Selecting Zinc‐Efficient Wheat Genotypes with High Grain Yield Using a Stress Tolerance Index

Khoshgoftarmanesh, Amir Hossein; Sadrarhami, A.; Sharifi, H R; Afiuni, D; Schulin, Rainer

doi:10.2134/agronj2009.0103

Cited by 23 publications

(15 citation statements)

References 34 publications

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“…Wheat is the staple food for people living in northern China and reliance on grain with low Zn concentrations can result in chronic Zn deficiency and its associated health problems (Cakmak et al, 1999; Yang et al, 2007; Zhang et al, 2010). Human Zn deficiency has become a significant issue in China and elsewhere, arousing great concern among agronomists and nutritionists (Ma et al, 2008; Khoshgoftarmanesh et al, 2009; Shi et al, 2010; Prom‐u‐thai et al, 2010; Grant et al, 2010; Cakmak, 2010).…”

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confidence: 99%

Effects of Zinc Fertilization on Zinc Dynamics in Potentially Zinc‐Deficient Calcareous Soil

Cui

Tian

et al. 2012

Agronomy Journal

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In China, wheat (Triticum aestivum L.) grown on Zn‐deficient calcareous soils often fails to meet the dietary needs of local populations. The effectiveness of Zn application to a potentially Zn‐deficient calcareous soil was measured using two winter wheat cultivars and five Zn fertilizer rates (0, 7.5, 15, 30, 45 kg Zn ha−1). The results showed that Zn fertilizer increased grain Zn concentration in 2008–2009 by 11 to 33%; however, grain Zn concentrations were still insufficient for human dietary requirements. The apparent Zn utilization efficiency was between 0.14 and 0.98%. Within 1 wk of fertilizer Zn application, Zn weakly bound to organic matter (Wbo‐Zn) increased by amounts equivalent to 63.4 to 84.0% of the fertilizer Zn application. Carbonate‐bound Zn increased by amounts equivalent to 6.5 to 10.3% of the fertilizer Zn. The Wbo‐Zn fraction decreased gradually with time, whereas mineral‐bound Zn increased. Calculations indicated that 62.0 to 78.1% of the fertilizer Zn was mineral bound after 639 d. Diethyltriamine pentaacetic acid extractable Zn concentrations increased by 267 to 529% immediately after Zn fertilization but then decreased. In conclusion, available soil Zn concentrations increased quickly after Zn fertilizer application to a potentially Zn‐deficient calcareous soil; however, the available Zn fractions were soon converted to mineral‐bound forms that were unavailable for plant uptake.

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confidence: 99%

Effects of Zinc Fertilization on Zinc Dynamics in Potentially Zinc‐Deficient Calcareous Soil

Cui

Tian

et al. 2012

Agronomy Journal

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“…Daneshbakhsh et al (2013) reported enhanced phytosiderophore exudation by addition of Zn to Kavir was associated with lower uptake of Fe. In the previous experiments, Kavir was categorized as a Zn-inefficient wheat cultivar, while Rushan was reported to be a Zn-efficient cultivar (Khoshgoftarmanesh et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Release of phytosiderophores from roots of wheat and triticale under nickel‐deficient conditions

Ahmadzadeh

Khoshgoftarmanesh

2019

J. Plant Nutr. Soil Sci.

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Despite numerous studies on phytosiderophores (PS) there is still an open question whether nickel (Ni) deficiency induces release of PS from graminaceous plant roots. Seedlings of two wheat cultivars (Triticum aestivum L. cvs. Rushan and Kavir) and a triticale cultivar (X. triticosecale) were grown in Ni‐free nutrient solution (Ni‐deficient, Ni–) and with 10 µM NiSO4 (Ni‐sufficient, Ni+, control). Root exudates were collected weekly for 4 weeks and the amount of PS in the root exudates was measured. The response to Ni deficiency on the release of PS differed between species. Roots of Rushan and triticale exuded higher PS in response to Ni‐deficient conditions. Nickel deficiency significantly enhanced shoot Fe and Zn concentrations in wheat, while it decreased shoot Fe and Zn concentrations in triticale. In Kavir, PS exudation was decreased by Ni deficiency at weeks 3 and 4 and the reduced release of PS from roots of Kavir was accompanied by lower concentrations of Fe and Zn in plant roots but higher Fe and Zn concentrations in shoot tissue. The PS release by Kavir was triggered by a Ni‐induced Zn deficiency particularly in the shoots. According to the results, it is suggested that in the studies concerning the phytosiderophore release under Ni deficiency, special attention should be given to different responses among and within cereals and to the plant Zn or Fe nutritional status.

