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Li R, Song Y, Wang X, Zheng C, Liu B, Zhang H, Ke J, Wu X, Wu L, Yang R, Jiang M. Os NAC5 orchestrates OsABI5 to fine-tune cold tolerance in rice. J Integr Plant Biol 2024; 66:660-682. [PMID: 37968901 DOI: 10.1111/jipb.13585] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/14/2023] [Indexed: 11/17/2023]
Abstract
Due to its tropical origins, rice (Oryza sativa) is susceptible to cold stress, which poses severe threats to production. OsNAC5, a NAC-type transcription factor, participates in the cold stress response of rice, but the detailed mechanisms remain poorly understood. Here, we demonstrate that OsNAC5 positively regulates cold tolerance at germination and in seedlings by directly activating the expression of ABSCISIC ACID INSENSITIVE 5 (OsABI5). Haplotype analysis indicated that single nucleotide polymorphisms in a NAC-binding site in the OsABI5 promoter are strongly associated with cold tolerance. OsNAC5 also enhanced OsABI5 stability, thus regulating the expression of cold-responsive (COR) genes, enabling fine-tuned control of OsABI5 action for rapid, precise plant responses to cold stress. DNA affinity purification sequencing coupled with transcriptome deep sequencing identified several OsABI5 target genes involved in COR expression, including DEHYDRATION-RESPONSIVE ELEMENT BINDING FACTOR 1A (OsDREB1A), OsMYB20, and PEROXIDASE 70 (OsPRX70). In vivo and in vitro analyses suggested that OsABI5 positively regulates COR gene transcription, with marked COR upregulation in OsNAC5-overexpressing lines and downregulation in osnac5 and/or osabi5 knockout mutants. This study extends our understanding of cold tolerance regulation via OsNAC5 through the OsABI5-CORs transcription module, which may be used to ameliorate cold tolerance in rice via advanced breeding.
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Affiliation(s)
- Ruiqing Li
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, China
| | - Yue Song
- Hainan Institute, Yazhou Bay Sci-Tech City, Zhejiang University, Sanya, 572025, China
- National Key Laboratory of Rice Biology, Advanced Seed Institute, Zhejiang University, Hangzhou, 311225, China
| | - Xueqiang Wang
- Hainan Institute, Yazhou Bay Sci-Tech City, Zhejiang University, Sanya, 572025, China
- National Key Laboratory of Rice Biology, Advanced Seed Institute, Zhejiang University, Hangzhou, 311225, China
| | - Chenfan Zheng
- Hainan Institute, Yazhou Bay Sci-Tech City, Zhejiang University, Sanya, 572025, China
- National Key Laboratory of Rice Biology, Advanced Seed Institute, Zhejiang University, Hangzhou, 311225, China
| | - Bo Liu
- Hainan Institute, Yazhou Bay Sci-Tech City, Zhejiang University, Sanya, 572025, China
- National Key Laboratory of Rice Biology, Advanced Seed Institute, Zhejiang University, Hangzhou, 311225, China
| | - Huali Zhang
- State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 311401, China
| | - Jian Ke
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, China
| | - Xuejing Wu
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, China
| | - Liquan Wu
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, China
| | - Ruifang Yang
- Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain and Oil Crops (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Crop Breeding and Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Meng Jiang
- Hainan Institute, Yazhou Bay Sci-Tech City, Zhejiang University, Sanya, 572025, China
- National Key Laboratory of Rice Biology, Advanced Seed Institute, Zhejiang University, Hangzhou, 311225, China
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