Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments

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Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments. / Liu, Feifei; Wang, Zhenyu; Wu, Bo; Bjerg, Jesper T; Hu, Wenzhe; Guo, Xue; Guo, Jun; Nielsen, Lars Peter; Qiu, Rongliang; Xu, Meiying.

I: The ISME Journal, Bind 15, Nr. 5, 05.2021, s. 1551-1563.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Liu, F, Wang, Z, Wu, B, Bjerg, JT, Hu, W, Guo, X, Guo, J, Nielsen, LP, Qiu, R & Xu, M 2021, 'Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments', The ISME Journal, bind 15, nr. 5, s. 1551-1563. https://doi.org/10.1038/s41396-020-00869-8

APA

Liu, F., Wang, Z., Wu, B., Bjerg, J. T., Hu, W., Guo, X., Guo, J., Nielsen, L. P., Qiu, R., & Xu, M. (2021). Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments. The ISME Journal, 15(5), 1551-1563. https://doi.org/10.1038/s41396-020-00869-8

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Author

Liu, Feifei ; Wang, Zhenyu ; Wu, Bo ; Bjerg, Jesper T ; Hu, Wenzhe ; Guo, Xue ; Guo, Jun ; Nielsen, Lars Peter ; Qiu, Rongliang ; Xu, Meiying. / Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments. I: The ISME Journal. 2021 ; Bind 15, Nr. 5. s. 1551-1563.

Bibtex

@article{9ca53cdae92f48719a830acf1f7a6ce6,
title = "Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments",
abstract = "Profound biogeochemical responses of anoxic sediments to the fluctuation of dissolved oxygen (DO) concentration in overlaying water are often observed, despite oxygen having a limited permeability in sediments. This contradiction is indicative of previously unrecognized mechanism that bridges the oxic and anoxic sediment layers. Using sediments from an urban river suffering from long-term polycyclic aromatic hydrocarbons (PAHs) contamination, we analyzed the physicochemical and microbial responses to artificially elevated DO (eDO) in the overlying water over 9 weeks of incubation. Significant changes in key environmental parameters and microbial diversity were detected over the 0-6 cm sediment depth, along with accelerated degradation of PAHs, despite that eDO only increased the porewater DO in the millimeter subfacial layer. The dynamics of physicochemical and microbial properties coincided well with significantly increased presence of centimeter-long sulfide-oxidizing cable bacteria filaments under eDO, and were predominantly driven by cable bacteria metabolic activities. Phylogenetic ecological network analyses further revealed that eDO reinforced cable bacteria associated interspecific interactions with functional microorganisms such as sulfate reducers, PAHs degraders, and electroactive microbes, suggesting enhanced microbial syntrophy taking advantage of cable bacteria metabolism for the regeneration of SO42- and long-distance electron transfer. Together, our results suggest cable bacteria may mediate the impacts of eDO in anaerobic sediments by altering sediment physiochemical properties and by reinforcing community interactions. Our findings highlight the ecological importance of cable bacteria in sediments.",
keywords = "BIODEGRADATION, CARBON, COMMUNITY, COOCCURRENCE PATTERNS, DISTANCE ELECTRON-TRANSPORT, POLYCYCLIC AROMATIC-HYDROCARBONS, REDUCTION, SP NOV., SUCCESSION, SULFUR OXIDATION",
author = "Feifei Liu and Zhenyu Wang and Bo Wu and Bjerg, {Jesper T} and Wenzhe Hu and Xue Guo and Jun Guo and Nielsen, {Lars Peter} and Rongliang Qiu and Meiying Xu",
year = "2021",
month = may,
doi = "10.1038/s41396-020-00869-8",
language = "English",
volume = "15",
pages = "1551--1563",
journal = "I S M E Journal",
issn = "1751-7362",
publisher = "Nature Publishing Group",
number = "5",

}

RIS

TY - JOUR

T1 - Cable bacteria extend the impacts of elevated dissolved oxygen into anoxic sediments

