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BPA biodegradation driven by isolated strain SQ-2 and its metabolism mechanism elucidation. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Chintalapudi VK, Kanamarlapudi RKSL, Mallu UR, Muddada S. Characterization of biosorption potential of Brevibacillus biomass isolated from contaminated water resources for removal of Pb (II) ions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:2358-2374. [PMID: 35486460 DOI: 10.2166/wst.2022.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Various activities of different industries are found to be the main reason for water pollution with heavy metals. Use of microorganisms that are tolerant even of a high concentration of metal ions could be a valuable tool for remediation of contaminated water resources. In the present study, microorganisms that showed high resistance to lead ions were isolated and evaluated for biosorption efficiency for removal of lead ions from waste water. Biochemical identification and 16S rRNA gene sequence analysis indicated that the isolated strain was Brevibacillus. The conditions of pH, biomass concentration, temperature, time, agitation and Initial concentration of metal for biosorption of Pb (II) were optimized. Based on induction coupled plasma optical emission spectroscopy (ICP-OES) analysis, the biosorption efficiency of Brevibacillus at optimized conditions of initial metal concentration of 150 μg/mL, 1 g/L of biomass dose, pH 6.0, 40 °C, for 12 h at 80 rpm was 78.58% and the biosorption capacity (qe) is 128.58 mg/g of the biosorbent. Of the three isotherm models investigated, the Freundlich isotherm model was identified as a good fit with high correlation coefficient, while kinetic data followed the pseudo first order model as best fit. Surface characterization by scanning electron microscopy (SEM) analysis revealed morphological changes with a bulged rod-shape cell having metal depositions and rough texture. The presence of lead within the cell was detected by transmission emission microscopy (TEM). The key functional groups that participate in biosorption were analyzed by Fourier transform infrared (FTIR) spectroscopy and were found to be carboxyl, hydroxyl, amino and phosphate groups. From the real-time study, it proves that the biomass of Brevibacillus can be used as a promising biosorbent for removal of metals including lead from waste water.
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Affiliation(s)
- Vinay Kumar Chintalapudi
- R V Labs, 2-14-117-55, 3rd lane extension, Syamala nagar, Guntur, Andhra Pradesh, India; Department of Biotechnology, Koneru Lakshmaiah Education Foundation (KLEF), Deemed to be University, Greenfields, Vaddeswaram, Guntur-522502, Andhra Pradesh, India E-mail:
| | - Ramya Krishna S L Kanamarlapudi
- Department of Biotechnology, Koneru Lakshmaiah Education Foundation (KLEF), Deemed to be University, Greenfields, Vaddeswaram, Guntur-522502, Andhra Pradesh, India E-mail:
| | - Useni Reddy Mallu
- R V Labs, 2-14-117-55, 3rd lane extension, Syamala nagar, Guntur, Andhra Pradesh, India
| | - Sudhamani Muddada
- Department of Biotechnology, Koneru Lakshmaiah Education Foundation (KLEF), Deemed to be University, Greenfields, Vaddeswaram, Guntur-522502, Andhra Pradesh, India E-mail:
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3
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Crampon M, Soulier C, Sidoli P, Hellal J, Joulian C, Charron M, Guillemoto Q, Picot-Colbeaux G, Pettenati M. Dynamics of Soil Microbial Communities During Diazepam and Oxazepam Biodegradation in Soil Flooded by Water From a WWTP. Front Microbiol 2021; 12:742000. [PMID: 34912306 PMCID: PMC8667618 DOI: 10.3389/fmicb.2021.742000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/20/2021] [Indexed: 11/23/2022] Open
Abstract
The demand for energy and chemicals is constantly growing, leading to an increase of the amounts of contaminants discharged to the environment. Among these, pharmaceutical molecules are frequently found in treated wastewater that is discharged into superficial waters. Indeed, wastewater treatment plants (WWTPs) are designed to remove organic pollution from urban effluents but are not specific, especially toward contaminants of emerging concern (CECs), which finally reach the natural environment. In this context, it is important to study the fate of micropollutants, especially in a soil aquifer treatment (SAT) context for water from WWTPs, and for the most persistent molecules such as benzodiazepines. In the present study, soils sampled in a reed bed frequently flooded by water from a WWTP were spiked with diazepam and oxazepam in microcosms, and their concentrations were monitored for 97 days. It appeared that the two molecules were completely degraded after 15 days of incubation. Samples were collected during the experiment in order to follow the dynamics of the microbial communities, based on 16S rRNA gene sequencing for Archaea and Bacteria, and ITS2 gene for Fungi. The evolution of diversity and of specific operating taxonomic units (OTUs) highlighted an impact of the addition of benzodiazepines, a rapid resilience of the fungal community and an evolution of the bacterial community. It appeared that OTUs from the Brevibacillus genus were more abundant at the beginning of the biodegradation process, for diazepam and oxazepam conditions. Additionally, Tax4Fun tool was applied to 16S rRNA gene sequencing data to infer on the evolution of specific metabolic functions during biodegradation. It finally appeared that the microbial community in soils frequently exposed to water from WWTP, potentially containing CECs such as diazepam and oxazepam, may be adapted to the degradation of persistent contaminants.
