Publications by authors named "Pengcheng Su"

16 Publications

  • Page 1 of 1

Expansion and hazard risk assessment of glacial lake Jialong Co in the central Himalayas by using an unmanned surface vessel and remote sensing.

Sci Total Environ 2021 Aug 21;784:147249. Epub 2021 Apr 21.

State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Glacial lake outburst floods (GLOFs) are a severe hazard in the Himalayas. Glacial lake expansion and the corresponding volume increase play major roles in GLOFs as well as climate change. Furthermore, mass movement and dam conditions play a major role in the GLOF initiation process. Recently, because of global warming, glacial lakes in the central Himalayas have been expanding rapidly. Owing to a lack of systematic assessment and meticulous field surveys, people living downstream are at great risk of GLOFs. Comprehensive investigations and assessment of the relationships among lake expansion, lake dam conditions, and GLOF risk are urgently needed. In this study, we surveyed Jialong Co, a typical end-moraine dammed lake in Poiqu River in the central Himalayas by using Landsat and Sentinel satellite images from the past 32 years, field work, and depth measurements using an unmanned surface vessel on August 28, 2020. The results showed that Jialong Co had experienced slow-quick-slow expansion, increasing in area from 0.13 ± 0.03 to 0.60 ± 0.02 km. The lake bathymetric map revealed that the lake volume was (3.75 ± 0.38) × 10 m in 2020. Lake expansion occurred in the area from which the mother glacier retreated, indicating a close connection between the lake and its mother glacier and revealing that topography controlled the lake expansion process. Furthermore, thorough field work revealed that outlet dynamics and external water erosion are vulnerable elements in the disaster chain that initiate and affect the GLOF hazard of Jialong Co. Overall, this case study could help scholars understand the expansion mechanism of end-moraine dammed lakes and aid in hazard assessment of glacial lakes in the central Himalayas.
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http://dx.doi.org/10.1016/j.scitotenv.2021.147249DOI Listing
August 2021

Postsynthetic Modification of Metal-Organic Frameworks by Vapor-Phase Grafting.

Inorg Chem 2021 Jun 3. Epub 2021 Jun 3.

Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, P. R. China.

A vapor-phase grafting strategy is developed for the postsynthetic modification of metal-organic frameworks (MOFs). On the basis of the Schotten-Baumann reaction between acyl chloride (-COCl) and amino (-NH) groups and hydrolysis of -COCl, the carboxylated MOFs could be prepared through simple exposure in vaporized acyl chloride molecules and immersion in water. The modified MOFs have well-maintained crystalline structures and porosities and show substantially improved fluoride removal performance.
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http://dx.doi.org/10.1021/acs.inorgchem.1c00284DOI Listing
June 2021

Vapor-assisted self-conversion of basic carbonates in metal-organic frameworks.

Nanoscale 2021 Mar;13(9):5069-5076

Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, P.R. China.

Incorporation of nanoparticles has been considered as an efficient method for enhancing the adsorption performance of metal-organic frameworks (MOFs). Alkali metal compounds possess outstanding affinity to acidic CO2. In this study, a robust self-conversion strategy is reported for improving the carbon capture performance of MOFs, through directly transforming partial metal centers to basic carbonate (BC) nanoparticles. Based on the hydrolysis of coordination bonds induced by water impurity in solvents and the decarboxylation of linkers under thermal and alkaline conditions, the self-loading of BC in MOFs can be realized by solvent vapor-assisted thermal treatment. Since water impurity causes limited self-conversion and excess organic solvent can purify MOFs, the BC-MOF materials maintain good crystallinity and even show superior porosity. Owing to the increased specific surface areas, open metal sites, and alkalinity of BC, the prepared MOF composites exhibit substantially improved CO2 capture performance with good balance between capacity and selectivity. For example, after self-conversion with ethanol solvent, the CO2 adsorption capacity and CO2/N2 (15 : 85) selectivity at 298 K and 100 kPa increase from 3.7 mmol g-1 and 11.4 to 5.8 mmol g-1 and 29.2, respectively.
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http://dx.doi.org/10.1039/d0nr07700cDOI Listing
March 2021

The mixed application of organic and inorganic selenium shows better effects on incubation and progeny parameters.

