Zinc effects on cadmium toxicity in two wheat varieties (Triticum aestivum L.) differing in grain cadmium accumulation

Zhou, Zhen; Zhang, Biao; Liu, Haitao; Liang, Xiaodong; Wei, Ma; Zhenya, Shi; Yang, Shuo

doi:10.1016/j.ecoenv.2019.109562

Cited by 49 publications

(15 citation statements)

References 46 publications

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“…•− [93]. Zinc application reduces Cd 2+ accumulation, which depends greatly on the crop cultivar, and increases leaf Zn 2+ content and at the same time decreases MDA concentration [94][95][96][97][98]. Application of selenium, silicon, melatonin, and salicylic acid have been also found to alleviate Cd 2+ -induced toxicity by inhibition of ROS overproduction [72,73,[99][100][101][102][103].…”

Section: Discussionmentioning

confidence: 99%

Excess Zinc Supply Reduces Cadmium Uptake and Mitigates Cadmium Toxicity Effects on Chloroplast Structure, Oxidative Stress, and Photosystem II Photochemical Efficiency in Salvia sclarea Plants

Sperdouli

Adamakis

Dobrikova

et al. 2022

Toxics

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Salvia sclarea L. is a Cd2+ tolerant medicinal herb with antifungal and antimicrobial properties cultivated for its pharmacological properties. However, accumulation of high Cd2+ content in its tissues increases the adverse health effects of Cd2+ in humans. Therefore, there is a serious demand to lower human Cd2+ intake. The purpose of our study was to evaluate the mitigative role of excess Zn2+ supply to Cd2+ uptake/translocation and toxicity in clary sage. Salvia plants were treated with excess Cd2+ (100 μM CdSO4) alone, and in combination with Zn2+ (900 μM ZnSO4), in modified Hoagland nutrient solution. The results demonstrate that S. sclarea plants exposed to Cd2+ toxicity accumulated a significant amount of Cd2+ in their tissues, with higher concentrations in roots than in leaves. Cadmium exposure enhanced total Zn2+ uptake but also decreased its translocation to leaves. The accumulated Cd2+ led to a substantial decrease in photosystem II (PSII) photochemistry and disrupted the chloroplast ultrastructure, which coincided with an increased lipid peroxidation. Zinc application decreased Cd2+ uptake and translocation to leaves, while it mitigated oxidative stress, restoring chloroplast ultrastructure. Excess Zn2+ ameliorated the adverse effects of Cd2+ on PSII photochemistry, increasing the fraction of energy used for photochemistry (ΦPSII) and restoring PSII redox state and maximum PSII efficiency (Fv/Fm), while decreasing excess excitation energy at PSII (EXC). We conclude that excess Zn2+ application eliminated the adverse effects of Cd2+ toxicity, reducing Cd2+ uptake and translocation and restoring chloroplast ultrastructure and PSII photochemical efficiency. Thus, excess Zn2+ application can be used as an important method for low Cd2+-accumulating crops, limiting Cd2+ entry into the food chain.

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Section: Discussionmentioning

confidence: 99%

Excess Zinc Supply Reduces Cadmium Uptake and Mitigates Cadmium Toxicity Effects on Chloroplast Structure, Oxidative Stress, and Photosystem II Photochemical Efficiency in Salvia sclarea Plants

Sperdouli

Adamakis

Dobrikova

et al. 2022

Toxics

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“…Zinc and Cd are chemically similar and may compete for transport mechanisms during uptake and translocation in the crop [14]. Zhou et al [81] noted that Zn has antagonistic and synergistic effects on Cd uptake by plants. Saifullah et al [79] reported that applied Zn can decrease up to 74% of Cd concentration in the roots, straw, and grain.…”

Section: Using Zincmentioning

confidence: 99%

“…Saifullah et al [79] reported that applied Zn can decrease up to 74% of Cd concentration in the roots, straw, and grain. Applying 50 µM Zn decreases approximately 17% of Cd concentration in the shoots of wheat [81]. Rizwan et al [51] found that adding zinc-lysine can reduce Cd concentration in plants and improve wheat growth.…”

Section: Using Zincmentioning

confidence: 99%

“…In addition, Jan et al [96] applied Exiguobacterium indicum SA22 and Enterobacter ludwigii SAK5 to reduce Cd accumulation in rice. [71] 57% (in grains) 0.2 (in grain) Using biochar Mixing biochar (5%) with soil [10] 97% (in straw) >0.2 (in straw) Using limestone + biochar Mixing limestone + biochar with soil [98] 77% (in grains) 1.1-0.2 (in grain) Using zinc oxide nanoparticles Foliar application [99] 55% to 69% (in root) 1-0.6 (in root) Using zinc Using ZnSO 4 in nutrient solution [81] 7%-24% (in root) 13%-37% (in stem) 13%-50% (in grains) 4-3 (in root) 3.8-2.2 (in stem) 0.2-0.9 (in grain)…”

