A molecular framework for signaling crosstalk between jasmonate and ethylene in anthocyanin biosynthesis, trichome development, and defenses against insect herbivores in Arabidopsis
العنوان: | A molecular framework for signaling crosstalk between jasmonate and ethylene in anthocyanin biosynthesis, trichome development, and defenses against insect herbivores in Arabidopsis |
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المؤلفون: | Susheng Song, Bei Liu, Junqiao Song, Shihai Pang, Tianxue Song, Shang Gao, Yue Zhang, Huang Huang, Tiancong Qi |
المصدر: | Journal of Integrative Plant Biology. 64:1770-1788 |
بيانات النشر: | Wiley, 2022. |
سنة النشر: | 2022 |
مصطلحات موضوعية: | Insecta, Arabidopsis Proteins, Arabidopsis, Cyclopentanes, Trichomes, Plant Science, Ethylenes, Biochemistry, General Biochemistry, Genetics and Molecular Biology, Anthocyanins, Gene Expression Regulation, Plant, Basic Helix-Loop-Helix Transcription Factors, Animals, Herbivory, Oxylipins |
الوصف: | The phytohormones ethylene (ET) and jasmonate (JA) regulate plant development, growth, and defense responses; however, the molecular basis for their signaling crosstalk is unclear. Here, we show that JA-ZIM-domain (JAZ) proteins, which repress JA signaling, repress trichome initiation/branching and anthocyanin accumulation, and inhibit the transcriptional activity of the basic helix-loop-helix (bHLH)-MYB members (GLABRA3 (GL3)-GL1 and TRANSPARENT TESTA 8 (TT8)-MYB75) of WD-repeat/bHLH/MYB (WBM) complexes. The ET-stabilized transcription factors ETHYLENE-INSENSITIVE3 (EIN3) and EIN3-LIKE1 (EIL1) were found to bind to several members of WBM complexes, including GL3, ENHANCER OF GLABRA3 (EGL3), TT8, GL1, MYB75, and TRANSPARENT TESTA GLABRA1 (TTG1). This binding repressed the transcriptional activity of the bHLH-MYB proteins and inhibited anthocyanin accumulation, trichome formation, and defenses against insect herbivores while promoting root hair formation. Conversely, the JA-activated bHLH members GL3, EGL3, and TT8 of WBM complexes were able to interact with and attenuate the transcriptional activity of EIN3/EIL1 at the HOOKLESS1 promoter, and their overexpression inhibited apical hook formation. Thus, this study demonstrates a molecular framework for signaling crosstalk between JA and ET in plant development, secondary metabolism, and defense responses. |
تدمد: | 1744-7909 1672-9072 |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43c9b8cdd89b79f7e59bc84bc2a075d6 https://doi.org/10.1111/jipb.13319 |
حقوق: | CLOSED |
رقم الأكسشن: | edsair.doi.dedup.....43c9b8cdd89b79f7e59bc84bc2a075d6 |
قاعدة البيانات: | OpenAIRE |
تدمد: | 17447909 16729072 |
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