OsRAV1 Regulates Seed Vigor and Salt Tolerance During Germination in Rice
Seed vigor is a complex trait encompassing seed germination, seedling emergence, growth, seed longevity, and stress tolerance, all are crucial for direct seeding in rice. Here, we report that the AP2/ERF transcription factor OsRAV1 (RELATED TO ABI3 AND VP1) positively regulates seed germination, vigor, and salt tolerance. Additionally, OsRAV1 was differently expressed in embryo and endosperm, with the OsRAV1 localized in the nucleus. Transcriptomic analysis revealed that OsRAV1 modulates seed vigor through plant hormone signal transduction and phenylpropanoid biosynthesis during germination. Haplotype analysis showed that rice varieties carrying Hap3 displayed enhanced salt tolerance during seed germination. These findings suggest that OsRAV1 is a potential target in breeding rice varieties with high seed vigor suitable for direct seeding cultivation.
Authors
- Kunming Zhang (ORCID: https://orcid.org/0000-0001-7088-8154)
- Zefeng Yang (ORCID: https://orcid.org/0000-0002-3465-8594)
- Guichun Dong
- Youping Wang (ORCID: https://orcid.org/0000-0001-6832-8561)
- Xiaoxiang Zhang (ORCID: https://orcid.org/0000-0002-7032-7338)
- Jianye Huang
- Xinyi Zhao (ORCID: https://orcid.org/0000-0002-9766-8925)
- Xin Liu (ORCID: https://orcid.org/0000-0003-1290-1984)
- Juan Zhou (ORCID: https://orcid.org/0009-0007-4111-2403)
- Yong Zhou (ORCID: https://orcid.org/0000-0001-8983-7787)
- Yingbo Gao (ORCID: https://orcid.org/0000-0002-7024-4436)
- Youli Yao (ORCID: https://orcid.org/0000-0003-3803-011X)
- Chang Liu (ORCID: https://orcid.org/0000-0003-0650-1773)
Institutions
- Yangzhou University (CN)
Publication Details
- Journal
- Rice
- Published
- 2024-09-02
- DOI
- https://doi.org/10.1186/s12284-024-00734-8
- Citations
- 14
- Primary Topic
- GABA and Rice Research
- Type
- article
- Field-Weighted Citation Impact
- 8.39
Funders
- National Natural Science Foundation of China
- Jiangsu Provincial Key Research and Development Program