Silicon-mediated alleviation of Mn toxicity in Cucumis sativus in relation to activities of superoxide dismutase and ascorbate peroxidase

Shi, Qinghua; Bao, Zhenan; Zhu, Zhujun; He, Yehua; Qian, Qiongqiu; Yu, Jingquan

doi:10.1016/j.phytochem.2005.05.006

Cited by 216 publications

(123 citation statements)

References 49 publications

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“…Williams and Vlamis (1957a,b) discovered for the first time that total Mn in the leaves was unaffected by Si but Si caused Mn to be more evenly distributed instead of being concentrated in discrete necrotic spots. This finding has been supported by subsequent experiments (Horst and Marschner, 1978;Horiguchi and Morita, 1987;Shi et al, 2005b). Horst et al (1999) observed that Si lowered the apoplastic Mn concentration in cowpea, suggesting that Si may modify the cation binding capacity of the cell wall.…”

Section: Mechanisms For Silicon-mediated Alleviation Of Metal Toxicitymentioning

confidence: 56%

“…In 1957 Williams and Vlamis (1957a,b) discovered that Mn toxicity in barley in solution culture was alleviated by addition of a small amount of Si. Recently the role of silicon in mitigating Mn toxicity has been investigated extensively in barley (Horiguchi and Morita, 1987), rice (Okuda and Takahashi, 1962), bean (Horst and Marschner, 1978), pumpkin (Iwasaki and Matsumura, 1999), cowpea (Iwasaki et al, 2002a,b) and cucumber (Rogalla and Römheld, 2002;Shi et al, 2005b). Williams and Vlamis (1957a,b) discovered for the first time that total Mn in the leaves was unaffected by Si but Si caused Mn to be more evenly distributed instead of being concentrated in discrete necrotic spots.…”

Section: Mechanisms For Silicon-mediated Alleviation Of Metal Toxicitymentioning

confidence: 99%

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Mechanisms of silicon-mediated alleviation of abiotic stresses in higher plants: A review

Liang

Sun

Zhu

et al. 2007

Environmental Pollution

955

603

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Although silicon (Si) is the second most abundant element both on the surface of the Earth's crust and in soils, it has not yet been listed among the essential elements for higher plants. However, the beneficial role of Si in stimulating the growth and development of many plant species has been generally recognized. Silicon is known to effectively mitigate various abiotic stresses such as manganese, aluminum and heavy metal toxicities, and salinity, drought, chilling and freezing stresses. However, mechanisms of Si-mediated alleviation of abiotic stresses remain poorly understood. The key mechanisms of Si-mediated alleviation of abiotic stresses in higher plants include: (1) stimulation of antioxidant systems in plants, (2) complexation or co-precipitation of toxic metal ions with Si, (3) immobilization of toxic metal ions in growth media, (4) uptake processes, and (5) compartmentation of metal ions within plants. Future research needs for Si-mediated alleviation of abiotic stresses are also discussed.

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Section: Mechanisms For Silicon-mediated Alleviation Of Metal Toxicitymentioning

confidence: 56%

Section: Mechanisms For Silicon-mediated Alleviation Of Metal Toxicitymentioning

confidence: 99%

Mechanisms of silicon-mediated alleviation of abiotic stresses in higher plants: A review

Liang

Sun

Zhu

et al. 2007

Environmental Pollution

955

603

View full text Add to dashboard Cite

show abstract

“…It also contributes to the co-precipitation of Si-metal complexes in the cell wall, compartmentalization of metals bound to organic acids in the vacuole (Neumann and Nieden, 2001), more homogeneous distribution of metals, formation of Si-polyphenol complexes in tissues (Maksimovic et al, 2007), and reduced lipid peroxidation in the membrane, via stimulation of enzymatic and non-enzymatic antioxidants (Shi et al, 2005b). Silicon is linked to lower As translocation to rice straw and grains (Ali et al, 2009), with proven benefits in food safety.…”

Section: Introductionmentioning

confidence: 99%

Effects of Silicon on Alleviating Arsenic Toxicity in Maize Plants

Silva

Nascimento

Neto

et al. 2015

Rev. Bras. Ciênc. Solo

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Arsenic is a metalloid highly toxic to plants and animals, causing reduced plant growth and various health problems for humans and animals. Silicon, however, has excelled in alleviating stress caused by toxic elements in plants. The aim of this study was to investigate the effects of Si in alleviating As stress in maize plants grown in a nutrient solution and evaluate the potential of the spectral emission parameters and the red fluorescence (Fr) and far-red fluorescence (FFr) ratio obtained in analysis of chlorophyll fluorescence in determination of this interaction. An experiment was carried out in a nutrient solution containing a toxic rate of As (68 μmol L -1 ) and six increasing rates of Si (0, 0.25, 0.5, 1.0, 1.5, and 2.0 mmol L -1 ). Dry matter production and concentrations of As, Si, and photosynthetic pigments were then evaluated. Chlorophyll fluorescence was also measured throughout plant growth. Si has positive effects in alleviating As stress in maize plants, evidenced by the increase in photosynthetic pigments. Silicon application resulted in higher As levels in plant tissue; therefore, using Si for soil phytoremediation may be a promising choice. Chlorophyll fluorescence analysis proved to be a sensitive tool, and it can be successfully used in the study of the ameliorating effects of Si in plant protection, with the Fr/FFr ratio as the variable recommended for identification of temporal changes in plants.

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“…However, higher concentrations of cobalt display carcinogenic properties and induce the generation of ROS [18]. Manganese is also involved in the initial formation of ROS and their subsequent reactions with macromolecules such as proteins, lipids, polysaccharides and nucleic acids leading to altered membrane fluidity, loss of enzyme activity and genomic damage [19]. The toxicologic characteristics of mercury (elemental, inorganic and organic forms) and its ability to react with and deplete free sulfhydryl groups are wellknown [20].…”

Section: Introductionmentioning

confidence: 99%

Probing the coordination properties of glutathione with transition metal ions (Cr2+,Mn2+,Fe2+,Co2+, Ni2+,Cu2+,Zn2+,Cd2+,Hg2+) by density functional theory

Liu

et al. 2014

J Biol Phys

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Probing the coordination properties of glutathione with transition metal ions (Cr 2+,were larger than that of M-N and M-O; for Cr 2+ complexes, most of the WBIs of M-O in complexes were higher than that of M-S and M-N. Furthermore, the changes in the electron configuration of the metal cations before and after chelate reaction revealed that Cu 2+ , Ni 2+ , Co 2+ and Hg 2+ had obvious tendencies to be reduced to Cu + , Ni + , Co + and Hg + during the coordination process.

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Silicon-mediated alleviation of Mn toxicity in Cucumis sativus in relation to activities of superoxide dismutase and ascorbate peroxidase

Cited by 216 publications

References 49 publications

Mechanisms of silicon-mediated alleviation of abiotic stresses in higher plants: A review

Mechanisms of silicon-mediated alleviation of abiotic stresses in higher plants: A review

Effects of Silicon on Alleviating Arsenic Toxicity in Maize Plants

Probing the coordination properties of glutathione with transition metal ions (Cr2+,Mn2+,Fe2+,Co2+, Ni2+,Cu2+,Zn2+,Cd2+,Hg2+) by density functional theory

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