the New Britain Trench
    Microbiology Society ; 2020
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 70, No. 4 ( 2020-04-01), p. 2560-2568
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 70, No. 4 ( 2020-04-01), p. 2560-2568
    Abstract: A piezotolerant, H 2 O 2 -tolerant, heavy-metal-tolerant, slightly halophilic bacterium (strain NBT06E8 T ) was isolated from a deep-sea sediment sample collected from the New Britain Trench at depth of 8900 m. The strain was aerobic, motile, Gram-stain-negative, rod-shaped, oxidase-positive and catalase-positive. Growth of the strain was observed at 4–45 °C (optimum, 30 °C), at pH 5–11 (optimum, pH 8–9) and in 0.5–21 % (w/v) NaCl (optimum, 3–7 %). The optimum pressure for growth was 0.1–30 MPa with tolerance up to 60 MPa. Under optimum growth conditions, the strain could tolerate 15 mM H 2 O 2 . Resuls of 16S rRNA gene sequence analysis showed that strain NBT06E8 T is closely related to Halomonas aquamarina DSM 30161 T (99.5%), Halomonas meridiana DSM 5425 T (99.43%) and Halomonas axialensis Althf1 T (99.35%). The digital DNA–DNA hybridization values between strain NBT06E8 T and the three related type strains, H. aquamarina , H. meridiana and H. axialensis , were 30.5±2.4 %, 30.7±2.5% and 31.5±2.5 %, respectively. The average nucleotide identity values between strain NBT06E8 T and the three related type strains were 86.26, 86.26 and 83.63 %, respectively. The major fatty acids were summed feature 8 (C 18 : 1   ω7 c and/or C 18 : 1   ω6 c ) and C 16 : 0 . The predominant respiratory quinone detected was ubiquinone-9 (Q-9). Based on its phenotypic and phylogenetic characteristics, we conclude that strain NBT06E8 T represents a novel species of the genus Halomonas , for which the name Halomonas piezotolerans sp. nov. is proposed (type strain NBT06E8 T = MCCC 1K04228 T =KCTC 72680 T ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijsem.0.004069
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2020
    detail.hit.zdb_id: 215062-1
    detail.hit.zdb_id: 2056611-6
    SSG: 12
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