The involvement of calmodulin and protein kinases in the upstream of cytosolic and nucleic calcium signaling induced by hypoosmotic shock in tobacco cells.

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  • Additional Information
    • Source:
      Publisher: Taylor & Francis Country of Publication: United States NLM ID: 101291431 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1559-2324 (Electronic) Linking ISSN: 15592316 NLM ISO Abbreviation: Plant Signal Behav Subsets: MEDLINE
    • Publication Information:
      Publication: 2015- : Philadelphia, PA : Taylor & Francis
      Original Publication: Georgetown, TX : Landes Bioscience
    • Subject Terms:
      Calmodulin/*metabolism ; Cytosol/*metabolism ; Protein Kinases/*metabolism ; Nicotiana/*metabolism; Calcium Signaling/physiology ; Cell Nucleus/metabolism
    • Abstract:
      Changes in Ca 2+ concentrations in cytosol ([Ca 2+ ] C ) or nucleus ([Ca 2+ ] N ) may play some vital roles in plants under hypoosmotic shock (Hypo-OS). Here, we observed that Hypo-OS induces biphasic increases in [Ca 2+ ] C and [Ca 2+ ] N in two tobacco cell lines (BY-2) expressing apoaequorin either in the cytosol or in the nucleus. Both [Ca 2+ ] C and [Ca 2+ ] N were sensitively modulated by the inhibitors of calmodulin and protein kinases, supporting the view that calmodulin suppresses the 1 st peaks and and protein kinases enhance 2 nd peaks in [Ca 2+ ] C and [Ca 2+ ] N . Data also suggested that the 1 st and 2 nd events depend on the internal and extracellular Ca 2+ sources, respectively.
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    • Contributed Indexing:
      Keywords: Calmodulin; cytosolic calcium signaling; hypoosmotic shock; nucleic calcium signaling; protein kinases; tobacco cells
    • Accession Number:
      0 (Calmodulin)
      EC 2.7.- (Protein Kinases)
    • Publication Date:
      Date Created: 20180802 Date Completed: 20190603 Latest Revision: 20231213
    • Publication Date:
      20231215
    • Accession Number:
      PMC6149468
    • Accession Number:
      10.1080/15592324.2018.1494467
    • Accession Number:
      30067454