Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil
The quality of edible seeds for human and animal nutrition is crucially dependent on high zinc (Zn) and iron (Fe) seed concentrations. The micronutrient bioavailability is strongly reduced by seed phytate that forms complexes with seed cations. Superior genotypes with increased seed Zn concentration...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2016-07-01
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| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpls.2016.01070/full |
| _version_ | 1828331423304515584 |
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| author | Xiaochao Chen Lixing Yuan Uwe Ludewig |
| author_facet | Xiaochao Chen Lixing Yuan Uwe Ludewig |
| author_sort | Xiaochao Chen |
| collection | DOAJ |
| description | The quality of edible seeds for human and animal nutrition is crucially dependent on high zinc (Zn) and iron (Fe) seed concentrations. The micronutrient bioavailability is strongly reduced by seed phytate that forms complexes with seed cations. Superior genotypes with increased seed Zn concentrations had been identified, but low micronutrient seed levels often prevail when the plants are grown in Zn-deficient soils, which are globally widespread and correlate with human Zn-deficiency. Here, seed Zn concentrations of Arabidopsis accessions grown in Zn-deficient and Zn-amended conditions were measured together with seed Fe and manganese (Mn), in a panel of 108 accessions. By applying genome-wide association, de novo candidate genes potentially involved in the seed micronutrient accumulation were identified. However, a candidate inositol 1,3,4-trisphosphate 5/6-kinase 3 gene (ITPK3), located close to a significant nucleotide polymorphism associated with relative Zn seed concentrations, was dispensable for seed micronutrients accumulation in Col-0. Loss of this gene in itpk3-1 did neither affect phytate seed levels, nor seed Zn, Fe and Mn. It is concluded that large natural variance of micronutrient seed levels is identified in the population and several accessions maintain high seed Zn despite growth in Zn-deficient conditions. |
| first_indexed | 2024-04-13T20:52:27Z |
| format | Article |
| id | doaj.art-3cf0c1041a0546bbad4b2f41d4551517 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-13T20:52:27Z |
| publishDate | 2016-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-3cf0c1041a0546bbad4b2f41d45515172022-12-22T02:30:26ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2016-07-01710.3389/fpls.2016.01070198053Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soilXiaochao Chen0Lixing Yuan1Uwe Ludewig2University of HohenheimChina Agricultural UniversityUniversity of HohenheimThe quality of edible seeds for human and animal nutrition is crucially dependent on high zinc (Zn) and iron (Fe) seed concentrations. The micronutrient bioavailability is strongly reduced by seed phytate that forms complexes with seed cations. Superior genotypes with increased seed Zn concentrations had been identified, but low micronutrient seed levels often prevail when the plants are grown in Zn-deficient soils, which are globally widespread and correlate with human Zn-deficiency. Here, seed Zn concentrations of Arabidopsis accessions grown in Zn-deficient and Zn-amended conditions were measured together with seed Fe and manganese (Mn), in a panel of 108 accessions. By applying genome-wide association, de novo candidate genes potentially involved in the seed micronutrient accumulation were identified. However, a candidate inositol 1,3,4-trisphosphate 5/6-kinase 3 gene (ITPK3), located close to a significant nucleotide polymorphism associated with relative Zn seed concentrations, was dispensable for seed micronutrients accumulation in Col-0. Loss of this gene in itpk3-1 did neither affect phytate seed levels, nor seed Zn, Fe and Mn. It is concluded that large natural variance of micronutrient seed levels is identified in the population and several accessions maintain high seed Zn despite growth in Zn-deficient conditions.http://journal.frontiersin.org/Journal/10.3389/fpls.2016.01070/fullseednatural variationgenome-wide associationzinc deficiencymicronutrient |
| spellingShingle | Xiaochao Chen Lixing Yuan Uwe Ludewig Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil Frontiers in Plant Science seed natural variation genome-wide association zinc deficiency micronutrient |
| title | Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil |
| title_full | Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil |
| title_fullStr | Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil |
| title_full_unstemmed | Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil |
| title_short | Natural genetic variation of seed micronutrients of Arabidopsis thaliana grown in zinc-deficient and zinc-amended soil |
| title_sort | natural genetic variation of seed micronutrients of arabidopsis thaliana grown in zinc deficient and zinc amended soil |
| topic | seed natural variation genome-wide association zinc deficiency micronutrient |
| url | http://journal.frontiersin.org/Journal/10.3389/fpls.2016.01070/full |
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