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Affiliation(s)
- Marc Crampon
- Bureau de Recherches Géologiques et Minières, Orléans, France
| | - Coralie Soulier
- Bureau de Recherches Géologiques et Minières, Orléans, France
| | - Pauline Sidoli
- Bureau de Recherches Géologiques et Minières, Orléans, France
| | - Jennifer Hellal
- Bureau de Recherches Géologiques et Minières, Orléans, France
| | | | - Mickaël Charron
- Bureau de Recherches Géologiques et Minières, Orléans, France
| | - Quentin Guillemoto
- Bureau de Recherches Géologiques et Minières, Orléans, France.,UMR 7619 METIS, Sorbonne Université, Paris, France
| | | | - Marie Pettenati
- Bureau de Recherches Géologiques et Minières, Orléans, France
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Polrot A, Kirby JR, Birkett JW, Sharples GP. Combining sediment management and bioremediation in muddy ports and harbours: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117853. [PMID: 34364113 DOI: 10.1016/j.envpol.2021.117853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/15/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
This paper reviews two important sources of innovation linked to the maritime environment and more importantly to ports: the potential coupling of sediment management and (bio)remediation. The detrimental effects of dredging are briefly considered, but the focus here is on a sustainable alternative method of managing the problem of siltation. This technique consists of fluidizing the sediment in situ, lowering the shear strength to maintain a navigable under-keel draught. Preliminary investigations show that through this mixing, aeration occurs, which results in a positive remediation effect as well. An overview of port contamination, remediation, and the recent research on aerobic (bio)degradation of port contaminants is made in order to show the potential for such innovative sediment management to reduce dredging need and remediate contaminated mud in ports. This review also highlights the lack of full-scale field applications for such potential remediation techniques, that remain largely confined to the laboratory scale.
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Affiliation(s)
- A Polrot
- School of Biological and Environmental Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK.
| | - J R Kirby
- School of Biological and Environmental Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK
| | - J W Birkett
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK
| | - G P Sharples
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK
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Zhang S, Li P, Li ZH. Toxicity of organotin compounds and the ecological risk of organic tin with co-existing contaminants in aquatic organisms. Comp Biochem Physiol C Toxicol Pharmacol 2021; 246:109054. [PMID: 33887478 DOI: 10.1016/j.cbpc.2021.109054] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/06/2021] [Accepted: 04/11/2021] [Indexed: 02/07/2023]
Abstract
Although organotin (OT) use is restricted worldwide, with the development of industry and agriculture, a large amount of OT is still discharged into aquatic environments. These OTs may interact with other pollutants that cause adverse biological effects (through bioaccumulation and/or toxicity), resulting in combined toxicity. Most research on OTs have focused on the exposure of a single analyte. Information on the toxicity of OTs and coexisting pollutants is quite limited, but is developing rapidly. This is the first review paper evaluating the current state of knowledge on the combined effects of OTs with co-pollutants. This paper reviews 1) the degradation of organotin; and 2) the combined toxicity of OTs and emerging pollutants (EP), heavy metals, and organic pollutants. Future research needs are discussed to better understand the risks associated with co-exposure to OT pollutants.