Poult Sci 2021 Feb 2;100(2):1132-1141. Epub 2020 Nov 2.

Department of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China. Electronic address:

This experiment aims to study the effects of dietary selenium (Se) sources on the production performance, reproductive performance, and maternal effect of breeder laying hens. A total of 2,112 Hyline brown breeder laying hens of 42 wk of age were selected and randomly divided into 3 groups, with 8 repeats in each group and 88 chickens per repeat. The sources of dietary Se were sodium selenite (SS, added at 0.3 mg/kg), L-selenomethionine (L-SM, added at 0.2 mg/kg), and combination of SS and L-SM (SS 0.15 mg/kg + L-SM 0.15 mg/kg). The pretest period was 7 d, and the breeding period was 49 d. Compared with 0.3 mg/kg SS, the addition of 0.2 mg/kg L-SM in the diet significantly increased the hatchability (P < 0.05) and the Se content (P < 0.05) in egg yolk and chicken embryo tissues and improved the activity of yolk glutathione peroxidase (GSH-px) effectively (P < 0.05). Treatment with 0.2 mg/kg L-SM also reduced the content of yolk malondialdehyde (P < 0.05) and significantly improved the antioxidant performance of 1-day-old chicks, as manifested by increased activity of antioxidant enzymes (GSH-px, total antioxidant capacity and the ability to inhibit hydroxyl radicals) in serum, pectoral, heart, and liver (P < 0.05). This treatment decreased the malondialdehyde content (P < 0.05) and increased the expression of liver glutathione peroxidase 4 and deiodinase 1 mRNA (P < 0.05). Adding L-SM to the diets of chickens increased the hatchability of breeder eggs as well as the amount of Se deposited and antioxidant enzyme activity in breeder eggs and embryos. Compared with SS, L-SM was more effectively transferred from the mother to the embryo and offspring, showing efficient maternal nutrition. For breeder diets, the combination of organic and inorganic Se (0.15 mg/kg SS + 0.15 mg/kg L-SM) is an effective nutrient supplementation technology program for effectively improving the breeding performance of breeders and the antioxidant performance and health level of offspring chicks.
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http://dx.doi.org/10.1016/j.psj.2020.10.037DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7858146PMC
February 2021

Chicken cecal DNA methylome alteration in the response to Salmonella enterica serovar Enteritidis inoculation.

BMC Genomics 2020 Nov 23;21(1):814. Epub 2020 Nov 23.

College of Animal Science and Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, 271018, Shandong, China.

Background: Salmonella enterica serovar Enteritidis (SE) is one of the pathogenic bacteria, which affects poultry production and poses a severe threat to public health. Chicken meat and eggs are the main sources of human salmonellosis. DNA methylation is involved in regulatory processes including gene expression, chromatin structure and genomic imprinting. To understand the methylation regulation in the response to SE inoculation in chicken, the genome-wide DNA methylation profile following SE inoculation was analyzed through whole-genome bisulfite sequencing in the current study.

Results: There were 185,362,463 clean reads and 126,098,724 unique reads in the control group, and 180,530,750 clean reads and 126,782,896 unique reads in the inoculated group. The methylation density in the gene body was higher than that in the upstream and downstream regions of the gene. There were 8946 differentially methylated genes (3639 hypo-methylated genes, 5307 hyper-methylated genes) obtained between inoculated and control groups. Methylated genes were mainly enriched in immune-related Gene Ontology (GO) terms and metabolic process terms. Cytokine-cytokine receptor interaction, TGF-beta signaling pathway, FoxO signaling pathway, Wnt signaling pathway and several metabolism-related pathways were significantly enriched. The density of differentially methylated cytosines in miRNAs was the highest. HOX genes were widely methylated.

