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DataSet Summary

  • HostingRepository: PRIDE
  • AnnounceDate: 2019-03-15
  • AnnouncementXML: Submission_2019-03-15_00:28:08.xml
  • DigitalObjectIdentifier:
  • ReviewLevel: Peer-reviewed dataset
  • DatasetOrigin: Original data
  • RepositorySupport: Unsupported dataset by repository
  • PrimarySubmitter: XIN WANG
  • Title: The Antarctic Chlamydomonas spp. UWO241 and ICE-MDV exhibit differential restructuring of Photosystem I in response to iron
  • Description: Past studies have shown that the photosynthetic apparatus of a psychrophilic alga C. sp. UWO241 is remodeled to support high rates of Photosystem I (PSI)-associated cyclic electron flow (CEF). Iron levels in ELB are in the nanomolar range; therefore, we hypothesized that PSI restructuring in C. sp. UWO241 may reflect a strategy to survive long-term Fe-deficiency. We studied the effect of Fe availability in C. sp. UWO241, a mesophile, C. reinhardtii, and a second ELB psychrophile, Chlamydomonas sp. ICE-MDV. Under Fe-deficient conditions (2 µM Fe), abundance of the PSI reaction center protein, PsaA, as well as levels of photooxidizable P700 (ΔA820/A820) were significantly reduced in both psychrophiles relative to C. reinhardtii. In response to increased Fe, C. sp. ICE-MDV exhibited increases in PSI 77K Chl a fluorescence and ΔA820/A820 which matched that of C. reinhardtii, while C. sp. UWO241 exhibited moderate restoration of PSI function. Our results indicate that PSI functional organization in C. sp. UWO241 is unique. The unique physiological traits in PSI photochemistry exhibited by the psychrophiles may reflect adaptation to the stratified physicochemical conditions present the shallow vs. deep photic zones of a chemically Antarctic lake.
  • SpeciesList: scientific name: Chlamydomonas sp. UWO 241; NCBI TaxID: 1653778;
  • ModificationList: No PTMs are included in the dataset
  • Instrument: LTQ

Dataset History

VersionDatetimeStatusChangeLog Entry
02018-07-16 02:05:22ID requested
12019-03-15 00:28:09announced

Publication List

  1. Cook G, Teufel A, Kalra I, Li W, Wang X, Priscu J, Morgan-Kiss R, The Antarctic psychrophiles Chlamydomonas spp. UWO241 and ICE-MDV exhibit differential restructuring of photosystem I in response to iron. Photosynth Res, ():(2019) [pubmed]

Keyword List

  1. curator keyword: Biological
  2. submitter keyword: iron, Photosystem I, Antarctica, psychrophile

Contact List

    Xin Wang
    • contact affiliation: Department of Microbiology Miami University, Oxford OH 45056
    • contact email: wangx98@miamioh.edu
    • lab head:
    • contact affiliation: Miami University
    • contact email: wangx98@miamioh.edu
    • dataset submitter:

Full Dataset Link List

  1. Dataset FTP location
  2. PRIDE project URI
Repository Record List

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