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“…Plant cultivation Seeds of the wheat cultivar 'Back Cross (BC) Rushan' were used (Seed and Plant Improvement Institute (SPII), Karaj, Iran [31] ). The plants were germinated on filter paper for 5 days and then hydroponically grown for three weeks in a greenhouse at a 24-14 8C day-night cycle with 16 4 and 0.2 mM ZnSO 4 ) was used, buffered with 2.5 mM 3-(N-morpholino)propanesulfonic acid (MOPS) and adjusted with 1 M NaOH to a pH between 6.5 and 6.9.…”

Section: Plant Experimentsmentioning

confidence: 99%

Diffusion limitation of zinc fluxes into wheat roots, PLM and DGT devices in the presence of organic ligands

et al. 2014

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Environmental context. Zinc is an essential micronutrient for plants and many arid areas of the world have zinc-deficient soils. The bioavailability of Zn to plants is influenced by diffusion limitations and complex lability in the soil solution. To identify the relative importance of these two factors, we investigated the influence of diffusion layer thickness on Zn uptake by wheat and by two bio-mimetic devices in the presence of ethylenediaminetetraacetic acid and two natural ligands found in soil.Abstract. Organic ligands can increase metal mobility in soils. The extent to which this can contribute to plant metal uptake depends among others, on complex lability and diffusion limitations in solute transfer from the soil solution to root uptake sites. We investigated the influence of diffusion layer thickness on zinc uptake by wheat seedlings in the presence of ethylenediaminetetraacetic acid (EDTA), citrate and histidine with similar free Zn by measuring 65 Zn uptake from stirred, non-stirred and agar-containing solutions. Analogous experiments were performed using permeation liquid membranes (PLM) and 'diffusive gradients in thin films' (DGT) probes as bio-mimetic devices. In treatments with low EDTA concentrations (,2 mM) or ligand-free Zn solution, increasing diffusion layer thickness reduced Zn fluxes into roots to a similar extent as into PLM and DGT probes, indicating reduced uptake attributable to diffusion limitation. In the citrate treatments root Zn influx was similar to EDTA treatments under stirred conditions, but increasing diffusion layer thickness did not affect Zn uptake. This suggests complex dissociation compensated for reduced Zn 2þ diffusion and that the entire complexes were not taken up. The Zn root influxes in the histidine treatments were found to be on average by a factor of 2.5 higher than in the citrate treatments and they also showed no decrease in non-stirred and agar treatments. Dissociation kinetics inferred from PLM measurements explained a large part, although not all, of the increased Zn uptake by the plants in the presence of histidine. The difference may be a result of the uptake of neutral or positive Zn-histidine complexes. The results of this study confirm that labile complexes can contribute to Zn uptake by wheat either through diffusion limitation and complex dissociation or through uptake of entire complexes, depending on the nature of the ligands.

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Selecting Zinc‐Efficient Wheat Genotypes with High Grain Yield Using a Stress Tolerance Index

Cited by 23 publications

References 34 publications

Effects of Zinc Fertilization on Zinc Dynamics in Potentially Zinc‐Deficient Calcareous Soil

Effects of Zinc Fertilization on Zinc Dynamics in Potentially Zinc‐Deficient Calcareous Soil

Release of phytosiderophores from roots of wheat and triticale under nickel‐deficient conditions

Diffusion limitation of zinc fluxes into wheat roots, PLM and DGT devices in the presence of organic ligands

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