Morphological and Physiological Changes of Broussonetia papyrifera Seedlings in Cadmium Contaminated Soil

Broussonetia papyrifera is a widely distributed economic tree species, and it is also a pioneer species in adverse environments. In order to investigate the growth and adaptation mechanism of B. papyrifera under cadmium (Cd) contaminated soil, potted experiments were used with six-month treatments to study Cd enrichment and the transportation, morphological and physiological characteristics of B. papyrifera tissues. The results showed that Cd mainly accumulated in the root when the Cd concentration was high (14.71 mg/kg), and the root biomass was significantly reduced by Cd stress although Cd promoted the growth of seedlings. The bioconcentration factors (BCF) increased with the increase in Cd concentration, and reached the maximum value of 0.21 at 14.71 mg/kg. On the contrary, translocation factor (TF) decreased significantly at 8.28–14.71 mg/kg Cd concentration. Cd not only led to the loose arrangement of the xylem vessels of leaves, but also changed the chlorophyll content. However, B. papyrifera could synthesize organic solutes such as soluble protein, soluble sugar and proline to reduce the intracellular osmotic potential. Our study proved that B. papyrifera has good tolerance to Cd stress and is a pioneer tree species for soil and ecological environment restoration.

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Phytoremediation of cadmium-contaminated soil through multipurpose tree species

Agroforestry Systems ◽

10.1007/s10457-017-0141-2 ◽

2017 ◽

Cited By ~ 2

Author(s):

Balwinder Kaur ◽

Baljit Singh ◽

Navneet Kaur ◽

Dhanwinder Singh

Keyword(s):

Contaminated Soil ◽

Tree Species ◽

Multipurpose Tree ◽

Multipurpose Tree Species ◽

Cadmium Contaminated Soil

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Study on cadmium accumulation characteristics of Solanum nigrum with different ploidies

E3S Web of Conferences ◽

10.1051/e3sconf/201913607012 ◽

2019 ◽

Vol 136 ◽

pp. 07012

Author(s):

Yunmin Huan ◽

Zhouyang Jiu ◽

Huixuan Zhou ◽

Haoran Zhang ◽

Yong Huang ◽

...

Keyword(s):

Contaminated Soil ◽

Translocation Factor ◽

Cadmium Accumulation ◽

Solanum Nigrum ◽

Pot Experiment ◽

Accumulation Factor ◽

Cadmium Content ◽

Accumulation Characteristics ◽

Cadmium Contaminated Soil

To study the cadmium accumulation characteristics of Solanum nigrum with different ploidies, the biomass, cadmium content and cadmium accumulation of diploid (Solanum photeinocarpum), tetraploid (Solanum photeinocarpum) and hexaploid (Solanum nigrum) were measured by a pot experiment. The results showed that the biomass of roots, stems, leaves and shoots of S. nigrum plants with different ploidy all ranked as follows: hexaploid > tetraploid > diploid. Cadmium content and cadmium accumulation in stems, leaves and shoots of hexaploid plants were significantly higher than those in tetraploid and diploid plants, and the cadmium translocation factor and translocation accumulation factor of hexaploid were the largest, too. Therefore, hexaploid S. nigrum had a highest ability to extract and transport cadmium, which can be used as an ideal plant for remediation of cadmium-contaminated soil.

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Changes in Proteome and Protein Phosphorylation Reveal the Protective Roles of Exogenous Nitrogen in Alleviating Cadmium Toxicity in Poplar Plants

International Journal of Molecular Sciences ◽

10.3390/ijms21010278 ◽

2019 ◽

Vol 21 (1) ◽

pp. 278 ◽

Cited By ~ 2

Author(s):

Jinliang Huang ◽

Xiaolu Wu ◽

Feifei Tian ◽

Qi Chen ◽

Pengrui Luo ◽

...

