Nitric oxide-activated calcium/calmodulin-dependent protein kinase regulates the abscisic acid-induced antioxidant defence in maize.

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  • Author(s): Ma F;Ma F; Lu R; Liu H; Shi B; Zhang J; Tan M; Zhang A; Jiang M
  • Source:
    Journal of experimental botany [J Exp Bot] 2012 Aug; Vol. 63 (13), pp. 4835-47. Date of Electronic Publication: 2012 Aug 03.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Oxford University Press Country of Publication: England NLM ID: 9882906 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1460-2431 (Electronic) Linking ISSN: 00220957 NLM ISO Abbreviation: J Exp Bot Subsets: MEDLINE
    • Publication Information:
      Original Publication: Oxford, UK : Oxford University Press,
    • Subject Terms:
      Calmodulin/*metabolism ; Gene Expression Regulation, Plant/*drug effects ; Nitric Oxide/*metabolism ; Plant Proteins/*metabolism ; Signal Transduction/*drug effects ; Zea mays/*enzymology; Abscisic Acid/pharmacology ; Antioxidants/metabolism ; Calcium/metabolism ; Hydrogen Peroxide/pharmacology ; Plant Growth Regulators/pharmacology ; Plant Leaves/drug effects ; Plant Leaves/enzymology ; Plant Leaves/genetics ; Plant Leaves/ultrastructure ; Plant Proteins/genetics ; Up-Regulation/drug effects ; Zea mays/drug effects ; Zea mays/genetics ; Zea mays/ultrastructure
    • Abstract:
      Nitric oxide (NO), hydrogen peroxide (H2O2), and calcium (Ca2+)/calmodulin (CaM) are all required for abscisic acid (ABA)-induced antioxidant defence. Ca2+/CaM-dependent protein kinase (CCaMK) is a strong candidate for the decoder of Ca2+ signals. However, whether CCaMK is involved in ABA-induced antioxidant defence is unknown. The results of the present study show that exogenous and endogenous ABA induced increases in the activity of ZmCCaMK and the expression of ZmCCaMK in leaves of maize. Subcellular localization analysis showed that ZmCCaMK is located in the nucleus, the cytoplasm, and the plasma membrane. The transient expression of ZmCCaMK and the RNA interference (RNAi) silencing of ZmCCaMK analysis in maize protoplasts revealed that ZmCCaMK is required for ABA-induced antioxidant defence. Moreover, treatment with the NO donor sodium nitroprusside (SNP) induced the activation of ZmCCaMK and the expression of ZmCCaMK. Pre-treatments with an NO scavenger and inhibitor blocked the ABA-induced increases in the activity and the transcript level of ZmCCaMK. Conversely, RNAi silencing of ZmCCaMK in maize protoplasts did not affect the ABA-induced NO production, which was further confirmed using a mutant of OsCCaMK, the homologous gene of ZmCCaMK in rice. Moreover, H2O2 was also required for the ABA activation of ZmCCaMK, and pre-treatments with an NO scavenger and inhibitor inhibited the H2O2-induced increase in the activity of ZmCCaMK. Taken together, the data clearly suggest that ZmCCaMK is required for ABA-induced antioxidant defence, and H2O2-dependent NO production plays an important role in the ABA-induced activation of ZmCCaMK.
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    • Accession Number:
      0 (Antioxidants)
      0 (Calmodulin)
      0 (Plant Growth Regulators)
      0 (Plant Proteins)
      31C4KY9ESH (Nitric Oxide)
      72S9A8J5GW (Abscisic Acid)
      BBX060AN9V (Hydrogen Peroxide)
      SY7Q814VUP (Calcium)
    • Publication Date:
      Date Created: 20120807 Date Completed: 20131231 Latest Revision: 20240321
    • Publication Date:
      20240321
    • Accession Number:
      PMC3427994
    • Accession Number:
      10.1093/jxb/ers161
    • Accession Number:
      22865912