Update info.Tools - Reference - Detail
Reference Detail
| Reference | ||
|---|---|---|
| Author | Zheng J., Hong K., Zeng L., Wang L., Kang S., Qu M., Dai J., Zou L., Zhu L., Tang Z., Meng X., Wang B., Hu J., Zeng D., Zhao Y., Cui P., Wang Q., Qian Q., Wang Y., Li J., Xiong G. | |
| Title | Karrikin Signaling Acts Parallel to and Additively with Strigolactone Signaling to Regulate Rice Mesocotyl Elongation in Darkness. | |
|
Abstract: 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 (<i>Oryza sativa</i>) mesocotyl elongation in the dark. Here, we report that a karrikin signaling complex, DWARF14-LIKE (D14L)-DWARF3 (D3)-<i>O. sativa</i> 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 SCFD3 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 <i>OsSMAX1</i> promoted mesocotyl elongation in the dark, whereas knockout of <i>OsSMAX1</i> suppressed the elongated-mesocotyl phenotypes of <i>D14L</i> and <i>D3</i> OsSMAX1 localizes to the nucleus and interacts with TOPLESS-RELATED PROTEINs, regulating downstream gene expression. Moreover, we showed that the GR24 enantiomers GR245DS and GR24 <i>ent-</i>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. |
||
| Journal | Plant Cell | |
| Country | China | |
| Volume | 32(9) | |
| Pages | 2780-2805 | |
| Year | 2020 | |
| PubMed ID | 32665307 | |
| PubMed Central ID | 7474294 | |
| DOI | 10.1105/tpc.20.00123 | |
| URL | - | |
| Relation | ||
| Gene | ASP1 BIN2 D10 D14 D14L3 D17 D3 D53 D53L EG1 EXPA1 KAI2 KUF1 LP2 MADS58 PIP2;8 SMAX1 STH1 TCP9 THION13 WD40-12 WD40-66 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
|
Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
