OsRAV1 Regulates Seed Vigor and Salt Tolerance During Germination in Rice

Autor: Yingbo Gao, Xinyi Zhao, Xin Liu, Chang Liu, Kunming Zhang, Xiaoxiang Zhang, Juan Zhou, Guichun Dong, Youping Wang, Jianye Huang, Zefeng Yang, Yong Zhou, Youli Yao
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Rice, Vol 17, Iss 1, Pp 1-15 (2024)
Druh dokumentu: article
ISSN: 1939-8425
1939-8433
DOI: 10.1186/s12284-024-00734-8
Popis: Abstract 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.
Databáze: Directory of Open Access Journals
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