Split application of silicon in cadmium (Cd) spiked alkaline soil plays a vital role in decreasing Cd accumulation in rice (Oryza sativa L.) grains

Rehman, Muhammad Zia ur; Rizwan, Muhammad; Rauf, Abd; Ayub, Muhammad Ashar; Ali, Shafaqat; Qayyum, Muhammad Farooq; Waris, Aisha A.; Akhtar, Naeem; Sanaullah, Muhammad

doi:10.1016/j.chemosphere.2019.03.182

Cited by 106 publications

(26 citation statements)

References 49 publications

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“…Rice ( Oryza sativa L.) is one of the world’s leading grains and a major source of food for more than half of the world’s population [8]; it contributes 55–80% toward a person’s total calorie intake [9]. Rice can accumulate high levels of Cd [10]. In the 1950s, the people of Japan were afflicted by a disease called “Itai-Itai” with symbols of calcium loss in bones, anemia, and severe muscle pain due to the utilization of rice grown in Cd-contaminated industrial water.…”

Section: Introductionmentioning

confidence: 99%

Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice

et al. 2019

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Cadmium (Cd) is a well-known metal imposing threats to human health, and it can be accumulated in polished rice over the permitted range of 0.2 mg kg−1 (GB 2762-2017). It has been reported that selenium (Se) application decreases Cd uptake. Se-rich diets have gained attention recently, but the potential of Se-rich rice in mitigating Cd stress needs further investigation. In this study, a pot experiment in the field was conducted to assess the influence of environmental factors and exogenous split application of Se on the nutritional status of rice under Cd stress. The results indicated that the increased fertilizer treatment in soil bulk linearly increased the metal content in rice grains. Approximately 50–70% of metal was recovered in rice tissues, while 5–20% of the metal that was applied leached down into the soil. A Se concentration of 0.4 mg kg−1 could significantly improve the total Se content in grain and mitigate Cd toxicity (1 mg kg−1) below the permitted range. Panicles and roots were more active for total Se accumulation in Se-rich and non-Se-rich rice, respectively. Polishing and milling operations can significantly reduce the Cd content, as rice bran in rice tissues accumulated most of the metal’s residues. The late matured rice cultivars consumed more heat units, and more metal contents were found in them. Collectively, it was found that Se can mitigate Cd toxicity, but the rice cultivation at T2 (high Cd; 2 mg kg−1 and Se; 1 mg kg−1) increased the metal uptake capability and health-risk index in polished rice, with its Se content heightened over permitted range of 0.04 to 0.30 mg kg−1 (GB/T 22499-2008). However, further molecular studies are required, in order to completely access the inverted Se accumulation behavior in rice tissues at high Cd soil stress.

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Section: Introductionmentioning

confidence: 99%

Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice

et al. 2019

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“…For example, silicon addition to nutrient solution reduced by 20% the translocation of Cd from roots to maize shoots, with effects on damage reduction to the photosynthetic apparatus (SILVA et al, 2017). Rice plants (Oryza sativa) cultivated under Cd stress and Si-treated showed an increase in chlorophyll content, photosynthetic rate, and growth (REHMAN et al, 2019). Silicon application to soil had a positive effect on the biomass production of pigeon pea plants grown under Cd and Zn stress; besides, silicon reduced uptake and translocation of these metals to the shoots (GARG & SINGH, 2018).…”

Section: Silva Et Almentioning

confidence: 99%

Cadmium, silicon and nutrient accumulation by maize plants grown on a contaminated soil amended with a diatomaceous Earth fertilizer

et al. 2021

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Given that cadmium (Cd) poses high persistence in the environment and toxicity to humans, strategies to either decrease or avoid Cd entry in the trophic chain are fundamental to secure food safety. Here we assessed the effects of applying rates of Si as a diatomaceous Earth-based fertilizer on the amelioration of Cd toxicity towards maize plants grown on soil with or without pH correction. Besides determining Si and Cd concentrations, we also evaluated plant accumulation of nutrients (N, P, K, Ca, Mg, Fe, Mn, Cu, and Zn) as a function of Si doses applied to the soil. Results showed that both the Si application and the liming had a positive effect on biomass and nutrient uptake, but the Si effect on plants’ performance took place irrespectively to the soil pH. Silicon ameliorated Cd phytotoxicity in both limed and unlimed soils by decreasing Cd concentration in shoots and improving biomass yield and plant nutrition. Silicon alleviation of Cd-inhibitory effects on plants was more effective in the unlimed soil owing to the higher Cd availability in acidic soils. Also, taking into account the reduced transfer of Cd to shoots driven by Si, lower Cd accumulation in maize grains is likely, with implications to food safety. So, further studies on field conditions are warranted.

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“…Huang et al (2018) conducted a research with the objective of verifying the reduction of toxic elements in rice crop at different levels of development and noticed a reverse effect, there was an increase in the availability of Cd in the soil, however, there was a reduction in the amount absorbed by the plants, possibly a change in the shape of the Cd in the soil, being in a form not available for the plant. Rehman et al (2019) evaluated the split application of silicon in the form of potassium silicate in cadmium mitigation in soil and rice plants, the bilotment was based on the stages of plant development (transplantation, pertrethyent, beginning of panicle formation and after complete panicle formation) and they observed that there was a greater reduction in cadmium availability in the soil when silica was applied in transplantation, byedonting and beginning of panicle formation. Mu et al (2019) evaluated the effect of a silicon-based residue associated with biochar on the reduction of toxic elements in soil and accumulation in grass and they observed that silicon-based residue with or without the association of biochar contributed to the immobilization of Cd and Pb in the soil and commented that this effect may be related to the effect of the pH increase.…”

Section: Silicon In the Reduction Of Toxic Elements In The Soilmentioning

confidence: 99%

Effect of silicon on reduction the availability of toxic elements in the soil: a brief review

Silva

Fernandes

2021

Sci. Elec. Arch.

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Soil pollution is a major environmental problem and also makes food production impossible, since 95% of food produced worldwide originates in the soil. There are numerous practices that when improperly made can cause soil contamination, in agriculture the inadequate use of fertilizers and agrochemicals can cause soil contamination by toxic elements. Silicon is already present in the soil in a natural way, but in recent years research is being developed using silicon-based residues to increase plants resistance to pests and diseases, such as soil corrective and for increased productivity, the results are satisfactory. Many published studies show the benefits of silicon in reducing plants stress, but there is still little information about silicon as a remediator of toxic elements in the soil, so the objective of this work was to search for already published works on this theme. Studies were found using different silicon sources and the application occurred in soils contaminated mainly with Zn, Cd, Cu and Pb.

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Split application of silicon in cadmium (Cd) spiked alkaline soil plays a vital role in decreasing Cd accumulation in rice (Oryza sativa L.) grains

Cited by 106 publications

References 49 publications

Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice

Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice

Cadmium, silicon and nutrient accumulation by maize plants grown on a contaminated soil amended with a diatomaceous Earth fertilizer

Effect of silicon on reduction the availability of toxic elements in the soil: a brief review

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