Effects of phosphorus on chemical forms of Cd in plants of four spinach (Spinacia oleracea L.) cultivars differing in Cd accumulation

Yin, Aiguo; Yang, Zhongyi; Ebbs, Stephen D.; Yuan, Jiangang; Wang, Jianbin; Yang, Junzhi

doi:10.1007/s11356-015-5813-8

Cited by 41 publications

(14 citation statements)

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“…The chemical form of Cd determines the characteristics of Cd migration, potential phytotoxicity, and accumulation in plants and then influences the detoxification and tolerance to Cd of plants [10][11][12][13]. Yin et al [12] found that the different capacity to binding Cd different forms (such as F HCl -Cd and F r -Cd) played an important role in the genotype difference in Cd accumulation of spinach.…”

Section: Introductionmentioning

confidence: 99%

“…Yin et al [12] found that the different capacity to binding Cd different forms (such as F HCl -Cd and F r -Cd) played an important role in the genotype difference in Cd accumulation of spinach. Mwamba et al [14] demonstrated that metals which are both in the form of insoluble phosphate and firmly adsorbed in the cell walls and vacuoles are not free to migrate and have low toxicity, whereas Xu et al [15] reported that high Cd mobility is often in the forms of the water soluble Cd, inorganic Cd, and Cd complexes with organic acids.…”

Section: Introductionmentioning

confidence: 99%

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The Response of Duckweed (Lemna minor L.) Roots to Cd and Its Chemical Forms

Xue

Wang

Huang

et al. 2018

Journal of Chemistry

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The response of duckweed (Lemna minor L.) roots to Cd and its chemical forms was investigated. The relative root growth rate and concentrations of Cd and its different chemical forms in the root, that is, ethanol-extractable (F E -Cd), HCl-extractable (F HClCd), and residual fractions (F r -Cd), were quantified. Weibull model was used to unravel the regression between the relative root elongation (RRL) with chemical forms of Cd. Parameters assessed catalase (CAT), peroxidases (POD), and superoxide dismutase (SOD), as well as malondialdehyde (MDA) and total antioxidant capacity (A-TOC). Our results show that both the relative root growth rate and relative frond number were affected by Cd concentrations. The chemical forms of Cd were influenced by Cd content in the medium. Relative root elongation (RRL) showed a significant correlation with chemical forms of Cd. Additionally, POD and SOD increased at lower Cd concentrations followed by a decrease at higher Cd concentrations (at more than 5 M Cd). Moreover, MDA and A-TOC increased and CAT decreased with increasing Cd exposure. Furthermore, CAT showed a significant correlation with F HCl -Cd. Taken together, it can be concluded that the chemical forms of Cd are statistically significant predictors of Cd toxicity to duckweed and to the other similar aquatic plants.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Response of Duckweed (Lemna minor L.) Roots to Cd and Its Chemical Forms

Xue

Wang

Huang

et al. 2018

Journal of Chemistry

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“…When P is deficient, plant growth and crop yield are reduced, as P is an essential element for the synthesis of nucleic acids, phospholipids, and adenosine triphosphate (ATP) (Yin et al, 2016). Our results indicated that there was a significant negative correlation between Cd, Pb, or Zn and P concentration in water spinach plants (Fig.…”

Section: Discussionmentioning

confidence: 71%

Variations in cadmium and nitrate co-accumulation among water spinach genotypes and implications for screening safe genotypes for human consumption

Tang

Luo

et al. 2018

J. Zhejiang Univ. Sci. B

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Abstract:Vegetables are important constituents of the human diet. Heavy metals and nitrate are among the major contaminants of vegetables. Consumption of vegetables and fruits with accumulated heavy metals and nitrate has the potential to damage different body organs leading to unwanted effects. Breeding vegetables with low heavy metal and nitrate contaminants is a cost-effective approach. We investigated 38 water spinach genotypes for low Cd and nitrate co-accumulation. Four genotypes, i.e. JXDY, GZQL, XGDB, and B888, were found to have low co-accumulation of Cd (<0.71 mg/kg dry weight) and nitrate (<3100 mg/kg fresh weight) in the edible parts when grown in soils with moderate contamination of both Cd (1.10 mg/kg) and nitrate (235.2 mg/kg). These genotypes should be appropriate with minimized risk to humans who consume them. The Cd levels in the edible parts of water spinach were positively correlated with the concentration of Pb or Zn, but Cd, Pb, or Zn was negatively correlated with P concentration. These results indicate that these three heavy metals may be absorbed into the plant in similar proportions or in combination, minimizing the influx to aerial parts. Increasing P fertilizer application rates appears to prevent heavy metal and nitrate translocation to shoot tissues and the edible parts of water spinach on co-contaminated soils.

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“…The plant samples were heated at 105°C for 30 min, dried at 60°C for 24 h, mulled and sieved through a 2-mm nylon mesh and reserved in a glass bottle. The As, Cd and Zn concentrations in the plants were determined by HNO 3 -HClO 4 digestion in a conical flask (Simmons et al 2005;Yin et al 2016).…”

Section: Methodsmentioning

confidence: 99%