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Bacteria are important dimethylsulfoniopropionate producers in marine aphotic and high-pressure environments

Author

Listed:
  • Yanfen Zheng

    (Ocean University of China)

  • Jinyan Wang

    (Ocean University of China)

  • Shun Zhou

    (Ocean University of China)

  • Yunhui Zhang

    (Ocean University of China)

  • Ji Liu

    (Ocean University of China)

  • Chun-Xu Xue

    (Ocean University of China)

  • Beth T. Williams

    (University of East Anglia)

  • Xiuxiu Zhao

    (Ocean University of China)

  • Li Zhao

    (Chinese Academy of Sciences)

  • Xiao-Yu Zhu

    (Ocean University of China)

  • Chuang Sun

    (Ocean University of China)

  • Hong-Hai Zhang

    (Ocean University of China)

  • Tian Xiao

    (Chinese Academy of Sciences)

  • Gui-Peng Yang

    (Ocean University of China)

  • Jonathan D. Todd

    (University of East Anglia)

  • Xiao-Hua Zhang

    (Ocean University of China
    Qingdao National Laboratory for Marine Science and Technology)

Abstract

Dimethylsulfoniopropionate (DMSP) is an important marine osmolyte. Aphotic environments are only recently being considered as potential contributors to global DMSP production. Here, our Mariana Trench study reveals a typical seawater DMSP/dimethylsulfide (DMS) profile, with highest concentrations in the euphotic zone and decreased but consistent levels below. The genetic potential for bacterial DMSP synthesis via the dsyB gene and its transcription is greater in the deep ocean, and is highest in the sediment.s DMSP catabolic potential is present throughout the trench waters, but is less prominent below 8000 m, perhaps indicating a preference to store DMSP in the deep for stress protection. Deep ocean bacterial isolates show enhanced DMSP production under increased hydrostatic pressure. Furthermore, bacterial dsyB mutants are less tolerant of deep ocean pressures than wild-type strains. Thus, we propose a physiological function for DMSP in hydrostatic pressure protection, and that bacteria are key DMSP producers in deep seawater and sediment.

Suggested Citation

  • Yanfen Zheng & Jinyan Wang & Shun Zhou & Yunhui Zhang & Ji Liu & Chun-Xu Xue & Beth T. Williams & Xiuxiu Zhao & Li Zhao & Xiao-Yu Zhu & Chuang Sun & Hong-Hai Zhang & Tian Xiao & Gui-Peng Yang & Jonath, 2020. "Bacteria are important dimethylsulfoniopropionate producers in marine aphotic and high-pressure environments," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18434-4
    DOI: 10.1038/s41467-020-18434-4
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    Cited by:

    1. Ming Peng & Chun-Yang Li & Xiu-Lan Chen & Beth T. Williams & Kang Li & Ya-Nan Gao & Peng Wang & Ning Wang & Chao Gao & Shan Zhang & Marie C. Schoelmerich & Jillian F. Banfield & J. Benjamin Miller & N, 2022. "Insights into methionine S-methylation in diverse organisms," Nature Communications, Nature, vol. 13(1), pages 1-15, December.

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