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Proteomic Analysis of MeJa-Induced Defense Responses in Rice against Wounding
Article

Jasmonic Acid-Induced VQ-Motif-Containing Protein OsVQ13 Influences the OsWRKY45 Signaling Pathway and Grain Size by Associating with OsMPK6 in Rice

Plant Genome and Resource Research Center, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761-0795, Japan
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Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(12), 2917; https://doi.org/10.3390/ijms20122917
Received: 23 May 2019 / Revised: 12 June 2019 / Accepted: 14 June 2019 / Published: 14 June 2019
(This article belongs to the Special Issue Jasmonic Acid Pathway in Plants)
Jasmonic acid (JA) is a plant hormone that plays an important role in the defense response and stable growth of rice. In this study, we investigated the role of the JA-responsive valine-glutamine (VQ)-motif-containing protein OsVQ13 in JA signaling in rice. OsVQ13 was primarily located in the nucleus and cytoplasm. The transgenic rice plants overexpressing OsVQ13 exhibited a JA-hypersensitive phenotype and increased JA-induced resistance to Xanthomonas oryzae pv. oryzae (Xoo), which is the bacteria that causes rice bacterial blight, one of the most serious diseases in rice. Furthermore, we identified a mitogen-activated protein kinase, OsMPK6, as an OsVQ13-associating protein. The expression of genes regulated by OsWRKY45, an important WRKY-type transcription factor for Xoo resistance that is known to be regulated by OsMPK6, was upregulated in OsVQ13-overexpressing rice plants. The grain size of OsVQ13-overexpressing rice plants was also larger than that of the wild type. These results indicated that OsVQ13 positively regulated JA signaling by activating the OsMPK6–OsWRKY45 signaling pathway in rice. View Full-Text
Keywords: MAP kinase; jasmonate; rice bacterial blight; salicylic acid; grain development MAP kinase; jasmonate; rice bacterial blight; salicylic acid; grain development
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MDPI and ACS Style

Uji, Y.; Kashihara, K.; Kiyama, H.; Mochizuki, S.; Akimitsu, K.; Gomi, K. Jasmonic Acid-Induced VQ-Motif-Containing Protein OsVQ13 Influences the OsWRKY45 Signaling Pathway and Grain Size by Associating with OsMPK6 in Rice. Int. J. Mol. Sci. 2019, 20, 2917. https://doi.org/10.3390/ijms20122917

AMA Style

Uji Y, Kashihara K, Kiyama H, Mochizuki S, Akimitsu K, Gomi K. Jasmonic Acid-Induced VQ-Motif-Containing Protein OsVQ13 Influences the OsWRKY45 Signaling Pathway and Grain Size by Associating with OsMPK6 in Rice. International Journal of Molecular Sciences. 2019; 20(12):2917. https://doi.org/10.3390/ijms20122917

Chicago/Turabian Style

Uji, Yuya; Kashihara, Keita; Kiyama, Haruna; Mochizuki, Susumu; Akimitsu, Kazuya; Gomi, Kenji. 2019. "Jasmonic Acid-Induced VQ-Motif-Containing Protein OsVQ13 Influences the OsWRKY45 Signaling Pathway and Grain Size by Associating with OsMPK6 in Rice" Int. J. Mol. Sci. 20, no. 12: 2917. https://doi.org/10.3390/ijms20122917

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