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Affiliation(s)
- Siqi Zhang
- Marine College, Shandong University, Weihai, Shandong 264209, China
| | - Ping Li
- Marine College, Shandong University, Weihai, Shandong 264209, China
| | - Zhi-Hua Li
- Marine College, Shandong University, Weihai, Shandong 264209, China.
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6
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Ti Q, Gu C, Cai J, Fan X, Zhang Y, Bian Y, Sun C, Jiang X. Understanding the role of bacterial cellular adsorption, accumulation and bioavailability regulation by biosurfactant in affecting biodegradation efficacy of polybrominated diphenyl ethers. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122382. [PMID: 32114132 DOI: 10.1016/j.jhazmat.2020.122382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/01/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Microbiological degradation is often considered as an important strategy to reduce the risks of polybrominated diphenyl ethers (PBDEs), which are environmentally widespread and harmful to human health and wildlife. With the well-identified aerobic bacteria, i.e. B. xenovorans LB400, the biodegradation of 2,2',4,4'-tetrabrominated diphenyl ether (BDE-47) occurred efficiently in conformity to the first-order kinetics and showed the strong dependence on initial concentration of pollutant and bioavailability regulation by biosurfactant. The mild increase of initial concentration of BDE-47 would enhance biodegradation whereas the excessive increase failed due to the oxidative stress or cytotoxicity to bacteria. Rather than the bacterial extracellular adsorption that was bioactively-mediated in thermodynamics, the intracellular accumulations at different time gradients showed the negative correlation with biodegradation efficiency of BDE-47. The spontaneous biodegradation of pollutant should be sourced from the gradual reduction of intracellular accumulation. Though the improved bioavailability of BDE-47 by sucrose fatty acid ester (SFAE) hardly altered the extracellular adsorption, the bacterial intracellular accumulation was indicated to increase continuously with used amount of biosurfactant and then decrease for the cellular morphological damage, and interestingly it appeared to be temporary reservoir for prompt delivery to biodegradation in light of the opposite variation tendency with time.
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Affiliation(s)
- Qingqing Ti
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Chenggang Gu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China.
| | - Jun Cai
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Xiuli Fan
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yinping Zhang
- Nanjing Normal University Center for Analysis and Testing, Nanjing, 210023, PR China
| | - Yongrong Bian
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China
| | - Cheng Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Xin Jiang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China
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Xiao X, Zhu S, Zou X, Song Y, Jiang J, Sheng GD. Uptake and elimination of butyl- and phenyltins by Ceratophyllum demersum L. CHEMOSPHERE 2020; 249:126113. [PMID: 32062208 DOI: 10.1016/j.chemosphere.2020.126113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
The widespread occurrence and distribution of organotin compounds (OTCs) in both marine and freshwater ecosystems has aroused considerable concerns in most countries worldwide. In this work, individual kinetics of the elimination of three butyltins and three phenyltins from C. demersum L. were systematically studied for over 240 h in clean water after a 48h period of accumulation. All OTCs were rapidly metabolized to nontoxic inorganic tin by C. demersum L. through stepwise debutylation or dephenylation. In addition to inorganic tin, monobutyltin (MBT) and monophenyltin (MPT) were the primary degradation products of tributyltin (TBT) and triphenyltin (TPT), with small amounts of dibutyltin (DBT) and diphenyltin (DPT), respectively, also being present. The estimated half-life of TPT (240 h) in C. demersum L. was longer than that of TBT (100 h), although the TPT was less hydrophobic. The corresponding degradation mechanisms may be attributed to a cascade of enzymatic reactions of CYP450 enzymes in C. demersum L. The pH played an important role in both plant growth and TBT degradation. Although pH 8.9 was more suitable for C. demersum L. growth, it uptook and metabolized more TBT at pH 5.0, which may be because the cationic species TBT+ (at pH 5.0) was metabolized more easily than the neutral hydroxide species TBTOH (at pH 8.9). C. demersum L. may thus be the plant with the most potential for the remediation of OTC-contaminated freshwater environments.
