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Jasmonic Acid in Plants

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 5186

Special Issue Editor


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Guest Editor
Faculty of Agriculture, Kagawa University, Miki, Kagawa 761-0795, Japan
Interests: plants; rice; phytohormones; plant pathology; plant volatile; abiotic response; hormonal crosstalk; signal transduction; gene expression; gene regulatory network
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Special Issue Information

Dear Colleagues,

The plant hormone jasmonic acid (JA) and its derivative, an amino acid conjugate of JA (jasmonoyl isoleucine: JA-Ile), are signaling compounds involved in the regulation of defense and development in plants. JA was recognized as a stress hormone that regulates plant response to biotic stresses such as herbivore and pathogen attacks, as well as abiotic stresses such as  wounding and ultraviolet radiation. The number of articles studying on JA is dramatically increasing from 1990s. In 2000s, some critical studies using Arabidopsis mutants have progressed remarkably in the understanding of the importance of the JA in the life cycle of plants. The discovery of main regulators such as JA receptor (COI1), repressors (JAZs), and a transcription factor (MYC2) facilitates further efforts to understand JA signaling pathway in many plant species.  The diligent studies have revealed that JA is directly involved in many physiological processes, including stamen growth, leaf senescence, and root growth. Furthermore, JA regulates production of various metabolites such as phytoalexins and terpenoids. However, there is so much more to be learned about the JA signaling in plants. This Special Issue calls for original research and reviews and perspectives that address the progress and current knowledge in the research on JA in various plant species.

Prof. Dr. Kenji Gomi 
Guest Editor

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Keywords

  • JA biosynthesis
  • JA signaling pathway
  • transcriptional regulator
  • gene expression
  • hormonal crosstalk
  • abiotic response
  • biotic response
  • plant physiology
  • plant development

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Published Papers (2 papers)

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14 pages, 3241 KiB  
Article
Jasmonic Acid-Induced β-Cyclocitral Confers Resistance to Bacterial Blight and Negatively Affects Abscisic Acid Biosynthesis in Rice
by Shiduku Taniguchi, Aya Takeda, Masaki Kiryu and Kenji Gomi
Int. J. Mol. Sci. 2023, 24(2), 1704; https://doi.org/10.3390/ijms24021704 - 15 Jan 2023
Cited by 5 | Viewed by 2452
Abstract
Jasmonic acid (JA) regulates the production of several plant volatiles that are involved in plant defense mechanisms. In this study, we report that the JA-responsive volatile apocarotenoid, β-cyclocitral (β-cyc), negatively affects abscisic acid (ABA) biosynthesis and induces a defense response against Xanthomonas oryzae [...] Read more.
Jasmonic acid (JA) regulates the production of several plant volatiles that are involved in plant defense mechanisms. In this study, we report that the JA-responsive volatile apocarotenoid, β-cyclocitral (β-cyc), negatively affects abscisic acid (ABA) biosynthesis and induces a defense response against Xanthomonas oryzae pv. oryzae (Xoo), which causes bacterial blight in rice (Oryza sativa L.). JA-induced accumulation of β-cyc was regulated by OsJAZ8, a repressor of JA signaling in rice. Treatment with β-cyc induced resistance against Xoo and upregulated the expression of defense-related genes in rice. Conversely, the expression of ABA-responsive genes, including ABA-biosynthesis genes, was downregulated by JA and β-cyc treatment, resulting in a decrease in ABA levels in rice. β-cyc did not inhibit the ABA-dependent interactions between OsPYL/RCAR5 and OsPP2C49 in yeast cells. Furthermore, we revealed that JA-responsive rice carotenoid cleavage dioxygenase 4b (OsCCD4b) was localized in the chloroplast and produced β-cyc both in vitro and in planta. These results suggest that β-cyc plays an important role in the JA-mediated resistance against Xoo in rice. Full article
(This article belongs to the Special Issue Jasmonic Acid in Plants)
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20 pages, 15994 KiB  
Article
Genome-Wide Identification, Evolution, and Expression Pattern Analysis of the GATA Gene Family in Tartary Buckwheat (Fagopyrum tataricum)
by Xin Yao, Meiliang Zhou, Jingjun Ruan, Ailing He, Chao Ma, Weijiao Wu, Dili Lai, Yu Fan, Anjing Gao, Wenfeng Weng and Jianping Cheng
Int. J. Mol. Sci. 2022, 23(20), 12434; https://doi.org/10.3390/ijms232012434 - 17 Oct 2022
Cited by 10 | Viewed by 2062
Abstract
GATA is a transcription factor that exerts a vital function in plant growth and development, physiological metabolism, and environmental responses. However, the GATA gene family has rarely been studied in Tartary buckwheat since the completion of its genome. This study used bioinformatics methods [...] Read more.
GATA is a transcription factor that exerts a vital function in plant growth and development, physiological metabolism, and environmental responses. However, the GATA gene family has rarely been studied in Tartary buckwheat since the completion of its genome. This study used bioinformatics methods to identify GATA genes of Tartary buckwheat and to analyze their subfamily classification, structural composition, and developmental evolution, as well as to discuss the expression patterns of FtGATA genes in different subfamilies. The twenty-eight identified FtGATA genes in the Tartary buckwheat genome were divided into four subfamilies and distributed on eight chromosomes. One pair of tandem repeat genes and eight pairs of fragments were found in chromosome mapping. Spatiotemporal expression patterns of eight FtGATA genes in different subfamilies indicated that the FtGATA gene family has regulatory roles in tissue specificity, fruit development, abiotic stress, and hormonal responses. This study creates a theoretical and scientific foundation for further research on the evolutionary relationship and biological function of FtGATA. Full article
(This article belongs to the Special Issue Jasmonic Acid in Plants)
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