Keyword(s):

Contaminated Soil ◽

Cadmium Toxicity ◽

Fold Change ◽

P Value ◽

Cd Stress ◽

Fold Change Threshold ◽

N Treatment ◽

Change Threshold ◽

Exogenous Nitrogen ◽

Cadmium Contaminated Soil

Phytoremediation soil polluted by cadmium has drawn worldwide attention. However, how to improve the efficiency of plant remediation of cadmium contaminated soil remains unknown. Previous studies showed that nitrogen (N) significantly enhances cadmium uptake and accumulation in poplar plants. In order to explore the important role of nitrogen in plants’ responses to cadmium stress, this study investigates the poplar proteome and phosphoproteome difference between Cd stress and Cd + N treatment. In total, 6573 proteins were identified, and 5838 of them were quantified. With a fold-change threshold of > 1.3, and a p-value < 0.05, 375 and 108 proteins were up- and down-regulated by Cd stress when compared to the control, respectively. Compared to the Cd stress group, 42 and 89 proteins were up- and down-regulated by Cd + N treatment, respectively. Moreover, 522 and 127 proteins were up- and down-regulated by Cd + N treatment compared to the CK group. In addition, 1471 phosphosites in 721 proteins were identified. Based on a fold-change threshold of > 1.2, and a p-value < 0.05, the Cd stress up-regulated eight proteins containing eight phosphosites, and down-regulated 58 proteins containing 69 phosphosites, whereas N + Cd treatment up-regulated 86 proteins containing 95 phosphosites, and down-regulated 17 proteins containing 17 phosphosites, when compared to Cd stress alone. N + Cd treatment up-regulated 60 proteins containing 74 phosphosites and down-regulated 37 proteins containing 42 phosphosites, when compared to the control. Several putative responses to stress proteins, as well as transcriptional and translational regulation factors, were up-regulated by the addition of exogenous nitrogen following Cd stress. Especially, heat shock protein 70 (HSP70), 14-3-3 protein, peroxidase (POD), zinc finger protein (ZFP), ABC transporter protein, eukaryotic translation initiation factor (elF) and splicing factor 3 B subunit 1-like (SF3BI) were up-regulated by Cd + N treatment at both the proteome and the phosphoproteome levels. Combing the proteomic data and phosphoproteomics data, the mechanism by which exogenous nitrogen can alleviate cadmium toxicity in poplar plants was explained at the molecular level. The results of this study will establish the solid molecular foundation of the phytoremediation method to improve cadmium-contaminated soil.

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Effects of Straw Ash and Sewage Sludge on the Quality of Pakchoi in Cadmium Contaminated Soil

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.414.99 ◽

2011 ◽

Vol 414 ◽

pp. 99-105 ◽

Cited By ~ 1

Author(s):

Ya Lan Zhu ◽

Ming Li ◽

Qiao Yun Huang

Keyword(s):

Sewage Sludge ◽

Leaf Area ◽

Contaminated Soil ◽

Present Experiment ◽

Sugar Content ◽

Soluble Sugar ◽

Straw Ash ◽

Quality Production ◽

Cadmium Contaminated Soil

To investigate the effects of straw ash and sewage sludge on the quality and production of pakchoi grown in cadmium contaminated soil, the present experiment was designed to study the change of quality, production and Cd content of pakchoi for applying different amounts of straw ash and sewage sludge. The results showed that with increase of manure amount, pakchoi production , height ,leaf area and leaf number significantly increase,The Vc and soluble sugar content is a significant trend of rise; On the Cd2Cd4 pakchoi with contrast chlorophyll maximum increased 1.5-1.4 times, Vc increased 1.4-1.3 times, soluble sugar maximum increased 1.7-1.8 times; The pakchoi’ over ground and roots Cd content was significantly lower in the Cd2Cd4 decreased 70.8%-65.6% ,54.5%- 48.3%; The best recommended amount of manure is 40 g·kg-1 for pakchoi in cadmium contaminated soil.