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Affiliation(s)
- Xiaoyu Xiao
- Department of Environmental Science and Engineering, School of Life Science, Jinggangshan University, Ji'an, 343009, China
| | - Shuhui Zhu
- Department of Environmental Science and Engineering, School of Life Science, Jinggangshan University, Ji'an, 343009, China
| | - Xiaoming Zou
- Department of Environmental Science and Engineering, School of Life Science, Jinggangshan University, Ji'an, 343009, China.
| | - Yongsheng Song
- Department of Environmental Science and Engineering, School of Life Science, Jinggangshan University, Ji'an, 343009, China
| | - Jing Jiang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - G Daniel Sheng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
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Deng Y, Wang L, Chen Y, Long Y. Optimization of staining with SYTO 9/propidium iodide: interplay, kinetics and impact on Brevibacillus brevis. Biotechniques 2020; 69:88-98. [PMID: 32393121 DOI: 10.2144/btn-2020-0036] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Fluorophores SYTO 9 and propidium iodide (PI) are extensively applied in medicine, food industry and environmental monitoring to assess the viability of bacteria. However, the actual performance of these dyes remains largely unknown. In addition, their effects on the physiology of cells have not been elucidated. Here we characterized the effects of these two dyes on Brevibacillus brevis under optimized staining. We found that SYTO 9 entered cells continuously while PI tended to adhere to the cell wall before entering the cell. In addition, results showed that a high amount of the dyes altered the physicochemical properties of membranes, improving their breakthrough. These results provide new perspectives and ideas for improving the characterization of bacterial viability using flow cytometry.
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Affiliation(s)
- Ying Deng
- Guangdong Key Laboratory of Environmental Pollution & Health, School of Environment, Jinan University, Guangzhou, 510632, China
| | - Lili Wang
- Guangdong Key Laboratory of Environmental Pollution & Health, School of Environment, Jinan University, Guangzhou, 510632, China
| | - Yujia Chen
- Guangdong Key Laboratory of Environmental Pollution & Health, School of Environment, Jinan University, Guangzhou, 510632, China
| | - Yan Long
- Guangdong Key Laboratory of Environmental Pollution & Health, School of Environment, Jinan University, Guangzhou, 510632, China
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9
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Molecular Recognition and Cell Surface Biochemical Response of Bacillus thuringiensis on Triphenyltin. Processes (Basel) 2019. [DOI: 10.3390/pr7060358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Triphenyltin (TPT) has severely polluted the environment, and it often coexists with metal ions, such as Cu2+. This paper describes the cell’s molecular recognition of TPT, the interaction between TPT recognition and Cu2+ biosorption, and their effect on cell permeability. We studied the recognition of TPT by Bacillus thuringiensis cells and the effect of TPT recognition on Cu2+ biosorption by using atomic force microscopy to observe changes in cell surface mechanical properties and cellular morphology and by using flow cytometry to determine the cell growth status and cell permeability. The results show that B. thuringiensis can quickly recognize different media. The adhesion force of cells in contact with Tween 80 was significantly reduced to levels that were much lower than that of cells in contact with PBS. Conversely, the cell surface adhesion force increased as TPT became more degraded. B. thuringiensis cells maintained their original morphology after 48 h of TPT treatment. The amount of Cu2+ adsorption by TPT-treated cells was positively correlated with the surface adhesion force (r = 0.966, P = 0.01). The cell adhesion force significantly decreased after Cu2+ adsorption, and cell recognition of TPT and/or Cu2+ hindered the entrance of 2’,7’-dichlorodihydrofluorescein diacetate (DCFH-DA) into the cell. The initial diffusion time of DCFH-DA into cells treated by PBS, Cu2+, TPT, and TPT+Cu2+ was 4, 10, 30, and 30 min, respectively, and the order of the fluorescence intensity was PBS >> Cu2+ > TPT > TPT+Cu2+. We conclude that changes in the cell surface properties of the microbe during recognition of pollutants depend on the contaminant’s properties. B. thuringiensis recognized TPT and secreted intracellular substances that not only enhanced the adsorption of Cu2+, but also formed a “barrier” on the cell surface that reduced permeability. These findings provide a novel insight into the mechanism of microbial removal of pollutants.