Section: Using Bacteriamentioning

confidence: 99%

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Cadmium Uptake by Wheat (Triticum aestivum L.): An Overview

Abedi

Mojiri

2020

Plants

132

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Cadmium is a toxic heavy metal that may be detected in soils and plants. Wheat, as a food consumed by 60% of the world’s population, may uptake a high quantity of Cd through its roots and translocate Cd to the shoots and grains thus posing risks to human health. Therefore, we tried to explore the journey of Cd in wheat via a review of several papers. Cadmium may reach the root cells by some transporters (such as zinc-regulated transporter/iron-regulated transporter-like protein, low-affinity calcium transporters, and natural resistance-associated macrophages), and some cation channels or Cd chelates via yellow stripe 1-like proteins. In addition, some of the effective factors regarding Cd uptake into wheat, such as pH, organic matter, cation exchange capacity (CEC), Fe and Mn oxide content, and soil texture (clay content), were investigated in this paper. Increasing Fe and Mn oxide content and clay minerals may decrease the Cd uptake by plants, whereas reducing pH and CEC may increase it. In addition, the feasibility of methods to diminish Cd accumulation in wheat was studied. Amongst agronomic approaches for decreasing the uptake of Cd by wheat, using organic amendments is most effective. Using biochar might reduce the Cd accumulation in wheat grains by up to 97.8%.

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“…Zinc (Zn) is a plant-essential micronutrient, it plays critical roles in numerous proteins (Palmgren et al 2008). Zinc and Cd have similar chemical properties; in the soil-plant system, there are interactions between Zn and Cd, which can be either antagonistic or synergistic (Haisel et al 2019;Yang et al 2020a; Zhou et al 2019). In soil, Zn may compete for binding sites with Cd, thus reducing Cd bioavailability (Rassaei et al 2020;Renella et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Application of zinc oxide reduces the bioavailability and specific uptake of cadmium by alfalfa grown in a cadmium-contaminated alkaline soil

Zhang

2022

Preprint

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Aims Zinc (Zn) and cadmium (Cd) have similar chemical properties and interact with each other in the soil-plant system. Application of Zn may be an effective way for phytoremediation of Cd-contaminated soils.Methods A greenhouse pot experiment was carried out to grow alfalfa in an alkaline soil spiked with different rates of Cd (0, 20, and 80 mg kg–1) and Zn (0, 200, and 800 mg kg–1) as cadmium oxide (CdO) and zinc oxide (ZnO), respectively, to investigate the effects of ZnO application on soil Cd bioavailability, plant growth and Cd uptake. Results Adding ZnO resulted in a lower soil pH and greater DTPA-extractable Zn concentration, but a lower DTPA-extractable Cd concentration. The effect of ZnO addition on Cd bioavailability depended on both soil Cd level and Zn dose. Soil Cd contamination considerably inhibited plant growth and increased both root and shoot Cd concentrations. Adding ZnO significantly enhanced plant growth and reduced specific Cd uptake by roots and plant Cd concentrations, but did not affect the total amount of Cd taken up by plants. The percentage of total plant Cd content allocated to roots was significantly lower, but the root-to-shoot translocation factor of Cd was higher when ZnO was added. Both CdO and ZnO addition had a small effect on root exudation of carboxylates. Conclusions Application of ZnO to soil alleviated Zn deficiency and reduced Cd bioavailability, consequently enhanced plant growth and Cd concentrations, and it may be a cost-effective way for phytoremediation of Cd-contaminated soils.

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Zinc effects on cadmium toxicity in two wheat varieties (Triticum aestivum L.) differing in grain cadmium accumulation

Cited by 49 publications

References 46 publications

Excess Zinc Supply Reduces Cadmium Uptake and Mitigates Cadmium Toxicity Effects on Chloroplast Structure, Oxidative Stress, and Photosystem II Photochemical Efficiency in Salvia sclarea Plants

Excess Zinc Supply Reduces Cadmium Uptake and Mitigates Cadmium Toxicity Effects on Chloroplast Structure, Oxidative Stress, and Photosystem II Photochemical Efficiency in Salvia sclarea Plants

Cadmium Uptake by Wheat (Triticum aestivum L.): An Overview

Application of zinc oxide reduces the bioavailability and specific uptake of cadmium by alfalfa grown in a cadmium-contaminated alkaline soil

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