1
|
Li L, Qiu M, Song S, Li Y, Wang T, Yang H, Dong H, Zhang L, Qiu Y, Xia S, Gong M, Wang J, Li L. Loss of function of OsL1 gene cause early flowering in rice under short-day conditions. Mol Breed 2024; 44:17. [PMID: 38371313 PMCID: PMC10873259 DOI: 10.1007/s11032-024-01444-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/27/2023] [Indexed: 02/20/2024]
Abstract
Heading date is one of the important agronomic traits that affects rice yield. In this study, we cloned a new rice B3 family gene, OsL1, which regulates rice heading date. Importantly, osl1-1 and osl1-2, two different types of mutants of OsL1 were created using the gene editing technology CRISPR/Cas9 system and exhibited 4 days earlier heading date than that of the wild type under short-day conditions. Subsequently, the plants overexpressing OsL1, OE-OsL1, showed a 2-day later heading date than the wild type in Changsha and a 5-day later heading date in Lingshui, but there was no significant difference in other yield traits. Moreover, the results of subcellular localization study indicated that OsL1 protein was located in the nucleus and the expression pattern analysis showed that OsL1 gene was expressed in rice roots, stems, leaves, and panicles, and the expression level was higher at the root and weak green panicle. In addition, the OsL1 gene was mainly expressed at night time under short-light conditions. The transcriptomic analysis indicated that OsL1 might be involved in the Hd1-Hd3a pathway function. Together, our results revealed that the cloning and functional analysis of OsL1 can provide new strategy for molecular design breeding of rice with suitable fertility period. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-024-01444-1.
Collapse
Affiliation(s)
- Lei Li
- Longping Branch, College of Biology, Hunan University, Changsha, 410125 China
| | - Mudan Qiu
- College of Agricultural, Hunan Agricultural University, Changsha, 410128 China
| | - Shufeng Song
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| | - Yixing Li
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| | - Tiankang Wang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| | - Hanshu Yang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| | - Hao Dong
- Longping Branch, College of Biology, Hunan University, Changsha, 410125 China
| | - Longhui Zhang
- College of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228 China
| | - Yingxin Qiu
- Longping Branch, College of Biology, Hunan University, Changsha, 410125 China
| | - Siqi Xia
- College of Agricultural, Hunan Agricultural University, Changsha, 410128 China
| | - Mengmeng Gong
- College of Agricultural, Hunan Agricultural University, Changsha, 410128 China
| | - Jianlong Wang
- College of Agricultural, Hunan Agricultural University, Changsha, 410128 China
| | - Li Li
- Longping Branch, College of Biology, Hunan University, Changsha, 410125 China
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| |
Collapse
|