Conclusions: The genome-wide DNA methylation profile in the response to SE inoculation in chicken was analyzed. SE inoculation promoted the DNA methylation in the chicken cecum and caused methylation alteration in immune- and metabolic- related genes. Wnt signal pathway, miRNAs and HOX gene family may play crucial roles in the methylation regulation of SE inoculation in chicken. The findings herein will deepen the understanding of epigenetic regulation in the response to SE inoculation in chicken.
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http://dx.doi.org/10.1186/s12864-020-07174-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7681971PMC
November 2020

[Long-chain non-coding RNA MALAT1 regulates paclitaxel resistance of breast cancer cells by targeting miR-485-3p].

Nan Fang Yi Ke Da Xue Xue Bao 2020 May;40(5):698-702

Department of Breast and Thyroid, Northen Branch of Xinjiang Uygur Autonomous Region People's Hospital, Urumqi 830000, China.

Objective: To investigate the role of long-chain non-coding RNA MALAT1 in modulating paclitaxel resistance in breast cancer cells.

Methods: Breast cancer SK-BR-3 cells were treated with gradient concentrations of paclitaxel to induce paclitaxel resistance of the cells. The resistant cells were transfected with si-NC, si-MALAT1, pcDNA, pcDNA-MALAT1, miRNC, miR-485-3p mimics, si-MALAT1+anti-miR-NC, or si-MALAT1+anti-miR-485-3p liposomes. Following the transfections, the cells were examined for changes in IC of paclitaxel using MTT assay; the protein expression of P-gp, Bcl-2 and Bax were detected with Western blotting, and a dual luciferase reporter assay was used to detect the binding of MALAT1 to miR-485-3p.

Results: Compared with paclitaxel-sensitive SK-BR-3 cells, paclitaxel-resistant SK-BR-3 cells showed significantly increased the IC of paclitaxel with up-regulated MALAT1 expression and down-regulated miR-485-3p expression ( < 0.05). Silencing MALAT1 or overexpressing miR-485-3p obviously lowered the IC of paclitaxel and the expression of P-gp and Bcl-2 and increased the expression of Bax in SK-BR-3/PR cells ( < 0.05). miR-485-3p was identified as the target of MALAT1, and inhibiting miR-485-3p significantly reverse the effect of MALAT1 silencing on IC of paclitaxel and the expressions of P-gp, Bcl-2 and Bax in SK-BR-3/PR cells ( < 0.05).

Conclusions: MALAT1 can modulate paclitaxel resistance in breast cancer cells possibly by targeting miR-485-3p to down-regulate P-gp and Bcl-2 and up-regulate Bax.
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http://dx.doi.org/10.12122/j.issn.1673-4254.2020.05.13DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7277323PMC
May 2020

The correlated expression of immune and energy metabolism related genes in the response to Salmonella enterica serovar Enteritidis inoculation in chicken.

BMC Vet Res 2020 Jul 25;16(1):257. Epub 2020 Jul 25.

Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 271018, Taian, China.

Background: Salmonella enterica serovar Enteritidis (SE) is one of the food-borne pathogenic bacteria, which affects poultry production and poses severe threat to human health. The correlation of immune system and metabolism in chicken after SE inoculation is important but not clear. In the current study, we identified the expression of immune and energy metabolism related genes using quantitative PCR to evaluate the correlation between immune system and energy metabolism against SE inoculation in Jining Bairi chicken.

Results: ATP5G1, ATP5G3 and ND2 were significantly up-regulated at 1 dpi (day post inoculation), and ATP5E, ATP5G1, ATP5G3 were significantly down-regulated at 7 dpi (P < 0.05). IL-8 and IL-1β were significantly down-regulated at 1 dpi, IL-8 and IL-18 were significantly down-regulated at 3 dpi, IL-8 and BCL10 were significantly up-regulated at 7 dpi (P < 0.05).

Conclusions: These findings indicate that the correlation between immune and energy metabolism related genes gradually change with time points post SE inoculation, from one homeostasis to an opposite homeostasis with 3 dpi as a turning point. These results will pave the foundation for the relationship between immune system and energy metabolism in the response to SE inoculation in chicken.
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http://dx.doi.org/10.1186/s12917-020-02474-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382137PMC
July 2020

MicroRNA-152 Inhibits Cell Proliferation, Migration, and Invasion in Breast Cancer.

