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Liu Y, Chen Y, Yang Y, Zhang Q, Fu B, Cai J, Guo W, Shi L, Wu J, Chen Y. A thorough screening based on QTLs controlling zinc and copper accumulation in the grain of different wheat genotypes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:15043-15054. [PMID: 33230790 DOI: 10.1007/s11356-020-11690-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 11/16/2020] [Indexed: 06/11/2023]
Abstract
Excess trace metals may cause damage to human health due to the consumption of food grain grown in contaminated soils. This study was designed to understand the genetic mechanisms of copper (Cu) and zinc (Zn) accumulation in wheat grain under stressed environments. The differences of Cu/Zn contents in the grain among 246 wheat varieties were analyzed, and the wheat varieties with low or high accumulation of Cu and Zn in the safe range were also screened out. The accumulation of Cu and Zn in grains of "Chushanbao" was lowest, which could be used as a novel germplasm for wheat breeding under heavy metal stress. We found that Cu contents of wheat grain were significantly and positively correlated with Zn. The quantitative trait loci (QTLs) for grain Cu content (GCuC) and grain Zn content (GZnC) were detected by genome-wide association study (GWAS). Twenty-three loci affecting GCuC were identified on chromosomes 1A, 1D, 2A, 2B, 2D, 3A, 3B, 3D, 4A, 4B 4D, 5A, 6D, 7A, and 7B, explaining 2.6-5.8% of the phenotypic variation. Sixteen loci associated with the GZnC on 11 different chromosomes 1B, 2B, 2D, 3A, 3D, 4A, 4B, 5A, 5D, 6B, and 7D were detected, which could explain 2.7~6.6% of phenotypic variance. We also determined five associated loci on chromosomes 2B, 2D, 3A, 4B, and 5A were in pleiotropic regions affecting both GCuC and GZnC. This study would help in better understanding the molecular basis of Cu/Zn accumulation in wheat grain, and the associated markers may be useful for marker-assisted selection (MAS) breeding program.
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Affiliation(s)
- Ying Liu
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | | | - Yang Yang
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Qiaofeng Zhang
- Provincial Key Laboratory of Agrobiology, The Jiangsu Provincial Infrastructure for Conservation and Utilization of Agricultural Germplasm, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Bisheng Fu
- Provincial Key Laboratory of Agrobiology, The Jiangsu Provincial Infrastructure for Conservation and Utilization of Agricultural Germplasm, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Jin Cai
- Provincial Key Laboratory of Agrobiology, The Jiangsu Provincial Infrastructure for Conservation and Utilization of Agricultural Germplasm, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Wei Guo
- Provincial Key Laboratory of Agrobiology, The Jiangsu Provincial Infrastructure for Conservation and Utilization of Agricultural Germplasm, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Liang Shi
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Jizhong Wu
- Provincial Key Laboratory of Agrobiology, The Jiangsu Provincial Infrastructure for Conservation and Utilization of Agricultural Germplasm, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China.
| | - Yahua Chen
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
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