OsABF1 Represses Gibberellin Biosynthesis to Regulate Plant Height and Seed Germination in Rice (Oryza sativa L.)
| العنوان: | OsABF1 Represses Gibberellin Biosynthesis to Regulate Plant Height and Seed Germination in Rice (Oryza sativa L.) |
|---|---|
| المؤلفون: | Huimei Wang, Shen Ni, Guan Li, Zhiyong Li, Shaoqing Tang, Liqun Tang, Xixi Liu, Yazhou Shu, Jian Zhang, Wenfei Xiao, Huayu Xu, Yifeng Wang, Jie-Zheng Ying, Wanning Liu, Xiaohong Tong, Jialing Yao |
| المصدر: | International Journal of Molecular Sciences Volume 22 Issue 22 International Journal of Molecular Sciences, Vol 22, Iss 12220, p 12220 (2021) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | QH301-705.5, gibberellins, Mutant, semi-dwarf, Regulator, rice (Oryza sativa L.), seed germination, Germination, Biology, Article, Catalysis, Inorganic Chemistry, Gene Expression Regulation, Plant, Transcription (biology), bZIP, Gene silencing, Physical and Theoretical Chemistry, Biology (General), Molecular Biology, Psychological repression, QD1-999, Spectroscopy, Plant Proteins, Oryza sativa, Organic Chemistry, food and beverages, Oryza, General Medicine, Computer Science Applications, Cell biology, Chemistry, Basic-Leucine Zipper Transcription Factors, polycomb repression complex, Seeds, Gibberellin |
| الوصف: | Gibberellins (GAs) are diterpenoid phytohormones regulating various aspects of plant growth and development, such as internode elongation and seed germination. Although the GA biosynthesis pathways have been identified, the transcriptional regulatory network of GA homeostasis still remains elusive. Here, we report the functional characterization of a GA-inducible OsABF1 in GA biosynthesis underpinning plant height and seed germination. Overexpression of OsABF1 produced a typical GA-deficient phenotype with semi-dwarf and retarded seed germination. Meanwhile, the phenotypes could be rescued by exogenous GA3, suggesting that OsABF1 is a key regulator of GA homeostasis. OsABF1 could directly suppress the transcription of green revolution gene SD1, thus reducing the endogenous GA level in rice. Moreover, OsABF1 interacts with and transcriptionally antagonizes to the polycomb repression complex component OsEMF2b, whose mutant showed as similar but more severe phenotype to OsABF1 overexpression lines. It is suggested that OsABF1 recruits RRC2-mediated H3K27me3 deposition on the SD1 promoter, thus epigenetically silencing SD1 to maintain the GA homeostasis for growth and seed germination. These findings shed new insight into the functions of OsABF1 and regulatory mechanism underlying GA homeostasis in rice. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1422-0067 |
| DOI: | 10.3390/ijms222212220 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2a19a700cfa106a0f1e88ecc8f75228Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d2a19a700cfa106a0f1e88ecc8f75228 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14220067 |
|---|---|
| DOI: | 10.3390/ijms222212220 |