Oncol Res 2020 Feb 8;28(1):13-19. Epub 2019 Apr 8.

Department of Breast and Thyroid Surgery, People's Hospital of Xinjiang Uygur Autonomous RegionUrumqiP.R. China.

The aim of the present study was to investigate the roles of microRNA-152 (miR-152) in the initiation and progression of breast cancer. The expression level of miR-152 was detected in human breast cancer tissue and a panel of human breast cancer cell lines using qRT-PCR. Results found that miR-152 expression was significantly downregulated in breast cancer tissue samples compared to adjacent noncancerous tissues as well as in breast cancer cell lines. Overexpression of miR-152 significantly suppressed breast cancer cell proliferation, migration, and invasion. Luciferase reporter assay results found that ROCK1 is a direct and functional target gene of miR-152 in breast cancer. In addition, downexpression of ROCK1 could inhibit breast cancer cell proliferation, migration, and invasion. These findings indicate that miR-152 inhibited breast cancer growth and metastasis through negative regulation of ROCK1 expression. These data suggest that miR-152/ROCK1 pathway may be a useful therapeutic target for breast cancer treatment.
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http://dx.doi.org/10.3727/096504019X15519249902838DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7851537PMC
February 2020

Ultrathin metal-organic framework membrane production by gel-vapour deposition.

Nat Commun 2017 09 1;8(1):406. Epub 2017 Sep 1.

School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, 510632, People's Republic of China.

Ultrathin, molecular sieving membranes composed of microporous materials offer great potential to realize high permeances and selectivities in separation applications, but strategies for their production have remained a challenge. Here we show a route for the scalable production of nanometre-thick metal-organic framework (MOF) molecular sieving membranes, specifically via gel-vapour deposition, which combines sol-gel coating with vapour deposition for solvent-/modification-free and precursor-/time-saving synthesis. The uniform MOF membranes thus prepared have controllable thicknesses, down to ~17 nm, and show one to three orders of magnitude higher gas permeances than those of conventional membranes, up to 215.4 × 10 mol m s Pa for H, and H/CH, CO/CH and CH/CH selectivities of as high as 3,400, 1,030 and 70, respectively. We further demonstrate the in situ scale-up processing of a MOF membrane module (30 polymeric hollow fibres with membrane area of 340 cm) without deterioration in selectivity.MOF-based membranes have shown great promise in separation applications, but producing thin membranes that allow for high fluxes remains challenging. Here, the authors use a gel-vapour deposition strategy to fabricate composite membranes with less than 20 nm thicknesses and high gas permeances and selectivities.
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http://dx.doi.org/10.1038/s41467-017-00544-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5581339PMC
September 2017

Non-activation MOF arrays as a coating layer to fabricate a stable superhydrophobic micro/nano flower-like architecture.

Chem Commun (Camb) 2017 Jul;53(59):8340-8343

Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China.

Non-activation metal-organic framework (MOF) arrays are directly applied as a coating layer to fabricate a stable superhydrophobic micro/nano flower-like architecture. The MOF functionalized surfaces can be synthesized easily on different substrates without any activation procedure or modification by low free energy materials, which exhibit attractive performance in oil/water separation.
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http://dx.doi.org/10.1039/c7cc03409aDOI Listing
July 2017

Transformation of metal-organic frameworks for molecular sieving membranes.

Nat Commun 2016 Apr 19;7:11315. Epub 2016 Apr 19.

Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology and Collaborative Innovation Center of Membrane Separation and Water Treatment of Zhejiang Province, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China.