AU - Liu, Feifei

AU - Wang, Zhenyu

AU - Wu, Bo

AU - Bjerg, Jesper T

AU - Hu, Wenzhe

AU - Guo, Xue

AU - Guo, Jun

AU - Nielsen, Lars Peter

AU - Qiu, Rongliang

AU - Xu, Meiying

PY - 2021/5

Y1 - 2021/5

N2 - Profound biogeochemical responses of anoxic sediments to the fluctuation of dissolved oxygen (DO) concentration in overlaying water are often observed, despite oxygen having a limited permeability in sediments. This contradiction is indicative of previously unrecognized mechanism that bridges the oxic and anoxic sediment layers. Using sediments from an urban river suffering from long-term polycyclic aromatic hydrocarbons (PAHs) contamination, we analyzed the physicochemical and microbial responses to artificially elevated DO (eDO) in the overlying water over 9 weeks of incubation. Significant changes in key environmental parameters and microbial diversity were detected over the 0-6 cm sediment depth, along with accelerated degradation of PAHs, despite that eDO only increased the porewater DO in the millimeter subfacial layer. The dynamics of physicochemical and microbial properties coincided well with significantly increased presence of centimeter-long sulfide-oxidizing cable bacteria filaments under eDO, and were predominantly driven by cable bacteria metabolic activities. Phylogenetic ecological network analyses further revealed that eDO reinforced cable bacteria associated interspecific interactions with functional microorganisms such as sulfate reducers, PAHs degraders, and electroactive microbes, suggesting enhanced microbial syntrophy taking advantage of cable bacteria metabolism for the regeneration of SO42- and long-distance electron transfer. Together, our results suggest cable bacteria may mediate the impacts of eDO in anaerobic sediments by altering sediment physiochemical properties and by reinforcing community interactions. Our findings highlight the ecological importance of cable bacteria in sediments.

AB - Profound biogeochemical responses of anoxic sediments to the fluctuation of dissolved oxygen (DO) concentration in overlaying water are often observed, despite oxygen having a limited permeability in sediments. This contradiction is indicative of previously unrecognized mechanism that bridges the oxic and anoxic sediment layers. Using sediments from an urban river suffering from long-term polycyclic aromatic hydrocarbons (PAHs) contamination, we analyzed the physicochemical and microbial responses to artificially elevated DO (eDO) in the overlying water over 9 weeks of incubation. Significant changes in key environmental parameters and microbial diversity were detected over the 0-6 cm sediment depth, along with accelerated degradation of PAHs, despite that eDO only increased the porewater DO in the millimeter subfacial layer. The dynamics of physicochemical and microbial properties coincided well with significantly increased presence of centimeter-long sulfide-oxidizing cable bacteria filaments under eDO, and were predominantly driven by cable bacteria metabolic activities. Phylogenetic ecological network analyses further revealed that eDO reinforced cable bacteria associated interspecific interactions with functional microorganisms such as sulfate reducers, PAHs degraders, and electroactive microbes, suggesting enhanced microbial syntrophy taking advantage of cable bacteria metabolism for the regeneration of SO42- and long-distance electron transfer. Together, our results suggest cable bacteria may mediate the impacts of eDO in anaerobic sediments by altering sediment physiochemical properties and by reinforcing community interactions. Our findings highlight the ecological importance of cable bacteria in sediments.

KW - BIODEGRADATION

KW - CARBON

KW - COMMUNITY

KW - COOCCURRENCE PATTERNS

KW - DISTANCE ELECTRON-TRANSPORT

KW - POLYCYCLIC AROMATIC-HYDROCARBONS

KW - REDUCTION

KW - SP NOV.

KW - SUCCESSION

KW - SULFUR OXIDATION

U2 - 10.1038/s41396-020-00869-8

DO - 10.1038/s41396-020-00869-8

M3 - Journal article

C2 - 33479492

VL - 15

SP - 1551

EP - 1563

JO - I S M E Journal

JF - I S M E Journal

SN - 1751-7362

IS - 5

ER -