Combined application of silicon and nitric oxide jointly alleviated cadmium accumulation and toxicity in maize

Liu, Huan; Yin, Lina; Deng, Xin; Gong, Di; Du, Sheng; Wang, Shiwen; Zhang, Zhiyong

doi:10.1016/j.jhazmat.2020.122679

Cited by 83 publications

(30 citation statements)

References 66 publications

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“…Modern agricultural practices and rapid industrialization are the major contributors of heavy metals to the soil 3 , 4 . Being a non-essential heavy metal, cadmium (Cd) has the highest solubility and availability, therefore, it is absorbed by the plants with very much ease 5 , 6 . Cadmium invades into our surroundings through several natural and anthropogenic processes like weathering of rocks, subsurface mining, thermal power generation, and disproportionately employed wastewater and sewage water for irrigation practices in agriculture 3 , 7 .…”

Section: Introductionmentioning

confidence: 99%

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Ahmad

Raja²,

Ashraf

et al. 2021

Sci Rep

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Cadmium stress is one of the chief environmental cues that can substantially reduce plant growth. In the present research, we studied the effect of jasmonic acid (JA) and gibberellic acid (GA3) applied individually and/or in combination to chickpea (Cicer arietinum) plants exposed to 150 µM cadmium sulphate. Cadmium stress resulted in reduced plant growth and pigment contents. Moreover, chickpea plants under cadmium contamination displayed higher levels of electrolytic leakage, H2O2, and malonaldehyde, as well as lower relative water content. Plants primed with JA (1 nM) and those foliar-fed with GA3 (10–6 M) showed improved metal tolerance by reducing the accumulation of reactive oxygen species, malonaldehyde and electrolytic leakage, and increasing relative water content. . Osmoprotectants like proline and glycinebetaine increased under cadmium contamination. Additionally, the enzymatic activities and non-enzymatic antioxidant levels increased markedly under Cd stress, but application of JA as well as of GA3 further improved these attributes. Enzymes pertaining to the ascorbate glutathione and glyoxylase systems increased significantly when the chickpea plants were exposed to Cd. However, JA and GA3 applied singly or in combination showed improved enzymatic activities as well as nutrient uptake, whereas they reduced the metal accumulation in chickpea plants. Taken together, our findings demonstrated that JA and GA3 are suitable agents for regulating Cd stress resistance in chickpea plants.

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Section: Introductionmentioning

confidence: 99%

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Ahmad

Raja²,

Ashraf

et al. 2021

Sci Rep

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“…Silicon (Si), the second most abundant element in the earth's crust, is a bene cial element for plant growth and development, especially under various biotic and abiotic stresses (Bhat et al 2019). Studies found that Si supply improves plant tolerance to Cd stress in many crop species, including wheat Wu et al 2019), maize (Vaculík et al 2009; Liu et al 2020), and rice (Nwugo and Huerta 2008;Zhao et al 2020;Zaman et al 2021). Appropriate Si fertilization could be a practical strategy to inhibit the uptake of Cd in maize organs to reduce Cd in Cd-contaminated farmland (Liang et al 2005;Liu et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Studies found that Si supply improves plant tolerance to Cd stress in many crop species, including wheat Wu et al 2019), maize (Vaculík et al 2009; Liu et al 2020), and rice (Nwugo and Huerta 2008;Zhao et al 2020;Zaman et al 2021). Appropriate Si fertilization could be a practical strategy to inhibit the uptake of Cd in maize organs to reduce Cd in Cd-contaminated farmland (Liang et al 2005;Liu et al 2020). Some reports claimed that Si application improved plant growth, yield and increased Cd accumulation in shoots, whereas others have refuted such claims (Coskun et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of Silicon on Morpho-Physiological Attributes, Yield and Cadmium Accumulation in Two Maize Genotypes with Contrasting Root System Size and Health Risk Assessment

Gao

Kuang

et al. 2021

Preprint

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Background and aims Cadmium (Cd) contamination is a serious threat to plants and humans. Silicon (Si) was reported to have some alleviative effects on plant tolerance to Cd stress. However, whether Si alleviates Cd toxicity in maize genotypes with contrasting root system size are unknown. Methods Effects of Si applications (0 and 200 mg kg-1 soil) on shoot and root growth, Cd uptake and transportation under Cd treatments (0 and 20 mg kg-1 soil) were assessed at the silking and maturity of maize genotypes Zhongke11 (large-rooted) and Shengrui999 (small-rooted) in a pot experiment. Results Root dry weight, plant height and root length were significantly affected by Si addition. Root volume and average root diameter were significantly positively correlated with root Cd concentration, bioaccumulation and translocation factor, respectively, of two maize genotypes at the silking stage. Addition of Si significantly increased Cd concentration, content, bioconcentration and translocation factor in roots of Zhongke11, but reduced the values of these parameters in Shengrui9999 at both growth stages. Under Cd stress, grain Cd concentration in the Si treatment was decreased by 14.4% (Zhongke11) and 21.4% (Shengrui999) than that in non-Si treatment. Grain yield was significantly negatively correlated with root Cd accumulation. Moreover, addition of Si significantly reduced Cd daily intake and health risk index in maize.Conclusions This study demonstrated that addition of Si reduced health risk by eliminating Cd accumulation in maize shoot and grain, and alleviated Cd stress with more profound effects in the small-rooted genotype Shengrui999.

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“…detoxifying/sequestering Cd in the subcellular organs (Liu et al 2020;Jiang et al 2020). Glutathione (GSH), a kind of non-enzymatic antioxidant from ascorbic acid-glutathione (ASA-GSH) system, is a low molecular weight thiol compound in plants, playing an important role in the different biological processes (Kuźniak et al 2013), such as participating in the enzymatic reaction to reduce accumulation of reactive oxygen species and maintaining redox status homeostasis (Szalai et al 2009).…”

mentioning

confidence: 99%

Exogenous Glutathione Alleviates Cadmium Toxicity in Wheat by Influencing the Absorption and Translocation of Cadmium

Chen

et al. 2021

Bull Environ Contam Toxicol

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Cadmium (Cd), a toxic heavy metal, is harmful to plants and human health. Glutathione (GSH) could alleviate Cd toxicity of plant species, whereas its mechanism responsible for wheat remains poorly understood. Here, we found that exogenous GSH application significantly increased the fresh and dry weight, root elongation, chlorophyll contents, while decreased the contents of malondialdehyde (MDA) and GSH, and translocation factor of Cd compared with Cd treatment. Moreover, GSH application significantly increased activities of antioxidant enzymes and expression of related genes, which involved in GSH synthesis, especially in roots. In addition, we found that GSH application suppressed Cd-induced expression of metal transporter genes TaNramp1, TaNramp5, TaHMA2, TaHMA3, TaLCT1 and TaIRT2 in roots. Taken together, our results suggested that GSH could alleviate Cd toxicity in wheat by increasing GSH synthesis gene expression or suppressing Cd transporter genes expression, and further affecting Cd uptake and translocation in wheat plants.

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Combined application of silicon and nitric oxide jointly alleviated cadmium accumulation and toxicity in maize

Cited by 83 publications

References 66 publications

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Effect of Silicon on Morpho-Physiological Attributes, Yield and Cadmium Accumulation in Two Maize Genotypes with Contrasting Root System Size and Health Risk Assessment

Exogenous Glutathione Alleviates Cadmium Toxicity in Wheat by Influencing the Absorption and Translocation of Cadmium

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