Nothing Special   »   [go: up one dir, main page]
IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v5y2014i1d10.1038_ncomms5797.html
   My bibliography  Save this article

Magnetic properties of uncultivated magnetotactic bacteria and their contribution to a stratified estuary iron cycle

Author

Listed:
  • A.P. Chen

    (Macquarie University)

  • V.M. Berounsky

    (Graduate School of Oceanography, University of Rhode Island)

  • M.K. Chan

    (School of Physics and Astronomy, University of Minnesota)

  • M.G. Blackford

    (Australian Nuclear Science and Technology Organisation)

  • C. Cady

    (Rutgers, The State University of New Jersey
    Present address: Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA)

  • B.M. Moskowitz

    (University of Minnesota)

  • P. Kraal

    (Utrecht University)

  • E.A. Lima

    (Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology)

  • R.E. Kopp

    (Rutgers University)

  • G.R. Lumpkin

    (Australian Nuclear Science and Technology Organisation)

  • B.P. Weiss

    (Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology)

  • P. Hesse

    (Macquarie University)

  • N.G.F. Vella

    (Microscopy Unit, Faculty of Science, Macquarie University)

Abstract
Of the two nanocrystal (magnetosome) compositions biosynthesized by magnetotactic bacteria (MTB), the magnetic properties of magnetite magnetosomes have been extensively studied using widely available cultures, while those of greigite magnetosomes remain poorly known. Here we have collected uncultivated magnetite- and greigite-producing MTB to determine their magnetic coercivity distribution and ferromagnetic resonance (FMR) spectra and to assess the MTB-associated iron flux. We find that compared with magnetite-producing MTB cultures, FMR spectra of uncultivated MTB are characterized by a wider empirical parameter range, thus complicating the use of FMR for fossilized magnetosome (magnetofossil) detection. Furthermore, in stark contrast to putative Neogene greigite magnetofossil records, the coercivity distributions for greigite-producing MTB are fundamentally left-skewed with a lower median. Lastly, a comparison between the MTB-associated iron flux in the investigated estuary and the pyritic-Fe flux in the Black Sea suggests MTB play an important, but heretofore overlooked role in euxinic marine system iron cycle.

Suggested Citation

  • A.P. Chen & V.M. Berounsky & M.K. Chan & M.G. Blackford & C. Cady & B.M. Moskowitz & P. Kraal & E.A. Lima & R.E. Kopp & G.R. Lumpkin & B.P. Weiss & P. Hesse & N.G.F. Vella, 2014. "Magnetic properties of uncultivated magnetotactic bacteria and their contribution to a stratified estuary iron cycle," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5797
    DOI: 10.1038/ncomms5797
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms5797
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms5797?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5797. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.