Comparison of cadmium subcellular distribution in different organs of two water spinach (Ipomoea aquatica Forsk.) cultivars

Xin, Junliang; Huang, Baifei; Yang, Zhongyi; Yuan, Jiangang; Zhang, Yadong

doi:10.1007/s11104-013-1729-6

Cited by 78 publications

(28 citation statements)

References 32 publications

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“…In most cases heavy metals are retained in plant root cell wall, restricting their translocation to shoot and minimizing plant damage . Similar results were reported by Xin et al (2013aXin et al ( , 2013b and Huang et al (2016). Retention of Cd in the cell wall is the effective and most important mechanism for Cd detoxification in all water spinach tissues, especially in young leaves (Xin et al, 2013b), though this may vary between genotypes (Huang et al, 2016).…”

Section: Discussionsupporting

confidence: 86%

“…Similar results were reported by Xin et al (2013aXin et al ( , 2013b and Huang et al (2016). Retention of Cd in the cell wall is the effective and most important mechanism for Cd detoxification in all water spinach tissues, especially in young leaves (Xin et al, 2013b), though this may vary between genotypes (Huang et al, 2016). The presence of thicker phloem and outer cortex cell walls in the low Cd cultivars may explain why low Cd cultivar roots were able to retain more Cd, thus reducing Cd translocation to shoots (Xin et al, 2013b).…”

Section: Discussionsupporting

confidence: 80%

“…Retention of Cd in the cell wall is the effective and most important mechanism for Cd detoxification in all water spinach tissues, especially in young leaves (Xin et al, 2013b), though this may vary between genotypes (Huang et al, 2016). The presence of thicker phloem and outer cortex cell walls in the low Cd cultivars may explain why low Cd cultivar roots were able to retain more Cd, thus reducing Cd translocation to shoots (Xin et al, 2013b). Nitrate is taken up by plants from fertilizer, but this differs depending on the genotype and environment (Burns et al, 2011b).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

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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Section: Discussionsupporting

confidence: 86%

Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…The metal has a relatively high solubility and mobility in water and then is easily absorbed for aquatic plants [3]. It destroys photosynthetic apparatus and carbohydrate metabolisms of plants [3][4][5] and can be transferred in the food chain to threat human health [6]. Some evidences also indicated that the presence of Cd affected cell wall construction and vesicular trafficking [7].…”

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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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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“…was selected because of its tolerance and resistance to both inorganic and organic pollutants (Bhaduri and Fulekar 2012;Xin et al 2013). The seeds were bought from Jiangsu Provincial Academy of Agricultural Sciences (JAAS).…”

Section: Soil and Plant Seedsmentioning

confidence: 99%

Toxicity of OTC to Ipomoea aquatica Forsk. and to microorganisms in a long-term sewage-irrigated farmland soil

Chen

et al. 2016

Environ Sci Pollut Res

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Water spinach (Ipomoea aquatic Forsk.) was selected to investigate the effects of oxytetracycline (OTC) on the toxicity of soil contaminated by long-term sewage irrigation. After acute toxicity test in petri dish at nine different OTC-spiked levels for 48 h, the germination rate was found to be generally inhibited in all treatments treated with OTC but the root elongation and activities of several antioxidant enzymes, superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) were either forward or backward stimulated to varying extent. During a 60-day sub-chronic toxicity test by means of a pot experiment, activities of SOD, POD and CAT in both the leaf and root tissue at 25 mg OTC per kg soil (dry weight) and in root tissue at 1 mg OTC per kg soil (dry weight) were significantly different than those in other treatments, which also indicated the higher sensitivity of the root. The foliar photosynthetic rate, stomatal conductance and transpiration rate were all gradually inhibited in spite of elevated water use efficiency under the pressure of the different OTC concentrations, which were highly significant different at 10 mg OTC per kg soil (dry weight). Indices of soil microbial diversity at 4 mg OTC kg −1 soil were significantly different from those of the control, indicating the potential adverse effects of OTC to soil microorganisms. The results suggest that the introduction of OTC could damage both plants and soil microorganisms, and during sub-chronic incubation, the sensitivity of different indices generally followed the order of root tissue antioxidant enzyme activities, soil microbial diversity indices, leaf photosynthesis-related index and leaf tissue enzyme antioxidant activities. In addition, the application of livestock and poultry manure containing pollutants like OTC in farmland soil, especially if the soil has been contaminated before, should be taken more seriously in the context of the current pursuit of increased agricultural production.

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Comparison of cadmium subcellular distribution in different organs of two water spinach (Ipomoea aquatica Forsk.) cultivars

Cited by 78 publications

References 32 publications

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

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

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

Toxicity of OTC to Ipomoea aquatica Forsk. and to microorganisms in a long-term sewage-irrigated farmland soil

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