The development of simple, versatile strategies for the synthesis of metal-organic framework (MOF)-derived membranes are of increasing scientific interest, but challenges exist in understanding suitable fabrication mechanisms. Here we report a route for the complete transformation of a series of MOF membranes and particles, based on multivalent cation substitution. Through our approach, the effective pore size can be reduced through the immobilization of metal salt residues in the cavities, and appropriate MOF crystal facets can be exposed, to achieve competitive molecular sieving capabilities. The method can also be used more generally for the synthesis of a variety of MOF membranes and particles. Importantly, we design and synthesize promising MOF membranes candidates that are hard to achieve through conventional methods. For example, our CuBTC/MIL-100 membrane exhibits 89, 171, 241 and 336 times higher H2 permeance than that of CO2, O2, N2 and CH4, respectively.
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http://dx.doi.org/10.1038/ncomms11315DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4838892PMC
April 2016

Erratum to: Exon 19 deletion of epidermal growth factor receptor is associated with prolonged survival in brain metastases from non-small-cell lung cancer.

Tumour Biol 2015 Sep;36(9):7333-4

Department of Pathology, Shanxi Provincial Cancer Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030013, People's Republic of China.

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http://dx.doi.org/10.1007/s13277-015-3953-6DOI Listing
September 2015

Exon 19 deletion of epidermal growth factor receptor is associated with prolonged survival in brain metastases from non-small-cell lung cancer.

Tumour Biol 2015 Dec 21;36(12):9251-8. Epub 2015 Jun 21.

Department of Pathology, Shanxi Provincial Cancer Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030013, People's Republic of China.

Brain metastasis (BM) is a poor prognostic factor for non-small-cell lung cancer (NSCLC). Recent studies have shown that oral epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) were effective for BM from NSCLC with EGFR mutation. However, the relationship between EGFR mutations and prognosis of NSCLC BM patients remains to be determined. In this study, we investigated the impact of EGFR mutation status on the survival of BM patients from NSCLC. One hundred six patients with BM from NSCLC were retrospectively reviewed. Thirty-three subjects (24.3 %) were confirmed to have an exon 19 deletion, while another 33 had an exon 21 point mutation (L858R) (24.3 %). Log-rank test and Cox proportional hazards model were used to analyze the impact of variables on survival. The median survival of NSCLC with BM was 8 months. Log-rank test analysis showed that Eastern Cooperative Oncology Group Performance Status (ECOG-PS) at BM (p < 0.0001), control of primary tumor (p = 0.005), pathology (p = 0.01), EGFR mutations (p = 0.045), and 19 exon deletion (p = 0.007) were associated with a longer survival. In a Cox proportional hazards model, EGFR exon 19 deletion (p = 0.034), control of primary tumor (p = 0.024), and ECOG PS at BM (p = 0.006) were found to be independent prognostic factors. Moreover, there were prognostic differences between groups according to Radiation Therapy Oncology Group (RTOG) recursive partitioning analysis (RPA) classification system (p < 0.0001). Exon 19 deletion is an independent prognostic factor in BM from NSCLC. It should be integrated into the prognostic scoring classification system for NSCLC.
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http://dx.doi.org/10.1007/s13277-015-3653-2DOI Listing
December 2015

Results of a randomized and controlled clinical trial evaluating the efficacy and safety of combination therapy with Endostar and S-1 combined with oxaliplatin in advanced gastric cancer.

Onco Targets Ther 2013 25;6:925-9. Epub 2013 Jul 25.

Department of Medical Oncology, People's Hospital of Xinjiang, Urumqi, People's Republic of China.

Objectives: We aimed to evaluate the efficacy and safety of combination therapy of Endostar (recombinant human endostatin) and S-1 combined with oxaliplatin (SOX) in patients with advanced gastric cancer.

Methods: In this randomized, controlled trial, 165 late-stage gastric cancer patients were assigned to the experimental arm with Endostar in combination with SOX (80 patients) and the control arm with SOX alone (85 patients). The end points of this study included progression-free survival, response rate, and disease-control rate.

Results: There was no statistically significant difference in response rate between the experimental arm and the control arm (53.8% vs 42.4%, P=0.188). The difference in disease-control rate was also statistically insignificant between the two arms (85.0% vs 72.9%, P=0.188). Progression-free survival in the experimental arm was significantly higher than that in the control arm (15.0 months vs 12.0 months, P=0.0001). Common adverse events included immunosuppression, gastrointestinal distress, and neuropathy. There was no statistical difference in the incidences of adverse events.

