Cadmium uptake and speciation changes in the rhizosphere of cadmium accumulator and non-accumulator oilseed rape varieties

Su, Dechun; Xing, J. P.; Jiao, Weiping; Wong, Woonchung

doi:10.1016/s1001-0742(08)62391-8

Cited by 23 publications

(15 citation statements)

References 11 publications

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“…Cadmium is a toxic trace element to plants and animals, and can cause damage even at very low concentrations (Wagner, 1993;Liu et al, 2007a;Wang et al, 2007;Xu et al, 2007;Huang et al, 2009;Su et al, 2009;Sun et al, 2009;Yang et al, 2009) and can be taken up by crops easily (Wagner, 1993;Liu et al, 2007a;Huang et al, 2009). In China, much soil has been polluted with Cd which is one of the most important and typical heavy metal pollutant (Chen, 1996;Su et al, 2009;Liu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In China, much soil has been polluted with Cd which is one of the most important and typical heavy metal pollutant (Chen, 1996;Su et al, 2009;Liu et al, 2010). According to the literature, about 14000 hm 2 of agricultural soils have been polluted with Cd in China (Chen, 1996;Su et al, 2009). Moreover, Cd may pose risk to human and animal health through consumption of crops although the plant tissue concentrations may not be generally phytotoxic (Liu et al, 2007b).…”

Section: Introductionmentioning

confidence: 99%

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Bioaccumulation and translocation of cadmium in wheat (Triticum aestivum L.) and maize (Zea mays L.) from the polluted oasis soil of Northwestern China

Yang

Zhang

Zhao

2014

Chemical Speciation & Bioavailability

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A pot experiment was conducted to study the bioaccumulation and translocation of cadmium (Cd) in wheat (Triticum aestivum L.) and maize (Zea mays L.) grown in the Cd-polluted oasis soil in northwest China. The results showed that Cd in the unpolluted oasis soil was mainly bound to carbonate fraction (F2) and Fe-Mn oxide fraction (F3). However, a marked change of the Cd fractionation was observed with increasing soil Cd concentrations, where the concentrations of Cd in F1 (exchangeable fraction), F2 and F3 increased significantly (P<0.001 for F1, F2 and F3). The correlation analysis between the fraction distribution coefficient (FDC) of Cd in the soil and Cd concentration accumulated in the two crops showed that Cd in F1 fraction in the oasis soil made the greatest contribution on the accumulation of Cd in the two crops. Higher bioconcentration factors (BCF) of Cd were observed in the two crops' shoots compared with grains, and low translocation factors (TF) of Cd in the grains were observed for both crops. Cd had a higher accumulation in the edible parts of the wheat, but lower accumulation in those of the maize. Therefore, wheat grown in Cd-polluted oasis soil has a higher risk to human health, whereas maize has a lower risk suggesting that wheat is not suitable for cultivation as crop and consumption by humans in the Cd-polluted oasis soil, but that maize is suitable for plantation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bioaccumulation and translocation of cadmium in wheat (Triticum aestivum L.) and maize (Zea mays L.) from the polluted oasis soil of Northwestern China

Yang

Zhang

Zhao

2014

Chemical Speciation & Bioavailability

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“…The phytoavailability of organic matter bound Cd was very complex, because organic matter bound Cd had uncertainty solubility. Residual Cd was stable and not easily absorbed by plants (Su et al, 2009).…”

Section: Accumulation By Plantsmentioning

confidence: 94%

Cadmium removal capability and growth characteristics of Iris sibirica in subsurface vertical flow constructed wetlands

Gao

Zhang

et al. 2015

Ecological Engineering

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“…Cadmium is a toxic trace element to plants and animals that can cause damage at very low concentrations after uptake by crops. In China, a substantial area of soils (including 14,000 hm 2 of agricultural soils) and large amounts of vegetables were polluted by Cd; therefore, Cd is considered an important and typical pollutant (Chen 1996;Su et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Effects of red mud addition on cadmium accumulation in cole (Brassica campestris L.) under high fertilization conditions

et al. 2016

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Purpose Applications of mineral and organic fertilizer increased soil cadmium (Cd) and could enhance Cd concentrations in edible crops, respectively. Although red mud (RMD) effectively decreased metal bioavailability in soil, the influence of RMD addition on vegetable growth and metal accumulation under high fertilization conditions has rarely been addressed. The aim of this study was to investigate the effects of raw RMD addition on cole growth, quality, and nutrition and Cd accumulation under high fertilization conditions. Materials and methods Pot experiments with cole (Brassica campestris L.) were carried out in a greenhouse. Three treatments, CK (with no mineral fertilizer and RMD addition), CT (more than 2.5 times conventional level of mineral fertilizer applied without any RMD), and RM (more than 2.5 times conventional level of mineral fertilizer applied with RMD added at 0.4 % w/w), were established. After 40 days, the cole plants and soils of every replicate of all treatments were sampled. The Cd, biomass, vitamin C (VC), and total nitrogen and phosphorus of the cole plant samples and the Cd, pH, nitrate, and phosphorus of the soil samples were determined. Results and discussion In contrast to the CT treatment, RM treatment did not significantly influence the biomass and nitrate concentration of the aboveground cole. However, it significantly reduced the Cd content in cole shoots and its bioaccumulation factors by 30.0 and 28.5 %, respectively. The reduction of bioavailable Cd in soil by RMD sorption and the competition with calcium released from RMD led to low Cd assimilation by root. Finally, less Cd was transported to aboveground plant parts in the RM treatment compared with the CT treatment. RMD addition markedly enhanced the total nitrogen in cole shoots by >16.0 %, and the VC by 20.9 %. The promotion of bacterial abundance and soil enzyme activity by RMD addition and calcium release from RMD generated substantial plant available nitrogen. Conclusions With large rate of mineral fertilizer application to the soil, RMD (0.4 %, w/w) addition did not significantly influence the biomass, nitrate, and VC of aboveground cole; however, it significantly reduced the Cd and markedly enhanced the total nitrogen in cole shoots. This study provides valuable information for the safe application of RMD in vegetable production.

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Cadmium uptake and speciation changes in the rhizosphere of cadmium accumulator and non-accumulator oilseed rape varieties

Cited by 23 publications

References 11 publications

Bioaccumulation and translocation of cadmium in wheat (Triticum aestivum L.) and maize (Zea mays L.) from the polluted oasis soil of Northwestern China

Bioaccumulation and translocation of cadmium in wheat (Triticum aestivum L.) and maize (Zea mays L.) from the polluted oasis soil of Northwestern China

Cadmium removal capability and growth characteristics of Iris sibirica in subsurface vertical flow constructed wetlands

Effects of red mud addition on cadmium accumulation in cole (Brassica campestris L.) under high fertilization conditions

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