Refractory humic-like dissolved organic matter fuels microbial communities in deep energy-limiting marine sediments.
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| Title: | Refractory humic-like dissolved organic matter fuels microbial communities in deep energy-limiting marine sediments. |
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| Authors: | Chen, Yunru1 (AUTHOR), Sui, Weikang2 (AUTHOR), Wang, Jing2 (AUTHOR), He, Ding3,4 (AUTHOR), Dong, Liang2 (AUTHOR), Waniek, Joanna J.5 (AUTHOR), Wang, Fengping1,2,6 (AUTHOR) fengpingw@sjtu.edu.cn |
| Source: | SCIENCE CHINA Earth Sciences. Aug2023, Vol. 66 Issue 8, p1738-1756. 19p. |
| Subjects: | Marine sediments, Coastal sediments, Microbial communities, Dissolved organic matter, Organic compounds, Carbon cycle, Refractory materials |
| Abstract: | Humic-like dissolved organic matter (DOM), usually regarded as refractory, is a major component of DOM in marine sediment pore waters. However, its bio-reactivity remains poorly explored in natural environments, which makes its roles in supporting subsurface microbial communities and regulating long-term carbon cycling elusive. Here, the bio-reactivity of humic-like DOM was evaluated by modeled reaction rates together with its interactions with microbial communities in five sediment cores collected from the eutrophic Pearl River Estuary to the oligotrophic deep-sea basin in the northern South China Sea. We revealed contrasting relationships between humic-like DOM and microbes in the coastal and deep-sea sediments. In eutrophic coastal sediments, specific microbial groups enriched in the deep layers co-varied with humic-like DOM, while most microbial groups were significantly correlated with protein-like DOM, microbial transformation of which likely resulted in the production of humic-like DOM. On the contrary, in energy-limiting deep-sea sediments, over 70% of the microbial groups were found closely correlated with humic-like DOM, a net consumption of which was demonstrated in deep layers. The consumption of humic-like DOM in deep-sea sediments reduced its total production flux in the uppermost ~5-meter layer to about one-tenth of that in coastal sediments, which could consequently decrease the refractory DOM flux to the overlying seawater and influence long-term oceanic carbon cycling. [ABSTRACT FROM AUTHOR] |
| Copyright of SCIENCE CHINA Earth Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 169911330 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Refractory humic-like dissolved organic matter fuels microbial communities in deep energy-limiting marine sediments. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yunru%22">Chen, Yunru</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sui%2C+Weikang%22">Sui, Weikang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Jing%22">Wang, Jing</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Ding%22">He, Ding</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dong%2C+Liang%22">Dong, Liang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Waniek%2C+Joanna+J%2E%22">Waniek, Joanna J.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Fengping%22">Wang, Fengping</searchLink><relatesTo>1,2,6</relatesTo> (AUTHOR)<i> fengpingw@sjtu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22SCIENCE+CHINA+Earth+Sciences%22">SCIENCE CHINA Earth Sciences</searchLink>. Aug2023, Vol. 66 Issue 8, p1738-1756. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Marine+sediments%22">Marine sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Coastal+sediments%22">Coastal sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+communities%22">Microbial communities</searchLink><br /><searchLink fieldCode="DE" term="%22Dissolved+organic+matter%22">Dissolved organic matter</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+cycle%22">Carbon cycle</searchLink><br /><searchLink fieldCode="DE" term="%22Refractory+materials%22">Refractory materials</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Humic-like dissolved organic matter (DOM), usually regarded as refractory, is a major component of DOM in marine sediment pore waters. However, its bio-reactivity remains poorly explored in natural environments, which makes its roles in supporting subsurface microbial communities and regulating long-term carbon cycling elusive. Here, the bio-reactivity of humic-like DOM was evaluated by modeled reaction rates together with its interactions with microbial communities in five sediment cores collected from the eutrophic Pearl River Estuary to the oligotrophic deep-sea basin in the northern South China Sea. We revealed contrasting relationships between humic-like DOM and microbes in the coastal and deep-sea sediments. In eutrophic coastal sediments, specific microbial groups enriched in the deep layers co-varied with humic-like DOM, while most microbial groups were significantly correlated with protein-like DOM, microbial transformation of which likely resulted in the production of humic-like DOM. On the contrary, in energy-limiting deep-sea sediments, over 70% of the microbial groups were found closely correlated with humic-like DOM, a net consumption of which was demonstrated in deep layers. The consumption of humic-like DOM in deep-sea sediments reduced its total production flux in the uppermost ~5-meter layer to about one-tenth of that in coastal sediments, which could consequently decrease the refractory DOM flux to the overlying seawater and influence long-term oceanic carbon cycling. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of SCIENCE CHINA Earth Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11430-022-1123-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 1738 Subjects: – SubjectFull: Marine sediments Type: general – SubjectFull: Coastal sediments Type: general – SubjectFull: Microbial communities Type: general – SubjectFull: Dissolved organic matter Type: general – SubjectFull: Organic compounds Type: general – SubjectFull: Carbon cycle Type: general – SubjectFull: Refractory materials Type: general Titles: – TitleFull: Refractory humic-like dissolved organic matter fuels microbial communities in deep energy-limiting marine sediments. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chen, Yunru – PersonEntity: Name: NameFull: Sui, Weikang – PersonEntity: Name: NameFull: Wang, Jing – PersonEntity: Name: NameFull: He, Ding – PersonEntity: Name: NameFull: Dong, Liang – PersonEntity: Name: NameFull: Waniek, Joanna J. – PersonEntity: Name: NameFull: Wang, Fengping IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 16747313 Numbering: – Type: volume Value: 66 – Type: issue Value: 8 Titles: – TitleFull: SCIENCE CHINA Earth Sciences Type: main |
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