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| OST1 Kinase Modulates Freezing Tolerance by Enhancing ICE1 Stability in Arabidopsis | |
| Ding, YL; Li, H; Zhang, XY; Xie, Q; Gong, ZZ; Yang, SH | |
| 2015 | |
| Source Publication | DEVELOPMENTAL CELL
 |
| ISSN | 1534-5807 |
| Volume | 32Issue:3Pages:278-289 |
| Abstract | Cold stress is a major environmental factor that limits plant growth and development. The C-repeat-binding factor (CBF)-dependent cold signaling pathway is extensively studied in Arabidopsis; however, the specific protein kinases involved in this pathway remain elusive. Here we report that OST1 (OPEN STOMATA 1), a well-known Ser/Thr protein kinase in ABA signaling, acts upstream of CBFs to positively regulate freezing tolerance. The ost1 mutants show freezing hypersensitivity, whereas transgenic plants overexpressing OST1 exhibit enhanced freezing tolerance. The OST1 kinase is activated by cold stress. Moreover, OST1 interacts with both the transcription factor ICE1 and the E3 ligase HOS1 in the CBF pathway. Cold-activated OST1 phosphorylates ICE1 and enhances its stability and transcriptional activity. Meanwhile, OST1 interferes with the interaction between HOS1 and ICE1, thus suppressing HOS1-mediated ICE1 degradation under cold stress. Our results thus uncover the unexpected roles of OST1 in modulating CBF-dependent cold signaling in Arabidopsis. |
| Keyword | 2c Protein Phosphatases Confers Cold Tolerance Abscisic-acid Gene-expression Signal-transduction Low-temperature Transcription Factors Stomatal Closure Root-growth Stress |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/9101 |
| Collection | 文献共享 |
| Recommended Citation GB/T 7714 | Ding, YL,Li, H,Zhang, XY,et al. OST1 Kinase Modulates Freezing Tolerance by Enhancing ICE1 Stability in Arabidopsis[J]. DEVELOPMENTAL CELL,2015,32(3):278-289. |
| APA | Ding, YL,Li, H,Zhang, XY,Xie, Q,Gong, ZZ,&Yang, SH.(2015).OST1 Kinase Modulates Freezing Tolerance by Enhancing ICE1 Stability in Arabidopsis.DEVELOPMENTAL CELL,32(3),278-289. |
| MLA | Ding, YL,et al."OST1 Kinase Modulates Freezing Tolerance by Enhancing ICE1 Stability in Arabidopsis".DEVELOPMENTAL CELL 32.3(2015):278-289. |
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| File Name/Size | DocType | Version | Access | License | ||
| OST1 Kinase Modulate（4762KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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