Conclusion: Combination therapy of Endostar and SOX provides therapeutic benefits to advanced gastric cancer patients, with tolerable adverse effects.
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http://dx.doi.org/10.2147/OTT.S46487DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728266PMC
August 2013

Responses of Scirpus triqueter, soil enzymes and microbial community during phytoremediation of pyrene contaminated soil in simulated wetland.

J Hazard Mater 2011 Oct 5;193:45-51. Epub 2011 Aug 5.

Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China.

The aim of this study was to determine the enhancement of Scirpus triqueter in the dissipation of pyrene and the interaction of pyrene with plant, soil enzymes and microbial community. The results indicated that the dissipation ratios of pyrene in the rhizospheric and non-rhizospheric soil were 64.65 ± 3.86% and 54.49 ± 2.74%, respectively, and were higher than that in the unplanted soil (42.60 ± 0.71%) at 80 d after planting S. triqueter. The pyrene was toxic to S. triqueter, as evidenced by growth inhibition in height, diameter, shoot number and biomass during the planting period. The activities of dehydrogenase decreased significantly at the presence of pyrene in soils, and increased remarkably with the introduction of S. triqueter. It was found that the pyrene addition increased the ratios of fungal/total fatty acids and gram-positive/gram-negative, but the presence of S. triqueter decreased the ratios of gram-positive/gram-negative. A larger stress level was found in the pyrene treated soils without S. triqueter. The ratio of aerobic/anaerobic bacteria decreased with increasing pyrene concentration, but increased when S. triqueter was planted. The principal analysis of phospholipid fatty acid signatures revealed that microbial community structures in the rhizospheric and non-rhizospheric soil were similar, but different from those in the unplanted and control soil.
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http://dx.doi.org/10.1016/j.jhazmat.2011.07.094DOI Listing
October 2011

Degradation of diesel-originated pollutants in wetlands by Scirpus triqueter and microorganisms.

Ecotoxicol Environ Saf 2011 Oct 22;74(7):1967-72. Epub 2011 Jun 22.

School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China.

The wetland ecological environment near Huangpu-Yangtze River Estuary (HYRE) is deteriorating more and more seriously due to oil spills. In this paper, the simulation experiment of degradation was conducted to restore the diesel pollution in soils where the decontaminating potential of indigenous hydrocarbon-degrading microorganisms (HDMs) was evaluated with pot experiments and the co-activation between HDMs and native plant, Scirpus triqueter L.(STL), was investigated. The experimental results indicated that HDMs isolated from HYRE wetland had a degradation effect on diesel pollutants. Within 60 days, the removal ratio of diesel compared with initial amount could be up to 57.27 ± 8.18% in the HDMs inoculated soils at different concentrations of diesel. It was also found that the growth of Scirpus triqueter could enhance the degradation and remediation of diesel pollutants by increasing the populations of microorganisms. A community of STL and HDMs showed a remarkable capability of degrading hydrocarbon components in diesels. Under the combined effects of HDMs and STL (STL-Ms), the removal ratio of diesel pollutants could reach 67.42 ± 8.92%. For example, at 15,000 mg kg(-1) diesel concentration the removal ratios in the HDMs and STL-Ms soils were 67.41% and 72.62%, respectively. Moreover, the saturated hydrocarbons were more readily degraded than the aromatic hydrocarbons in treated soils showing a good degradation effect on the range of C(16)-C(24)n-alkanes, especially C(19). Positive correlations between microbial populations and diesel removal ratios were observed during the experiment. Microbial populations were found significantly higher in the HDMs soils and rhizosphere soils than in the control ones. The results confirmed that the HDMs and plant improved the biodegradation ability for diesel pollutants and they could be reasonably matched to cure and restore the ecological environment of oil-contaminated wetlands.
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http://dx.doi.org/10.1016/j.ecoenv.2011.06.005DOI Listing
October 2011
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