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Zhu Y, Chen K, Ding Y, Situ D, Li Y, Long Y, Wang L, Ye J. Metabolic and proteomic mechanism of benzo[a]pyrene degradation by Brevibacillus brevis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 172:1-10. [PMID: 30665150 DOI: 10.1016/j.ecoenv.2019.01.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/07/2019] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
Benzo[a]pyrene (BaP) is a model compound of polycyclic aromatic hydrocarbons. The relationship between its toxicity and some target biomolecules has been investigated. To reveal the interactions of BaP biodegradation and metabolic network, BaP intermediates, proteome, carbon metabolism and ion transport were analyzed. The results show that 76% BaP was degraded by Brevibacillus brevis within 7 d through the cleavage of aromatic rings with the production of 1-naphthol and 2-naphthol. During this process, the expression of xylose isomerase was induced for xylose metabolism, whereas, α-cyclodextrin could no longer be metabolized. Lactic acid, acetic acid and oxalic acid at 0.1-1.2 mg dm-3 were released stemming from their enhanced biosynthesis in the pathways of pyruvate metabolism and citrate cycle, while 5-7 mg dm-3 of PO43- were transported for energy metabolism. The relative abundance of 43 proteins was significantly increased for pyruvate metabolism, citrate cycle, amino acid metabolism, purine metabolism, ribosome metabolism and protein synthesis.
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Affiliation(s)
- Yueping Zhu
- Technology Research Center for Petrochemical Resources Clean Utilization of Guangdong Province, Faculty of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China
| | - Kaiyun Chen
- Child Developmental-Behavioral Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yingqi Ding
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Donglin Situ
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Yi Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Yan Long
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Lili Wang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Jinshao Ye
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China.
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de Castro TF, Varela Junior AS, Padilha FF, Droppa-Almeida D, Saalfeld GQ, Pires DM, Pereira JR, Corcini CD, Colares EP. Effects of exposure to triphenyltin (TPT) contaminant on sperm activity in adulthood of Calomys laucha exposed through breastfeeding. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:8280-8288. [PMID: 30706268 DOI: 10.1007/s11356-019-04365-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
Triphenyltin (TPT) is an organotin compound (OT), primarily used in agriculture and in the composition of antifouling paints for ships worldwide. Studies have showed its effects as an endocrine disrupter in several organisms by preventing enzymatic expression and causing reproductive toxicity. This study aimed to evaluate the effects of exposure to TPT, via breastfeeding, on reproductive physiology in the Calomys laucha species. The experimental design was compound of five groups, two controls and three with different doses of TPT. Moreover, females were exposed by gavage to the TPT for 20 days, from the 1st day postpartum to the 21st postnatal day (PND). Then, the pups were euthanized and the kinetics, organelles, and biochemistry of the sperm were evaluated. The results presented a reduction in total motility in the groups exposed to TPT. Regarding cellular organelles analysis, a loss in membrane integrity was evidenced; the functionality of mitochondria showed diminution followed by increased acrosome reaction. In conclusion, the TPT causes alteration of the reproductive parameters, decreasing the activity and sperm quality in individuals exposed in the breastfeeding phase.
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Affiliation(s)
- Tiane Ferreira de Castro
- Programa de Pós-Graduação em Ciências Fisiológicas Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Antônio Sergio Varela Junior
- Reprodução Animal Comparada- RAC, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | | | - Daniela Droppa-Almeida
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brazil.
| | - Graciela Quintana Saalfeld
- Programa de Pós-Graduação em Ciências Fisiológicas Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Diego Martins Pires
- Reprodução Animal - Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Jessica Ribeiro Pereira
- Reprodução Animal Comparada- RAC, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Carine Dahl Corcini
- Reprodução Animal - Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Elton Pinto Colares
- Reprodução Animal Comparada- RAC, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
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de Castro TF, Saalfeld GQ, Varela AS, Padilha FF, Santos KS, Pires DM, Pereira JR, Corcini CD, Colares EP. Triphenyltin exposition induces spermatic parameter alters of Calomys laucha species. CHEMOSPHERE 2018; 211:1176-1182. [PMID: 30223333 DOI: 10.1016/j.chemosphere.2018.08.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/11/2018] [Accepted: 08/11/2018] [Indexed: 06/08/2023]
Abstract
The present study aims to evaluate the influence of triphenyltin (TPT) exposure on reproductive physiology on Calomys laucha species, since this species inhabits regions susceptible to exposure to this contaminant. Animals exposed to the highest dose (10.0 mg/kg) presented signs of severe intoxication in only 7 days of exposure, demonstrating a higher sensitivity of this species to triphenyltin. The 10.0 mg TPT/kg dose was analyzed separately for short-term exposure and results suggest that exposure to this dose was severely detrimental to sperm activity. Among the main results obtained in the evaluation of sperm kinetics, a reduction in total motility was observed from the 0.5 mg TPT/kg group, accentuated according to the increase in the doses of TPT. In progressive motility, there was a decrease from the dose of 0.5 mg TPT/kg and maintained the plateau until the dose of 5.0 mg TPT/kg. It was also observed an increase in the distances and velocities average path, rectilinear and curvilinear in doses of 2.5 and 5.0 mg/kg. From the flow cytometry, evaluation a decrease in mitochondrial functionality was observed as the dose increased. Increased membrane fluidity was also observed from the 5.0 mg TPT/kg dose and the acrosome reaction presented higher values at doses of 0.5 and 5.0 mg TPT/kg. We can conclude that TPT causes impairment of the sperm activity, reducing it in individuals exposed in the adult phase.
