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IJMS, Vol. 19, Pages 1922: Nucleolar GTP-Binding Protein 1-2 (NOG1-2) Interacts with Jasmonate-ZIMDomain Protein 9 (JAZ9) to Regulate Stomatal Aperture during Plant Immunity

IJMS, Vol. 19, Pages 1922: Nucleolar GTP-Binding Protein 1-2 (NOG1-2) Interacts with Jasmonate-ZIMDomain Protein 9 (JAZ9) to Regulate Stomatal Aperture during Plant Immunity

International Journal of Molecular Sciences doi: 10.3390/ijms19071922

Authors: Seonghee Lee Clemencia M. Rojas Sunhee Oh Miyoung Kang Swarup Roy Choudhury Hee-Kyung Lee Randy D. Allen Sona Pandey Kirankumar S. Mysore

Plant defense responses at stomata and apoplast are the most important early events during plant–bacteria interactions. The key components of stomatal defense responses have not been fully characterized. A GTPase encoding gene, NOG1-2, which is required for stomatal innate immunity against bacterial pathogens, was recently identified. Functional studies in Arabidopsis revealed that NOG1-2 regulates guard cell signaling in response to biotic and abiotic stimulus through jasmonic acid (JA)- and abscisic acid (ABA)-mediated pathways. Interestingly, in this study, Jasmonate-ZIM-domain protein 9 (JAZ9) was identified to interact with NOG1-2 for the regulation of stomatal closure. Upon interaction, JAZ9 reduces GTPase activity of NOG1-2. We explored the role of NOG1-2 binding with JAZ9 for COI1-mediated JA signaling and hypothesized that its function may be closely linked to MYC2 transcription factor in the regulation of the JA-signaling cascade in stomatal defense against bacterial pathogens. Our study provides valuable information on the function of a small GTPase, NOG1-2, in guard cell signaling and early plant defense in response to bacterial pathogens.

Authors:   Lee, Seonghee ; Rojas, Clemencia M.; Oh, Sunhee ; Kang, Miyoung ; Choudhury, Swarup Roy; Lee, Hee-Kyung ; Allen, Randy D.; Pandey, Sona ; Mysore, Kirankumar S.
Journal:   International Journal of Molecular Sciences
Volume:   19
edition:   7
Year:   2018
Pages:   1922
DOI:   10.3390/ijms19071922
Publication date:   30-Jun-2018
Facts, background information, dossiers
  • pathogens
  • immunity
  • cell signaling
  • transcription
  • stomata
  • jasmonic acid
  • events
  • abscisic acid
  • ABA
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