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Effects of Nanoparticle Hydroxyapatite on Growth and Antioxidant System in Pakchoi (Brassica chinensis L.) from Cadmium-Contaminated Soil

Journal of Nanomaterials ◽

10.1155/2014/470962 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7 ◽

Cited By ~ 6

Author(s):

Zhangwei Li ◽

Jiaai Huang

Keyword(s):

Antioxidant Enzymes ◽

Vitamin C ◽

Contaminated Soil ◽

Plant Uptake ◽

Cd Stress ◽

Cd Uptake ◽

Brassica Chinensis ◽

Plant Shoots ◽

Control Samples ◽

Cadmium Contaminated Soil

The effects of nanoscale particle hydroxyapatite (nHAP) on biomass, Cd uptake, the level of chlorophyll, vitamin C, malondialdehyde (MDA), and the activities of antioxidant enzymes, including SOD, CAT, and POD in pakchoi in Cd-contaminated soil, were evaluated by conducting pot experiment. Results showed that, by application of the 5 g·kg−1, 10 g·kg−1, 20 g·kg−1, and 30 g·kg−1nHAP in 10 mg·kg−1Cd-contaminated soil, the biomass of plant increased by 7.97%, 13.21%, 19.53%, and 20.23%, respectively. In addition, the reduction of Cd in shoots was 27.12%, 44.20%, 50.91%, and 62.36% compared to control samples. It was found that the supplement of the nHAP can increase the level of chlorophyll and vitamin C and decrease the level of MDA in plant shoots. Furthermore, the increment activities of SOD, CAT, and POD can be observed after addition of nHAP in Cd-contaminated soil. The results confirmed that nHAP can be applied to reduce the plant uptake of Cd and resist the Cd stress in the plant in Cd-contaminated soil.

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Effect of bottom ash and soil contamination with cadmium on the chemical composition of maize

Agronomy Science ◽

10.24326/as.2016.2.2 ◽

2019 ◽

Vol 71 (2) ◽

pp. 11-29

Author(s):

JACEK ANTONKIEWICZ ◽

CZESŁAWA JASIEWICZ ◽

WOJCIECH KĘPKA ◽

AGNIESZKA KOWALEWSKA ◽

ROBERT PEŁKA ◽

...

Keyword(s):

Chemical Composition ◽

Soil Contamination ◽

Contaminated Soil ◽

Bottom Ash ◽

Translocation Factor ◽

Arable Soil ◽

Pot Experiment ◽

Considerable Reduction ◽

Maize Roots ◽

Cadmium Contaminated Soil

The experiment concerning the effect of furnace waste on the chemical composition of maize was conducted under conditions of a three-year pot experiment. The arable soil was amended with bottom ash in the amount of 23.33 g ∙ pot-1 as well as with increasing doses of cadmium (between 3 and 15 mg ∙ kg-1 soil d.m.). Introduction of ash and cadmium in the amount from 3 to 5 mg ∙ kg-1 d.m. to the soil had a significant effect on the increase of the yield of above-ground parts and roots of maize. The application of cadmium in doses from 7 to 15 mg ∙ kg-1 caused a considerable reduction in the yield of the tested plant. It was shown that the applied furnace ash influenced the decrease in the yielding of maize. Introduction of furnace ash to cadmium contaminated soil significantly influenced the increase in the content of Na, K, Mg, Ca and Si in maize biomass and the decrease in the content of P in maize. Among the studied elements, K was translocated from the roots to the above-ground parts most efficiently, and Na and Si – least efficiently, the evidence of which are the values of the translocation factor for these elements. The research shows that ash in cadmium contaminated soil influenced immobilization of phosphorus, and thereby limited the phytoavailability of this element. It was established that the above-ground parts took up more K, Mg, Ca, P, Si with the yield while and maize roots took up more Na. The lowest uptake of the studied metals by maize was observed in the treatment where only furnace ash was applied.

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