Relationships Between Subcellular Distribution and Translocation and Grain Accumulation of Pb in Different Rice Cultivars

Liu, Jianguo; Mei, Congcong; Cai, Hui; Wang, Mingxin

doi:10.1007/s11270-015-2380-z

Cited by 10 publications

(2 citation statements)

References 33 publications

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“…This may be related to the mechanisms of Cd 2 þ translocation from roots to shoots via Ca channels (Mark 1990;Kim et al 2002) and endogenous Zn transporters by active transport (Pence et al 2000;Uraguchi & Fujiwara 2012). Pb precipitation in cell walls can decrease Pb transport from stem to grain (Liu et al 2015).…”

Section: Heavy Metal Transfer From Soils To Rice Plantsmentioning

confidence: 99%

Distributions and risks of Cu, Cd, Pb and Zn in soils and rice in the North River Basin, South China

Bai

Li²,

Liu³

et al. 2018

Earth and Environmental Science Transactions of the Royal Socie

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As the largest industrial and population centre in China, the Pearl River Delta is facing a growing threat of heavy metal pollution from local mining and power industries. This study investigates the distribution and potential health risks of copper (Cu), cadmium (Cd), lead (Pb) and zinc (Zn) in paddy soils and rice at four typical sites. The Nemerow synthetic pollution index (PN) of soils from Fogang, Dabao Mountain, Shaoguan and Lechang were 8.40, 9.10, 4.64 and 10.28, respectively, indicating serious pollution at all four sampling sites. The average concentrations of Cu, Cd, Pb and Zn in rice grains were 2.23, 10.98, 29.84 and 1.62 times their corresponding maximum allowable levels, indicating potential health risks to humans. Cd has greater bioavailability because of its high mobility from soil to roots, and its subsequent transfer to grains. Pb mainly accumulates in roots because of its lower translocation rate from roots to grains. The greatest health risk index for Cd and Pb for adults and children was at the Shaoguan site, probably due to pollution from atmospheric deposition. Cd and Pb had greater health risk indices than Cu and Zn at almost all sites, indicating a major health risk to local people.

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Section: Heavy Metal Transfer From Soils To Rice Plantsmentioning

confidence: 99%

Distributions and risks of Cu, Cd, Pb and Zn in soils and rice in the North River Basin, South China

Bai

Li²,

Liu³

et al. 2018

Earth and Environmental Science Transactions of the Royal Socie

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“…In mature leaves, Sb concentrations >150 mg/kg are generally considered toxic [9]. Many recent studies have confirmed that different genotypes of the same species can differ in their accumulation and absorption of heavy metals (e.g., Chinese cabbage (Brassica chinensis L.) [30] and rice (Oryza sativa L.) [31]). To identify suitable C. bungei varieties for the remediation of Sb-contaminated soil, the ability of each genotype to absorb Sb should be considered.…”

Section: Discussionmentioning

confidence: 99%

Effects of Antimony Stress on Growth and Physiology of 10 Genotypes of Catalpa bungei

Liu

Tong

et al. 2021

Forests

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Increasing levels of antimony (Sb) pollution have been recognized as an emerging environmental problem. Phytoremediation of Sb-contaminated soil is a green, economical, and effective method for restoring polluted soils. Here, we studied differences in Sb tolerance, accumulation, and transport by different genotypes of Catalpa bungei C. A. Mey, with the goal of identifying genotypes that are suitable for remediating Sb-contaminated soil. Different concentrations of Sb were applied to soil, and we analyzed variation in growth, biomass, Sb content in different organs, Sb transport capacity, oxidizing substances, antioxidants, and antioxidant enzyme activities in 10 C. bungei genotypes. Marked differences were found in plant height, ground diameter, and biomass among different genotypes at given Sb concentrations. The Sb concentration in different plant organs also varied between genotypes. The content of Sb in each genotype was proportional to the exposure. At 600 mg Sb/kg soil, the highest concentration of Sb in roots and leaves was found in Genotype 63, and that in stems was found in Genotype 8402. The lowest concentration of Sb in roots, stems, and leaves was found in Genotypes 8402, 2-8, and 20-01, respectively. At 1200 mg Sb/kg soil, Genotype 5-2 had the highest concentration of Sb in roots, and Genotype 1-1 had the highest concentration in stems and leaves. The lowest concentration of Sb in roots was in Genotype 72, and that in stems and leaves was found in Genotype 20-01. At 2000 mg Sb/kg soil, the highest concentration of Sb in roots was found in Genotype 5-8, in stems in Genotype 8402, and in leaves in Genotype 72. The lowest concentration of Sb in roots was observed in Genotype 72 and in stems and leaves in Genotype 2-8. After absorption by C. bungei, Sb mainly accumulated in the roots, and upward transfer ability was poor. The Sb biological concentration factor of roots of all genotypes was >1 at each tested Sb concentration. Our results demonstrate that all 10 C. bungei genotypes could be used for plant stabilization of Sb-contaminated soil. However, the different genotypes of C. bungei had different responses to different Sb concentrations. Based on root Sb accumulation values, at soil Sb concentrations around 600 mg/kg, Genotypes 1, 63, and 5-8 are suited to phytoremediation; Genotypes 5-8, 1, and 5-2 are suited to phytoremediation at soil Sb concentrations around 1200 mg/kg; and Genotypes 5-8, 1, and 8402 are suited to phytoremediation at soil Sb concentrations around 2000 mg/kg. We demonstrate for the first time that Sb-contaminated soil can be improved by using specific plant genotypes tailored to different levels of Sb pollution.

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Lead in Rice Grain

Pereira

Lange

Pedron

et al. 2020

The Future of Rice Demand: Quality Beyond Productivity

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Relationships Between Subcellular Distribution and Translocation and Grain Accumulation of Pb in Different Rice Cultivars

Cited by 10 publications

References 33 publications

Distributions and risks of Cu, Cd, Pb and Zn in soils and rice in the North River Basin, South China

Distributions and risks of Cu, Cd, Pb and Zn in soils and rice in the North River Basin, South China

Effects of Antimony Stress on Growth and Physiology of 10 Genotypes of Catalpa bungei

Lead in Rice Grain

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