Simultaneous stimulation of arsenic methylation and inhibition of cadmium bioaccumulation in rice grain using zero valent iron and alternate wetting and drying water management

Mlangeni, Angstone Thembachako; Perez, Magali; Raab, Andrea; Krupp, Eva M.; Norton, Gareth J.; Feldmann, Jörg

doi:10.1016/j.scitotenv.2019.134696

Cited by 33 publications

(32 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…179% (in root) Using selenium amendments (i) Enhancing the essential amino acids; and (ii) increasing non-protein thiols and phytochelatins in rice [109] 144% (in shoot) 46% (in straw) Using Si-rich amendments (i) Decreasing As accumulation and (ii) reducing CH4 emissions from soil [97] 27.5 (in grains) Using selenite fertilization (i) Decreasing the soil solution As in flooded condition; (ii) decreasing As uptake by rice in aerobic and (iii) decreasing the proportion of As in rice shoots. [110] 50% (straw, flag leaf and husk) Using silicon (i) Increasing the Si, Fe and P in soil solution [111] 68.9% to 78.3% (in grains) Using ferromanganese oxide and biochar (i) increasing the Fe and Mn plaque content and (ii) improving the biomass weight of the rice [112] 32% (in grains under low water) Using zero valent iron (i) Increasing percentage productive tillers and grain yield and (ii) reducing the cadmium bioaccumulation in rice grains [113] As shown in Table 3, using microalgae and bacteria are efficient in reducing As accumulation in rice.…”

Section: Agronomic Methods For Reducing Uptake and Accumulation Of Armentioning

confidence: 99%

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Abedi

Mojiri

2020

Plants

View full text Add to dashboard Cite

Rice consumption is a source of arsenic (As) exposure, which poses serious health risks. In this study, the accumulation of As in rice was studied. Research shows that As accumulation in rice in Taiwan and Bangladesh is higher than that in other countries. In addition, the critical factors influencing the uptake of As into rice crops are defined. Furthermore, determining the feasibility of using effective ways to reduce the accumulation of As in rice was studied. AsV and AsIII are transported to the root through phosphate transporters and nodulin 26-like intrinsic channels. The silicic acid transporter may have a vital role in the entry of methylated As, dimethylarsinic acid (DMA) and monomethylarsonic acid (MMA), into the root. Amongst As species, DMA(V) is particularly mobile in plants and can easily transfer from root to shoot. The OsPTR7 gene has a key role in moving DMA in the xylem or phloem. Soil properties can affect the uptake of As by plants. An increase in organic matter and in the concentrations of sulphur, iron, and manganese reduces the uptake of As by plants. Amongst the agronomic strategies in diminishing the uptake and accumulation of As in rice, using microalgae and bacteria is the most efficient.

show abstract

Section: Agronomic Methods For Reducing Uptake and Accumulation Of Armentioning

confidence: 99%

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Abedi

Mojiri

2020

Plants

View full text Add to dashboard Cite

show abstract

“…9 Minimization of Cd concentration in rice plays a key role in decreasing the Cd concentration and in food safety. Various approaches have been applied to reduce the Cd concentrations in rice and guard food safety in Cdcontaminated soil, e.g., soil amendment application, 10,11 foliar and soil microelement application, 12,13 water management, 14 microbial remediation, 15 and low-Cd variety cultivation. 16 One of the most economically efficient and sustainable methods for decreasing rice Cd concentration and phytotoxicity is to apply a beneficial element.…”

Section: Introductionmentioning

confidence: 99%

“…Minimization of Cd concentration in rice plays a key role in decreasing the Cd concentration and in food safety. Various approaches have been applied to reduce the Cd concentrations in rice and guard food safety in Cd-contaminated soil, e.g., soil amendment application, , foliar and soil microelement application, , water management, microbial remediation, and low-Cd variety cultivation . One of the most economically efficient and sustainable methods for decreasing rice Cd concentration and phytotoxicity is to apply a beneficial element. , Silicon (Si) and selenium (Se) can alleviate the phytotoxicity in many plants under heavy metal stress − and are regarded as effective and environmentally friendly ways to reduce their accumulation in various crops (e.g., rice, wheat, maize, medicago, and barley). ,,, Si and Se are regarded as beneficial elements with respect to resistance to Cd stress in plants via the decrease in oxidative stress, , compartmentalization and complexation, , improvement of photosynthesis, balance of nutrients, and regulation of transporter gene expression .…”

Section: Introductionmentioning

confidence: 99%

Influence of Silicon and Selenium and Contribution of the Node to Cadmium Allocation and Toxicity in Rice

Zhou

Gao

Cui

et al. 2021

ACS Agric. Sci. Technol.

