Underlying mechanisms responsible for restriction of uptake and translocation of heavy metals (metalloids) by selenium via root application in plants

Feng, Renwei; Wang, Lizhen; Yang, JiGang; Zhao, Pingping; Zhu, Yanming; Li, YuanPing; Yu, Yan; Liu, Hong; Rensing, Christopher; Wu, Zhen; Ni, Runxiang; Zheng, Shunan

doi:10.1016/j.jhazmat.2020.123570

Cited by 131 publications

(43 citation statements)

References 161 publications

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“…As plants and environments are intensively connected, they face multifaceted stresses due to their sessile nature. Due to rapid industrialization and agricultural development, plenty of wastewater, fertilizers, and pesticides are discharged that result in toxic metal/metalloid contamination of soil and other environmental components (Feng et al, 2020). Exposure of plants to various metals including cadmium (Cd), chromium (Cr), lead (Pb), arsenic (As), copper (Cu), nickel (Ni), iron (Fe), mercury (Hg), antimony (Sb) etc.…”

Section: Introductionmentioning

confidence: 99%

“…Contrarily, plants possess the defense tactics for keeping ROS at a nontoxic level to regulate its signaling roles through involving non-enzymatic and enzymatic antioxidants (Hasanuzzaman et al, 2019). Toxic metal contamination in the environment also causes threats to human health via the food chain (Feng et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…have been reported already. Additionally, lower Se concentration is able to stimulate the biosynthesis of hormone-like auxin, which causes the remodeling of root architecture with higher root growth for resulting in lower metal uptake (Feng et al, 2020). Supplementation of Se causes an increase of pectin and hemicellulose contents as well as thickness of cell wall, which enhances the binding of toxic metals by the cell wall (Zhao et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Selenium Supplementation and Crop Plant Tolerance to Metal/Metalloid Toxicity

et al. 2022

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Selenium (Se) supplementation can restrict metal uptake by roots and translocation to shoots, which is one of the vital stress tolerance mechanisms. Selenium can also enhance cellular functions like membrane stability, mineral nutrition homeostasis, antioxidant response, photosynthesis, and thus improve plant growth and development under metal/metalloid stress. Metal/metalloid toxicity decreases crop productivity and uptake of metal/metalloid through food chain causes health hazards. Selenium has been recognized as an element essential for the functioning of the human physiology and is a beneficial element for plants. Low concentrations of Se can mitigate metal/metalloid toxicity in plants and improve tolerance in various ways. Selenium stimulates the biosynthesis of hormones for remodeling the root architecture that decreases metal uptake. Growth enhancing function of Se has been reported in a number of studies, which is the outcome of improvement of various physiological features. Photosynthesis has been improved by Se supplementation under metal/metalloid stress due to the prevention of pigment destruction, sustained enzymatic activity, improved stomatal function, and photosystem activity. By modulating the antioxidant defense system Se mitigates oxidative stress. Selenium improves the yield and quality of plants. However, excessive concentration of Se exerts toxic effects on plants. This review presents the role of Se for improving plant tolerance to metal/metalloid stress.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selenium Supplementation and Crop Plant Tolerance to Metal/Metalloid Toxicity

et al. 2022

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“…The latest results on the effects of Se supplementation on metal-exposed plants indicate that coprecipitation of Se and metals in soil plays a key role in inhibiting the uptake of metals by plants. Selenium may also affect metal uptake through the modification of root morphology by the action of phytohormones [12], an increase in the proportion of less mobile metal complexes, and better metal binding to the root cell wall as a result of elevated amounts of pectin and hemicellulose, all of which lead to a limitation of metal transport across the plasma membrane [13]. Therefore, in the presence of Se, restricted Cd accumulation was observed in fruits [14] and seeds [15,16].…”

Section: Introductionmentioning

confidence: 99%

Difference between Selenite and Selenate in the Regulation of Growth and Physiological Parameters of Nickel-Exposed Lettuce

