Long-term effects of exogenous silicon on cadmium translocation and toxicity in rice (Oryza sativa L.)

Zhang, Chaochun; Wang, Lijun; Nie, Qing; Zhang, Wenxu; Zhang, Fusuo

doi:10.1016/j.envexpbot.2007.10.024

Cited by 191 publications

(93 citation statements)

References 36 publications

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“…Similar effects of Si in plant growth were observed in other species treated with excess of Al, Cu, Cd, Mn and Zn. 8,12,22,23,27,28,33 Because of the beneficial effects of Si on growth reported in a wide variety of crops, Si is applied as fertilizer both as soil amendment and in foliar treatments. 4,5 When grown under optimal Cu concentrations, Si supply did not improve the growth of Erica plants, results are in agreement with previous reports in other species, 4,5 which had shown Siderived benefits only under stress conditions.…”

Section: Discussionmentioning

confidence: 99%

“…5,18,19 It is the only element that does not cause serious injury when present in excess. 4,5 Silicon plays a significant role in minimizing the toxic effects of excess of metals like Al, 7,12,14,20,21 Cd, 15,22,23 Mn, [24][25][26][27] and Zn. 6,8 In these investigations, different mechanisms were proposed to explain the Si-associated alleviation of metal toxicity.…”

Section: Introductionmentioning

confidence: 99%

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Effects of silicon on copper toxicity in Erica andevalensis Cabezudo and Rivera: a potential species to remediate contaminated soils

2011

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The influence of silicon on responses to copper excess was studied in plants of Erica andevalensis. Plantlets were grown in nutrient solutions containing two Cu (1 and 500 mM) and three Si concentrations (0, 0.5 and 1 mM). Plant growth, water content, and mineral nutrient concentration were determined. Plants grown with 500 mM Cu showed differences in growth and shoot water content depending on Si supply. The addition of 1 mM Si in high-Cu nutrient solutions significantly improved plant growth and reduced water loss preventing plant death related to Cu-excess. Silicon supply reduced significantly leaf Cu concentration (up to 32%) and increased Cu concentration in roots. Phytoliths isolated from leaves were analysed by scanning electron microscopy coupled with energydispersive X-ray spectroscopy. Such phytoliths consisted in silica deposits associated with Cu and other elements (K, Ca, P). Improvement by Si of Cu tolerance in E. andevalensis was clearly related to the inhibition of Cu upward transport. The leaf phytoliths formed in Si-treated plants might have some contribution to tolerance by Cu immobilisation and inactivation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of silicon on copper toxicity in Erica andevalensis Cabezudo and Rivera: a potential species to remediate contaminated soils

2011

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“…Evidence has suggested that silicon (Si) fertilizers are effective in reducing the concentration of Cd (Shi et al 2005;Kim et al 2014) or As in rice grain (Guo et al 2007;Seyfferth and Fendorf 2012). Various Si compounds, such as K 2 SiO 3 and silica gel, were chosen as Si fertilizers for hydroponic culture or pot experiments to mitigate Cd or As individually in rice shoots (Zhang et al 2008;Putwattana et al 2010;Marmiroli et al 2014). It can be difficult to compare the effects of various Si fertilizers on reducing Cd or As in rice because of the differences in fertilizer types, dosage, rice cultivation methods, and other confounding factors.…”

Section: Responsible Editor: Elena Maestrimentioning

confidence: 99%

“…The information from field experiments about Si for Cd and As reduction in rice grain is limited, even though many laboratory experiments have shown the efficacy of As and Cd reduction in rice grain by Si application (Wang et al 2000;Zhang et al 2008;Guo et al 2009). The field experiment is necessary to confirm the effects of Si fertilizers on heavy metal mitigation, especially in the paddy fields contaminated with multiple elements.…”

Section: Responsible Editor: Elena Maestrimentioning

confidence: 99%

Mitigation of cadmium and arsenic in rice grain by applying different silicon fertilizers in contaminated fields

