Subcellular cadmium distribution and antioxidant enzymatic activities in the leaves of two castor ( Ricinus communis L.) cultivars exhibit differences in Cd accumulation

Zhang, Hanzhi; Guo, Qingjun; Yang, Jin‐yan; Shen, Jianxiu; Chen, Tongbin; Zhu, Guangtian; Chen, Hui; Shao, Chen

doi:10.1016/j.ecoenv.2015.06.003

Cited by 65 publications

(25 citation statements)

References 44 publications

(52 reference statements)

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“…This finding indicates that heavy metals in the sediment might cause adverse effects on the river systems studied. This was corresponded with previous studies that reported serious levels of heavy metal pollution in the sediment of Dongting Lake and its tributaries [21,[49][50][51][52]. This was especially true for Cd, which was 60-fold higher than the UCC and US EPA guidelines and 7.6-fold higher than the PEL.…”

Section: Discussionsupporting

confidence: 78%

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Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China

Chen

Zheng

et al. 2018

Water

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Heavy metal pollution in sediment is one of the most serious problems in water bodies, including rivers, which can cause secondary pollution when environmental conditions change. In this study, surface sediment samples collected from the four main tributaries of Dongting Lake (i.e., Xiangjiang River (XR), Zishui River (ZR), Yuanjiang River (YR), and Lishui River (LR)) were analyzed for concentrations of Zn, Cr, Cu, As, Cd, and Pb. The spatial distribution, source, and potential ecological risk of these metals were determined. The results suggest a great spatial heterogeneity of heavy metals in the sediment of the studied rivers. Heavy metals had highest concentrations in the sediment of XR, especially midstream and downstream. A principal component analysis (PCA) and correlation analysis indicated that Cd and As were mainly from industrial wastewater and mineral mining, Cr came from natural process and agricultural activities, and Zn and Cu potentially from both. Pb was originated from atmospheric deposition and river inflow transportation. According to the geo-accumulation index (I geo ), enrichment factor (EF), and risk index (RI) assessment, heavy metals pollution was highest in the sediment of XR, and Cd was the main pollutant in the sediment of XR, presenting considerable potential ecological risk. This may contribute to heavy metal pollution in Dongting Lake. This paper provides a reference for the aquatic environmental management of heavy metals in Dongting Lake area and its tributaries.

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Section: Discussionsupporting

confidence: 78%

“…This corresponds with previous reports that Cd was the main pollutants of all of the heavy metals, and had the highest ecological risk in the sediment of Dongting Lake area [21,50,52].…”

Section: Discussionsupporting

confidence: 67%

Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China

Chen

Zheng

et al. 2018

Water

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“…Analyzing the subcellular distribution of Pb was essential for clarifying the accumulation ability and the tolerance mechanism of Festuca arundinacea 36 . The results of subcellular distribution ( Fig.…”

Section: Distribution Of Pb In Subcellular Of Festuca Arundinaceamentioning

confidence: 99%

Co-remediation of Pb Contaminated Soils by Heat Modified Sawdust and Festuca arundinacea

Zhang¹,

Wang²,

Ji³

2020

Sci Rep

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This research aimed to explore the potential and mechanism of heat modified sawdust combined with Festuca arundinacea for the remediation of pb-contaminated soil. We determined pb concentration and biochemical indices in plants and soils, analyzed microbial communities in soil, and studied Pb distribution in subcellular and tissues. Under co-remediation of 5% material addition and Festuca arundinacea, the concentration of pb in soil decreased. pb toxicity of Festuca arundinacea was alleviated by 2% material addition through the promotion of plant growth and reduction of oxidative stress. In addition, soil enzyme activities and microbial community in contaminated soil were promoted by the application of co-remediation. Festuca arundinacea cell wall accumulated a large amount of Pb, and the addition of material promoted the accumulation of Pb in Festuca arundinacea root. The concentration of Pb in the shoot of the plant treated with 2% material was higher than that of the plant treated with 5% material, and the damage of Festuca arundinacea leaves was lower under 2% treatment. The combination of heat modified sawdust and Festuca arundinacea promoted the adsorption of Pb by plants, and protected the growth of plants.

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“…Successful phytoremediation requires a suitable plant for use on the toxicant. Castor bean (Ricinus communis L.), a C3 plant of the Euphorbiaceae, has great potential for phytoremediation of Cd or Pb contaminated soil (Bauddh and Singh, 2012;Huang et al, 2011;Liu et al, 2008;Shi and Cai, 2009;Zhang et al, 2014aZhang et al, , 2015. Castor bean is also an important energy crop for biofuel or biodiesel production but inedible for humans and animals.…”

Section: Introductionmentioning

confidence: 99%

Comparison of chelates for enhancing Ricinus communis L. phytoremediation of Cd and Pb contaminated soil

Zhang

Guo

Yang

et al. 2016

Ecotoxicology and Environmental Safety

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a b s t r a c tWe studied chelate effects on castor bean (Ricinus communis L.) growth. These effects included Cd and Pb accumulation in plant tissues and the chemical behavior of Cd and Pb in the plant rhizosphere and nonrhizosphere. Tests were conducted in a glasshouse using the rhizobag method. Two castor bean cultivars (Zibo-3 and Zibo-9) were grown in soil contaminated with 3.53 mg/kg Cd and 274 mg/kg Pb. The soil was treated with citric acid (CA), ethylenediamine disuccinic acid (EDDS) or ethylenediamine tetraacetic acid (EDTA) (5 mmol/kg). EDDS-treated soil produced 28.8% and 59.4% greater biomass for Zibo-3 and Zibo-9 respectively. In contrast, CA and EDTA inhibited the growth of the two cultivars. Zibo-9 had greater tolerance than Zibo-3 to chelate toxicity. Based on Cd and Pb plant uptake, EDDS could substitute for EDTA for phytoremediation of Cd in soil. EDTA was the most effective of the three chelates for Pb phytoremediation but it is less suitable for field use due to toxicology environmental persistence. Acid extractable Cd and Pb in the rhizosphere or reducible Cd and Pb in the non-rhizosphere of soil were the main influences on Cd and Pb accumulation in castor bean.

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Subcellular cadmium distribution and antioxidant enzymatic activities in the leaves of two castor ( Ricinus communis L.) cultivars exhibit differences in Cd accumulation

Cited by 65 publications

References 44 publications

Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China

Assessment of Heavy Metal Pollution in the Sediment of the Main Tributaries of Dongting Lake, China

Co-remediation of Pb Contaminated Soils by Heat Modified Sawdust and Festuca arundinacea

Comparison of chelates for enhancing Ricinus communis L. phytoremediation of Cd and Pb contaminated soil

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