Karrikin Signaling Acts Parallel to and Additively with Strigolactone Signaling to Regulate Rice Mesocotyl Elongation in Darkness
| العنوان: | Karrikin Signaling Acts Parallel to and Additively with Strigolactone Signaling to Regulate Rice Mesocotyl Elongation in Darkness |
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| المؤلفون: | Jiayang Li, Qian Qian, Shujing Kang, Jiarong Dai, Linyuan Zou, Dali Zeng, Jianshu Zheng, Minghao Qu, Lixin Zhu, Zhanpeng Tang, Jiang Hu, Peng Cui, Kai Hong, Guosheng Xiong, Quan Wang, Bing Wang, Xiangbing Meng, Lei Wang, Yonghui Zhao, Longjun Zeng, Yonghong Wang |
| المصدر: | Plant Cell |
| بيانات النشر: | Oxford University Press (OUP), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Strigolactone, Plant Science, Biology, 01 natural sciences, Lactones, 03 medical and health sciences, Ubiquitin, Gene Expression Regulation, Plant, Gene expression, Furans, Research Articles, Plant Proteins, Pyrans, Regulation of gene expression, Ubiquitination, food and beverages, Oryza, Stereoisomerism, Cell Biology, Darkness, Plants, Genetically Modified, Cell biology, Karrikin, Ubiquitin ligase, 030104 developmental biology, biology.protein, Elongation, Signal transduction, Heterocyclic Compounds, 3-Ring, Plant Shoots, Signal Transduction, 010606 plant biology & botany |
| الوصف: | Seedling emergence in monocots depends mainly on mesocotyl elongation, requiring coordination between developmental signals and environmental stimuli. Strigolactones (SLs) and karrikins are butenolide compounds that regulate various developmental processes; both are able to negatively regulate rice (Oryza sativa) mesocotyl elongation in the dark. Here, we report that a karrikin signaling complex, DWARF14-LIKE (D14L)-DWARF3 (D3)-O. sativa SUPPRESSOR OF MAX2 1 (OsSMAX1) mediates the regulation of rice mesocotyl elongation in the dark. We demonstrate that D14L recognizes the karrikin signal and recruits the SCF(D3) ubiquitin ligase for the ubiquitination and degradation of OsSMAX1, mirroring the SL-induced and D14- and D3-dependent ubiquitination and degradation of D53. Overexpression of OsSMAX1 promoted mesocotyl elongation in the dark, whereas knockout of OsSMAX1 suppressed the elongated-mesocotyl phenotypes of d14l and d3. OsSMAX1 localizes to the nucleus and interacts with TOPLESS-RELATED PROTEINs, regulating downstream gene expression. Moreover, we showed that the GR24 enantiomers GR24(5DS) and GR24(ent-5DS) specifically inhibit mesocotyl elongation and regulate downstream gene expression in a D14- and D14L-dependent manner, respectively. Our work revealed that karrikin and SL signaling play parallel and additive roles in modulating downstream gene expression and negatively regulating mesocotyl elongation in the dark. |
| تدمد: | 1532-298X 1040-4651 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24d74498b2b1f67555336be69ab26a44 https://doi.org/10.1105/tpc.20.00123 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....24d74498b2b1f67555336be69ab26a44 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1532298X 10404651 |
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