View full text Add to dashboard Cite

Minimization of cadmium (Cd) in edible parts of crops is regarded as an effective approach for reducing the threat of Cd to public health. Beneficial elements selenium (Se) and silicon (Si) have been shown to promote rice growth and to reduce the rice Cd concentration under Cd stress. We performed a field experiment that highlighted the role of stem nodes and foliar Si and Se sprayings on the accumulation of Cd in 14 rice tissues, including brown rice, husk, panicle, four nodes, four internodes, and three leaves. The results indicated that foliar Se and Si applications significantly decreased brown rice Cd concentrations by 56% and 50% from 1.5 mg kg–1 to 0.66 and 0.75 mg kg–1, respectively. The applications of Se and Si were mainly through the reduction of the accumulation of Cd in rice roots by 27% and 32%, resulting in decreases in Cd in nodes by 53–76% and 26–60% respectively, while Cd concentrations were not significantly reduced in leaves and internodes. The first node beneath the panicle (N I) also played a critical role in the allocation of Cd within rice plants, whereas foliar Se and Si sprayings significantly reduced the extent of transfer of Cd from node I to the first internode and rice grain and significantly increased the extent of transfer of Cd to the flag leaf. However, N III had no effects on the transport of Cd to upper organs and N II promoted the translocation of Cd to upper organs after applications of Se and Si. Applications of Se and Si also improve the uptake of most of the mineral nutrients in N I. Overall, reduction of Cd in rice root and nodes and allocation of Cd in N I are the key steps in the accumulation of Cd in brown rice.

show abstract

“…Different letters indicate the mean difference is significant among treatments at the 0.05 level creased with 1 000 mg/kg NZVI. The application of 0.05% and 0.62% ZVI increased the biomass of the shoots and roots of rice plants grown in soil under As and Cd treatments (Qiao et al 2018, Mlangeni et al 2020, which suggest that microscale ZVI can promote plant growth. The adsorption of As and Cd by ZVI and RH will reduce their adverse effects on rice growth.…”

Section: Resultsmentioning

confidence: 87%

Influence of zero-valent iron and rice husk on As and Cd uptake in rice

Guo¹,

Wang²,

Hu³

et al. 2021

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

Zero-valent iron (ZVI) and rice husk (RH) have potential as adsorbents for heavy metals; however, their effects on iron plaque formation and heavy metal uptake by plants are still unclear. In this study, the impacts of ZVI, RH and their combinations on iron plaque formation on the root surface and the uptake of As and Cd by rice plants were investigated. A pot experiment was performed under waterlogged conditions using As<sup>(III)</sup>- or Cd<sup>(II)</sup>-spiked soil. The results showed that ZVI (0.05% or 0.2%) with or without RH significantly increased iron plaque formation and Fe contents in rice plants and pore water. Under As treatment, ZVI (0.05% or 0.2%) without or with RH obviously increased the As content in plaques and reduced the As content in grains by 67% and 66% and 19% and 24%, respectively. The Cd content was markedly increased in iron plaques and reduced in roots, shoots and grains by ZVI and RH. ZVI (0.05% or 0.2%), RH and their combinations reduced the grain Cd content by 61, 62, 60, 68 and 69%. These findings suggest that ZVI is effective in hindering As and Cd uptake by rice with or without RH in paddies contaminated with As or Cd.

show abstract

Simultaneous stimulation of arsenic methylation and inhibition of cadmium bioaccumulation in rice grain using zero valent iron and alternate wetting and drying water management

Abstract: Simultaneous stimulation of arsenic methylation and inhibition of cadmium bioaccumulation in rice grain using zero valent iron and alternate wetting and drying water management,

Cited by 33 publications

References 39 publications

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Arsenic Uptake and Accumulation Mechanisms in Rice Species

Influence of Silicon and Selenium and Contribution of the Node to Cadmium Allocation and Toxicity in Rice

Influence of zero-valent iron and rice husk on As and Cd uptake in rice

Contact Info

Product

Resources

About