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Huang X, Gao F, Zhou P, Ma C, Tan W, Ma Y, Li M, Ni Z, Shi T, Hayat F, Li Y, Gao Z. Allelic variation of PmCBF03 contributes to the altitude and temperature adaptability in Japanese apricot (Prunus mume Sieb. et Zucc.). PLANT, CELL & ENVIRONMENT 2024; 47:1379-1396. [PMID: 38221869 DOI: 10.1111/pce.14813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/26/2023] [Accepted: 12/31/2023] [Indexed: 01/16/2024]
Abstract
Japanese apricot is an important subtropical deciduous fruit tree in China, widely distributed in different altitude areas. How does it adapt to the different temperature environments in these areas? In this study, we identified a low-temperature transcription factor PmCBF03 on chromosome 7 through adaptive analysis of populations at different altitudes, which has an early termination single nucleotide polymorphism mutation. There were two different types of variation, PmCBF03A type in high-altitude areas and PmCBF03T type in low-altitude areas. PmCBF03A gene increased the survival rate, Fv/Fm values, antioxidant enzyme activity, and expression levels of antioxidant enzyme genes, and reducing electrolyte leakage and accumulation of reactive oxygen species in transgenic Arabidopsis under low temperature and freezing stress. Simultaneously, PmCBF03A gene promoted the dormancy of transgenic Arabidopsis seeds than wild-type. Biochemical analysis demonstrated that PmCBF03A directly bound to the DRE/CRT element in the promoters of the PmCOR413, PmDAM6 and PmABI5 genes, promoting their transcription and enhanced the cold resistance and dormancy of the overexpressing PmCBF03A lines. While PmCBF03T gene is unable to bind to the promoters of PmDAM6 and PmABI5 genes, leading to early release of dormancy to adapt to the problem of insufficient chilling requirement in low-altitude areas.
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Affiliation(s)
- Xiao Huang
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Feng Gao
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Pengyu Zhou
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Chengdong Ma
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Wei Tan
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yufan Ma
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Minglu Li
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Zhaojun Ni
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Ting Shi
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Faisal Hayat
- Department of Pomology, College of Horticulture, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Yongping Li
- Department of Special Fruit Tree Germplasm Resources, Yunnan Green Food Development Center, Kunming, Yunnan, China
| | - Zhihong Gao
- Fruit Tree Biotechnology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
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