Wang

Wen

Chen

et al. 2015

Environ Sci Pollut Res

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A field experiment was established to support the hypothesis that application of different silicon (Si) fertilizers can simultaneously reduce cadmium (Cd) and arsenic (As) concentration in rice grain. The Bsemi-finished product of Si-potash fertilizer^treatment at the high application of 9000 kg/ha (NP+S-KSi9000) significantly reduced the As concentration in rice grain by up to 20.1 %, compared with the control. Si fertilization reduces the Cd concentration in rice considerably more than the As concentration. All Si fertilizers apart from sodium metasilicate (Na 2 SiO 3 ) exhibited a high ability to reduce Cd concentration in rice grain. The Sicalcium (CaSi) fertilizer is the most effective in the mitigation of Cd concentration in rice grain. The CaSi fertilizer applied at 9000 kg/ha (NPK+CaSi9000) and 900 kg/ha (NPK+CaSi900) reduced the Cd concentration in rice grain about 71.5 and 48.0 %, respectively, while the Si-potash fertilizer at 900 kg/ ha (NP+KSi900), the semi-finished product of Si-potash fertilizer at both 900 kg/ha (NP+S-KSi900) and 9000 kg/ha (NP+S-KSi9000), and the rice straw (NPK+RS) treatments reduced the Cd concentration in rice grain about 42, 26.5, 40.7, and 23.1 %, respectively. The results of this investigation demonstrated the potential effects of Si fertilizers in reducing Cd and As concentrations in rice grain.

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“…Although Si is not recognized as an essential element for fruit trees, it has proven beneficial effects for many species (MA & YAMAJI, 2008). For example, Si has increased tolerance of the plants to the toxicity of Mn, Fe, Cd and Zn (CUNHA et al, 2008;ZHANG et al, 2008;FERREIRA et al, 2013).…”

Section: Agronomic Practices To Reduce the Toxicity Of Heavy Metals Imentioning

confidence: 99%

Heavy Metals in Vineyards and Orchard Soils

et al. 2017

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-The application of foliar fungicides in vineyards and orchards can increase soil concentration of heavy metals such as copper (Cu) and zinc (Zn), up to the toxicity threshold for fruit trees and cover crops. However, some agronomic practices, such as liming, addition of organic fertilizers, cultivation of soil cover crops and inoculation of young plants with arbuscular mycorrhizal fungi can decrease the availability and the potential of heavy metal toxicity to fruit trees. This review aims to compile and present information about the effects of increasing concentrations of heavy metals, especially Cu and Zn, on soils cultivated with fruit trees and provides some agronomic practices of remediation. Information about the sources of heavy metals found in soils cultivated with fruit trees are presented; mechanisms of absorption, transport, accumulation and potential toxicity to plants are described. Index terms: Trace element, phytotoxicity, growth, fruit trees. METAIS PESADOS EM SOLOS DE VINHEDOS E POMARESRESUMO -A aplicação de fungicidas foliares em vinhedos e pomares pode incrementar os teores de metais pesados, como o cobre (Cu) e o zinco (Zn), em solos e, quando em excesso, podem causar toxidez às frutíferas ou plantas de cobertura. Porém, algumas práticas agronômicas, como a calagem, adição de resíduos orgânicos, cultivo de plantas de cobertura do solo e inoculação de plantas jovens com fungos micorrízicos arbusculares (FMA) podem diminuir a disponibilidade e o potencial de toxidez de metais pesados às frutíferas. A presente revisão objetivou compilar e apresentar informações sobre os efeitos do aumento dos teores de metais pesados, especialmente, Cu e Zn, em solos cultivados com frutíferas e algumas práticas agronômicas de remediação. Ao longo do texto são apresentadas informações sobre as fontes de metais pesados, com enfase no Cu e Zn, em solos cultivados com frutíferas; mecanismos de absorção, transporte, acúmulo e potencial de toxidez às plantas. Além disso, são relatadas algumas práticas agronômicas viáveis para remediar o potencial de toxidez de metais pesados em solos cultivados com frutíferas. Com a adoção destas práticas se espera menor disponibilidade de metais pesados no solo, o que reduziria o potencial de toxidez às plantas, especialmente, em frutíferas jovens transplantadas em solos com alto teor de metais pesados, como o Cu e Zn, permitindo satisfatório crescimento, produção e composição de frutos. Termos para indexação: Elemento traço, fitotoxidez, crescimento, frutíferas.1 (Paper 226-15).

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Long-term effects of exogenous silicon on cadmium translocation and toxicity in rice (Oryza sativa L.)

Cited by 191 publications

References 36 publications

Effects of silicon on copper toxicity in Erica andevalensis Cabezudo and Rivera: a potential species to remediate contaminated soils

Effects of silicon on copper toxicity in Erica andevalensis Cabezudo and Rivera: a potential species to remediate contaminated soils

Mitigation of cadmium and arsenic in rice grain by applying different silicon fertilizers in contaminated fields

Heavy Metals in Vineyards and Orchard Soils

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