Cadmium contamination in soils and crops in four mining areas, China

Zhou, Ziqi; Chen, Zhizhong; Pan, Hanjiang; Sun, Binbin; Zeng, Daoming; Li-zhong, HE; Yang, Rong; Zhou, Guohua

doi:10.1016/j.gexplo.2018.06.003

Cited by 46 publications

(23 citation statements)

References 22 publications

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“…Zhou et al [59] published concentrations of Cd from four localities in China, namely: Dexing, Jiangxi province; Yangjiazhangzhi, Liaoning province; Hongqiling, Jilin province; and Baiyin, Gansu province. The soils of Yangjiazhangzhi and Baiyin show properties comparable with soils around Dongchuan, moderate alkaline pH (7.91 and 8.21) and lower values of organic matter [59]. The peak Cd concentrations are significantly higher in Yangjiazhangzhi (22.8 µg/g) and Baiyin (94.0 µg/g).…”

Section: Trace Element Concentrationsmentioning

confidence: 99%

Pollution Assessment of Trace Elements in Agricultural Soils around Copper Mining Area

et al. 2018

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Agricultural soils from Dongchuan copper mining area were sampled and analyzed to determine the concentrations of selected trace elements, namely As, Cd, Cr, Cu, Hg, Ni, Pb and Zn. The main objectives of this study were: (1) To determine the levels of trace elements and their spatial distribution in soils; (2) to evaluate the potential ecological risk; and (3) to identify the main sources of risk element pollution. The environmental risks were assessed using five different contamination and pollution indexes. Descriptive and exploratory statistical analyses were performed to identify the relations among the trace elements in soils and possible sources of pollution. Although the values of As, Cu and Zn in the soils were significantly higher than Yunnan background values and exceeded the limits of the Chinese national standards in several sampling points, the most serious threat for the ecosystem and human health was represented by Cd. The main sources of Cu and As were identified mining activities, airborne particulates from smelters and the weathering of tailings, and partly also agricultural fertilizers. The major source of Cd was agricultural fertilizers and partly sources associated with mining and smelting activities.

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Section: Trace Element Concentrationsmentioning

confidence: 99%

Pollution Assessment of Trace Elements in Agricultural Soils around Copper Mining Area

et al. 2018

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“…However, this pollution problem is an important issue for public policies, because the risk assessment must be integrated into the framework of public health and environmental security [18], because concentrations of heavy metals have been found in crops closely related to soil contamination, for example, according to the Chinese environmental quality standard for soil (GB15618-1995), 64.4, 78.9, 67.5, and 94.1% of the soil samples in Dexing, Yangjiazhangzhi, Hongqiling, and Baiyin exceed the maximum allowed concentration of Cd for farmland, respectively [19]. The risk assessment has indicated that priority attention is required due to the carcinogenic risk of Cr, Cd, and As in soil and rice grains, as well as the potential ecological risks [20].…”

Section: Soils Contaminated By Heavy Metalsmentioning

confidence: 99%

Introductory Chapter: Soil Contamination and Alternatives for Sustainable Development

Vázquez-Luna¹,

Cuevas-Díaz²

2019

Soil Contamination and Alternatives for Sustainable Development

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“…Cadmium (Cd) contamination of agricultural soils has been receiving worldwide attention due to its entry into food crops such as barley (Hordeum vulgare), wheat (Triticum aestivum) and rice (Oryza sativa) [1,2]. In plants, Cd is reported to reduce chlorophyll content, alter nitrogen metabolism and inhibit the photosynthetic apparatus [3,4].…”

Section: Introductionmentioning

confidence: 99%

Combined QTL mapping and RNA-Seq profiling reveals candidate genes associated with cadmium tolerance in barley

et al. 2020

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The high toxicity of cadmium (Cd) and its ready uptake by plants has become a major agricultural problem. To investigate the genetic architecture and genetic regulation of Cd tolerance in barley, we conducted quantitative trait loci (QTL) analysis in the phenotypically polymorphic Oregon Wolfe Barley (OWB) mapping population, derived from a cross between Rec and Dom parental genotypes. Through evaluating the Cd tolerance of 87 available doubled haploid lines of the OWB mapping population at the seedling stage, one minor and one major QTL were detected on chromosomes 2H and 6H, respectively. For chlorosis and necrosis traits, the major QTL explained 47.24% and 38.59% of the phenotypic variance, respectively. RNA-Seq analysis of the parental seedlings under Cd treatment revealed 542 differentially expressed genes between Cd-tolerant Rec and Cd-susceptible Dom genotypes. By analyzing sequence variations in transcribed sequences of the parental genotypes, 155,654 SNPs and 1,525 InDels were identified between the two contrasting genotypes and may contribute to Cd tolerance. Finally, by integrating the data from the identified QTLs and RNA-Seq analysis, 16 Cd tolerance-related candidate genes were detected, nine of which were metal ion transporters. These results provide promising candidate genes for further gene cloning and improving Cd tolerance in barley.

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Cadmium contamination in soils and crops in four mining areas, China

Cited by 46 publications

References 22 publications

Pollution Assessment of Trace Elements in Agricultural Soils around Copper Mining Area

Pollution Assessment of Trace Elements in Agricultural Soils around Copper Mining Area

Introductory Chapter: Soil Contamination and Alternatives for Sustainable Development

Combined QTL mapping and RNA-Seq profiling reveals candidate genes associated with cadmium tolerance in barley

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