Molecular speciation and tissue compartmentation of zinc in durum wheat grains with contrasting nutritional status

Persson, Daniel Pergament; Bang, Thomas C. de; Pedas, Pai; Kutman, Ümit Barış; Çakmak, İsmail; Andersen, B. N.; Finnie, Christine; Schjøerring, Jan K.; Husted, Søren

doi:10.1111/nph.13989

Cited by 82 publications

(78 citation statements)

References 57 publications

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“…These results also indicate that foliar FA application may increase grain total Zn concentration through the increase of Zn sink in the grain. High molecular weight compounds (HMW) such as protein, PA, tannins, and certain types of insoluble fiber are major compounds that may form insoluble complex with Zn in cereal grain [18,26,32]. However, in the present study, enhanced protein or PA concentration cannot explain the observed increase in insoluble Zn concentration in grain flowing foliar Zn + FA application because there were no differences in grain N and PA concentrations between foliar Zn and Zn + FA treatments.…”

Section: Discussioncontrasting

confidence: 62%

The Effectiveness of Foliar Applications of Zinc and Biostimulants to Increase Zinc Concentration and Bioavailability of Wheat Grain

2020

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Increasing zinc (Zn) concentration in wheat grain is an important global challenge due to high incidence of Zn deficiency in human populations. In this study, a two-year field experiment was conducted to investigate the effects of foliar ZnSO4 combined with various biostimulants (fulvic acid (FA), seaweed extract (SE), amino acids (AA), and microbial incubates (MI)) on Zn concentration and bioavailability in wheat grain under different soil nitrogen (N) levels (0, 120, and 240 kg N/ha). Grain Zn concentration and bioavailability were significantly enhanced by foliar Zn plus various biostimulants and soil N supply. Compared to foliar Zn alone, foliar Zn + FA resulted in 16% increase in grain Zn, mainly from insoluble Zn increases, while foliar Zn + AA caused 11% increase in grain Zn, mainly from soluble (at N0) and insoluble Zn increases (at N120). Foliar Zn + FA and Zn + AA generally resulted in higher Zn bioavailability than foliar Zn alone. Additionally, N concentration and Fe concentration and bioavailability in grain were enhanced with foliar Zn + AA and soil N application. Thus, foliar ZnSO4 plus FA and AA under optimal soil N rate (120 kg N/ha) can be an effective and economically friendly approach for achieving agronomic biofortification.

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Section: Discussioncontrasting

confidence: 62%

The Effectiveness of Foliar Applications of Zinc and Biostimulants to Increase Zinc Concentration and Bioavailability of Wheat Grain

2020

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“…In contrast, some barley genotypes showed higher accumulation of Zn in the endosperm where it can create a complex with S ligands (Detterbeck et al , ). The N and S nutrition levels have shown strong effects on the deposition and spatial distribution of Zn in the endosperm of wheat grain (Persson et al , ); similar results were obtained for biofortified wheat grains under different nutrient concentrations (Ramos et al , ).…”

Section: Discussionmentioning

confidence: 55%

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within the wheat grain ionome

et al. 2019

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Dissection of the genetic basis of wheat ionome is crucial for understanding the physiological and biochemical processes underlying mineral accumulation in seeds, as well as for efficient crop breeding. Most of the elements essential for plants are metals stored in seeds as chelate complexes with phytic acid or sulfur-containing compounds. We assume that the involvement of phosphorus and sulfur in metal chelation is the reason for strong phenotypic correlations within ionome. Adjustment of element concentrations for the effect of variation in phosphorus and sulfur seed content resulted in drastic change of phenotypic correlations between the elements. The genetic architecture of wheat grain ionome was characterized by quantitative trait loci (QTL) analysis using a cross between durum and wild emmer wheat. QTL analysis of the adjusted traits and two-trait analysis of the initial traits paired with either P or S considerably improved QTL detection power and accuracy, resulting in the identification of 105 QTLs and 617 QTL effects for 11 elements. Candidate gene search revealed some potential functional associations between QTLs and corresponding genes within their intervals. Thus, we have shown that accounting for variation in P and S is crucial for understanding of the physiological and genetic regulation of mineral composition of wheat grain ionome and can be implemented for other plants.

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“…Other authors have shown that N fertilization is important in uptake and accumulation of Zn in grains where it co‐localizes as proteins with Zn in the embryo and aleurone layers (Cakmak et al., 2010a; Erenoglu, Kutman, Ceylan, Yildiz, & Cakmak, 2011; Ozturk et al., 2009). This co‐localization could potentially increase Zn accumulation in the endosperm to concentrations which exceed current breeding targets (Persson et al., 2016).…”

Section: Discussionmentioning

confidence: 99%

Nitrogen effect on zinc biofortification of maize and cowpea in Zimbabwean smallholder farms

et al. 2020

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Agronomic biofortification of crops with zinc (Zn) can be enhanced under increased nitrogen (N) supply. Here, the effects of N fertilizer on grain Zn concentration of maize (Zea mays L.) and cowpea (Vigna unguiculata L.) were determined at two contrasting sites in Zimbabwe over two seasons. All treatments received soil and foliar zinc-sulphate fertilizer. Seven N treatments, with three N rates (0, 45, and 90 kg ha −1 for maize; 0, 15, and 30 kg ha −1 for cowpea), two N forms (mineral and organic), and combinations thereof were used for each crop in a randomized complete block design (n = 4). Maize grain Zn concentrations increased from 27.2 to 39.3 mg kg −1 across sites. At 45 kg N ha −1 , mineral N fertilizer increased maize grain Zn concentration more than organic N from cattle manure or a combination of mineral and organic N fertilizers. At 90 kg N ha −1 , the three N fertilizer application strategies had similar effects on maize grain Zn concentration. Co-application of N and Zn fertilizer was more effective at increasing Zn concentration in maize grain than Zn fertilizer alone. Increases in cowpea grain Zn concentration were less consistent, although grain Zn concentration increased from 39.8 to 52.7 mg kg −1 under optimal co-applications of N and Zn. Future cost/benefit analyses of agronomic biofortification need to include information on benefits of agro-fortified grain, complex farmer management decisions (including cost and access to both N and Zn fertilizers), as well as understanding of the spatial and site-specific variation in fertilizer responses.Abbreviations: CRM, certified reference material; NR, natural regions; SSA, sub-Saharan Africa.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Molecular speciation and tissue compartmentation of zinc in durum wheat grains with contrasting nutritional status

Cited by 82 publications

References 57 publications

The Effectiveness of Foliar Applications of Zinc and Biostimulants to Increase Zinc Concentration and Bioavailability of Wheat Grain

The Effectiveness of Foliar Applications of Zinc and Biostimulants to Increase Zinc Concentration and Bioavailability of Wheat Grain

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within the wheat grain ionome

Nitrogen effect on zinc biofortification of maize and cowpea in Zimbabwean smallholder farms

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