Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages
The development of high-yielding wheat genotypes containing micronutrient-dense grains are the main priorities of biofortification programs. At the International Maize and Wheat Improvement Center, breeders have successfully crossed high zinc progenitors including synthetic hexaploid wheat, T. dicoc...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/171242 |
| _version_ | 1855540011717361664 |
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| author | Cu, Suong T. Guild, Georgia E. Nicolson, Alison Velu, Govindan Singh, Ravi P. Stangoulis, James |
| author_browse | Cu, Suong T. Guild, Georgia E. Nicolson, Alison Singh, Ravi P. Stangoulis, James Velu, Govindan |
| author_facet | Cu, Suong T. Guild, Georgia E. Nicolson, Alison Velu, Govindan Singh, Ravi P. Stangoulis, James |
| author_sort | Cu, Suong T. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The development of high-yielding wheat genotypes containing micronutrient-dense grains are the main priorities of biofortification programs. At the International Maize and Wheat Improvement Center, breeders have successfully crossed high zinc progenitors including synthetic hexaploid wheat, T. dicoccum, T. spelta and landraces to generate high-zinc varieties. In this study, we report a genome-wide association using a wheat diversity panel to dissect the genetics controlling zinc, iron, copper, manganese and phosphorus concentrations in the grain and rachis during grain development and at physiological maturity. Significant marker-trait associations (MTAs) were identified for each nutrient using multi-locus mixed model methodologies. For mature grain, markers that showed significant pleiotropic effects were found on chromosomes 1A, 3B and 5B, of which those on chromosome 5B at ∼95.5 cM were consistent over two growing seasons. Co-located MTAs were identified for the nutrient concentrations in developing grain, rachis and mature grain on multiple chromosomes. The identified genomic regions included putative candidate genes involved in metal uptake and transport and storage protein processing. These findings add to our understanding of the genetics of the five important nutrients in wheat grain and provide information on genetic markers for selecting high micronutrient genotypes. |
| format | Journal Article |
| id | CGSpace171242 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1712422025-02-02T07:20:21Z Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages Cu, Suong T. Guild, Georgia E. Nicolson, Alison Velu, Govindan Singh, Ravi P. Stangoulis, James genotypes iron zinc manganese copper phosphorus wheat biofortification breeding genetics trace elements genetic markers The development of high-yielding wheat genotypes containing micronutrient-dense grains are the main priorities of biofortification programs. At the International Maize and Wheat Improvement Center, breeders have successfully crossed high zinc progenitors including synthetic hexaploid wheat, T. dicoccum, T. spelta and landraces to generate high-zinc varieties. In this study, we report a genome-wide association using a wheat diversity panel to dissect the genetics controlling zinc, iron, copper, manganese and phosphorus concentrations in the grain and rachis during grain development and at physiological maturity. Significant marker-trait associations (MTAs) were identified for each nutrient using multi-locus mixed model methodologies. For mature grain, markers that showed significant pleiotropic effects were found on chromosomes 1A, 3B and 5B, of which those on chromosome 5B at ∼95.5 cM were consistent over two growing seasons. Co-located MTAs were identified for the nutrient concentrations in developing grain, rachis and mature grain on multiple chromosomes. The identified genomic regions included putative candidate genes involved in metal uptake and transport and storage protein processing. These findings add to our understanding of the genetics of the five important nutrients in wheat grain and provide information on genetic markers for selecting high micronutrient genotypes. 2020-02 2025-01-29T12:57:54Z 2025-01-29T12:57:54Z Journal Article https://hdl.handle.net/10568/171242 en Open Access Elsevier Cu, Suong T.; Guild, Georgia; Nicolson, Alison; Velu, Govindan; Singh, Ravi; and Stangoulis, James. 2020. Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages. Plant Science 291(February 2020): 110338. https://doi.org/10.1016/j.plantsci.2019.110338 |
| spellingShingle | genotypes iron zinc manganese copper phosphorus wheat biofortification breeding genetics trace elements genetic markers Cu, Suong T. Guild, Georgia E. Nicolson, Alison Velu, Govindan Singh, Ravi P. Stangoulis, James Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages |
| title | Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages |
| title_full | Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages |
| title_fullStr | Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages |
| title_full_unstemmed | Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages |
| title_short | Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages |
| title_sort | genetic dissection of zinc iron copper manganese and phosphorus in wheat triticum aestivum l grain and rachis at two developmental stages |
| topic | genotypes iron zinc manganese copper phosphorus wheat biofortification breeding genetics trace elements genetic markers |
| url | https://hdl.handle.net/10568/171242 |
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