Hawrylak-Nowak

Matraszek-Gawron

2020

Biology

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Nickel is an essential plant micronutrient; however, even at low concentrations, it may be phytotoxic. Selenium is a beneficial element with an alleviating effect that has been confirmed in the case of many abiotic stresses, including metal toxicity. The aim of this study is to assess the effect of two forms of Se (Se(IV) or Se(VI)) on the phytotoxicity, accumulation, and translocation of Ni in lettuce. Nickel causes a reduction in lettuce growth and vitality of roots, probably through increased lipid peroxidation. The application of Se(IV) to a Ni-contaminated medium resulted in a further reduction of growth, especially in the presence of 6 µM Se(IV). The growth-promoting effect of Se was found only in the 2 µM Se(VI)/10 µM Ni treatment. The application of 6 µM Se, regardless of the Se form, to the Ni-containing substrate caused an increase in shoot Ni concentration. In turn, a decrease in root Ni content was found for all Se treatments. The strong aggravation of Ni phytotoxicity in the presence of 6 µM Se(IV) was most likely related to the accumulation of high Se concentration in the roots, and the combination of high root Ni accumulation caused irreversible dysregulation of cell metabolism.

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“…It is worth mention that the germination rates of orchids in vitro are reported to be higher than 70%, whereas this rate in germinated seeds may hardly exceed 5% under the natural conditions and in ex vitro conditions (Cardoso et al 2020). Selenium (Se) can counteract many stressful conditions, which adversely damage cultivated plants including biotic and abiotic stress (Hasanuzzaman et al 2020) such as high temperature (Hawrylak-Nowak et al 2018), drought (Sattar et al 2019), waterdeficit (Sattar et al 2019), salinity (Kamran et al 2020) and heavy metal stress (Feng et al 2021;Huang et al 2021). Under ex vitro conditions, nano-Se has been used in ameliorating different stresses such as high temperature (Djanaguiraman et al 2018;Seliem et al 2020), salinity (Morales-Espinoza et al 2019 andZahedi et al 2019), heavy metals stress (Hussain et al 2020) and biotic stress (Quiterio-Gutiérrez et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Response of Phalaenopsis Orchid to Selenium and Bio-Nano-Selenium: In Vitro Rooting and Acclimatization

Seliem

Abdalla

El-Ramady

2020

EBSS

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O RCHID plants are considered one of the most valuable and largest flowering plant families, which have a premium position in the global market of cut-flowers. Rooting of orchids is still the main real problem that obstructs its propagation, as roots are hardly to develop.So, Orchid needs to improve its in vitro propagation by enhancing its rooting development. The plant tissue culture of orchids is the most promising field that has been commercially used for getting of virus-free and high-quality rooted plants and representing around 70% of transplants production. In this study the shoots of in vitro plantlets were separated and cultured on half MS medium supplemented with nano-Se (0,10, 20, 30, 40 and 50 mg l-1) or corresponding doses of bulk type selenite; sodium selenite (0, 0.5, 1, 2, 4, 6, 8 and 10 mg l-1) in separates treatments with or without 0.5 mg l-1 NAA (α-naphthalene acetic acid). The two different sources of selenium were selected at mentioned concentrations to improve orchid rooting and acclimatization. Supplementation of half MS medium with 50 mg l-1 nano-Se + 0.5 mg l-1 NAA recorded the highest significant values of rooting percentage and root length as well. Whereas, half MS medium fortified with 40 mg l-1 nano-Se + 0.5 mg l-1 NAA gave the optimum number of roots. On the other hand, this enhancing effect on rooting decreased after augmentation the culture medium with 10 mg l-1 selenite. It could be concluded that in vitro rooting of Phalaenopsis orchid was improved by supplementation of nano-Se up to 50 mg l-1 in presence of 0.5 mg l-1 NAA consequence, acclimatization process was enhanced.

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Underlying mechanisms responsible for restriction of uptake and translocation of heavy metals (metalloids) by selenium via root application in plants

Cited by 131 publications

References 161 publications

Selenium Supplementation and Crop Plant Tolerance to Metal/Metalloid Toxicity

Selenium Supplementation and Crop Plant Tolerance to Metal/Metalloid Toxicity

Difference between Selenite and Selenate in the Regulation of Growth and Physiological Parameters of Nickel-Exposed Lettuce

Response of Phalaenopsis Orchid to Selenium and Bio-Nano-Selenium: In Vitro Rooting and Acclimatization

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