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Chen X, Yuan L, Ludewig U. Natural Genetic Variation of Seed Micronutrients of Arabidopsis thaliana Grown in Zinc-Deficient and Zinc-Amended Soil. Front Plant Sci. 2016;7:1070doi: 10.3389/fpls.2016.01070.
Chen, X., Yuan, L., & Ludewig, U. (2016). Natural Genetic Variation of Seed Micronutrients of Arabidopsis thaliana Grown in Zinc-Deficient and Zinc-Amended Soil. Frontiers in plant science, 71070. https://doi.org/10.3389/fpls.2016.01070
Chen, Xiaochao, et al. "Natural Genetic Variation of Seed Micronutrients of Arabidopsis thaliana Grown in Zinc-Deficient and Zinc-Amended Soil." Frontiers in plant science vol. 7 (2016): 1070. doi: https://doi.org/10.3389/fpls.2016.01070
Chen X, Yuan L, Ludewig U. Natural Genetic Variation of Seed Micronutrients of Arabidopsis thaliana Grown in Zinc-Deficient and Zinc-Amended Soil. Front Plant Sci. 2016 Jul 26;7:1070. doi: 10.3389/fpls.2016.01070. eCollection 2016. PMID: 27507976; PMCID: PMC4960235.
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Front Plant Sci. 2016 Jul 26;7:1070. doi: 10.3389/fpls.2016.01070. eCollection 2016.

Natural Genetic Variation of Seed Micronutrients of Arabidopsis thaliana Grown in Zinc-Deficient and Zinc-Amended Soil.

Frontiers in plant science

Xiaochao Chen, Lixing Yuan, Uwe Ludewig

Affiliations

  1. Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart Germany.
  2. Key Laboratory of Plant-Soil Interaction, Ministry of Education, Center for Resources, Environment and Food Security, College Resources and Environmental Sciences, China Agricultural University, Beijing China.

PMID: 27507976 PMCID: PMC4960235 DOI: 10.3389/fpls.2016.01070

Abstract

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.

Keywords: genome-wide association; micronutrient; natural variation; seed; zinc deficiency

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