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Affiliation(s)
- Tiane Ferreira de Castro
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil.
| | - Graciela Quintana Saalfeld
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Antonio Sergio Varela
- Reprodução Animal Comparada- RAC, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | | | | | - Diego Martins Pires
- Reprodução Animal - Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Jessica Ribeiro Pereira
- Reprodução Animal Comparada- RAC, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Carine Dahl Corcini
- Reprodução Animal - Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Elton Pinto Colares
- Reprodução Animal Comparada- RAC, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
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Wei K, Yin H, Peng H, Liu Z, Lu G, Dang Z. Characteristics and proteomic analysis of pyrene degradation by Brevibacillus brevis in liquid medium. CHEMOSPHERE 2017; 178:80-87. [PMID: 28319745 DOI: 10.1016/j.chemosphere.2017.03.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 02/07/2017] [Accepted: 03/11/2017] [Indexed: 06/06/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are widely spread in various ecosystems and are of great concern due to their potential toxicity, mutagenicity and carcinogenicity. Bioremediation has been proposed as an effective approach to remove PAHs. In this study, the physiological responses and proteome of Brevibacillus brevis under exposure to pyrene, a four-ring compound from PAHs family, were investigated. The changes of cell viability of B. brevis were observed during the degradation of pyrene by means of flow cytometry. The results indicated that pyrene stimulated superoxide dismutase (SOD) activity from 93.9 to 100.6 U mg-1 prot, whereas inhibited catalase (CAT) activity from 29.1 to 20.3 U mg-1 prot. The main compositions of B. brevis changed during pyrene degradation, with the proportion of unsaturated fatty acids increased by 13.4%. In addition, we performed a proteomic approach (two-dimensional gel electrophoresis and MALDI-TOF/TOF-MS) in order to explore how B. brevis survived upon treatment with pyrene. It was showed that the expression of 13 proteins increased whereas 10 other decreased after pyrene-treatment. The differentially expressed proteins were identified and the results indicated that they were involved in multiple biological processes including energy metabolism, biosynthesis, transmembrane transport and oxidative stress. Overall, these findings offered a new insights into the cellular response strategy developed by B. brevis to overcome the pyrene stress.
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Affiliation(s)
- Kun Wei
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Hua Yin
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China.
| | - Hui Peng
- Department of Chemistry, Jinan University, Guangzhou 510632, Guangdong, China
| | - Zehua Liu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Guining Lu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Zhi Dang
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
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14
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Process optimization of γ- Hexachlorocyclohexane degradation using three novel Bacillus sp . strains. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Triphenyltin recognition by primary structures of effector proteins and the protein network of Bacillus thuringiensis during the triphenyltin degradation process. Sci Rep 2017. [PMID: 28646170 PMCID: PMC5482883 DOI: 10.1038/s41598-017-04014-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Herein, triphenyltin (TPT) biodegradation efficiency and its transformation pathway have been elucidated. To better understand the molecular mechanism of TPT degradation, the interactions between amino acids, primary structures, and quaternary conformations of effector proteins and TPT were studied. The results verified that TPT recognition and binding depended on amino acid sequences but not on secondary, tertiary or quaternary protein structure. During this process, TPT could change the molecular weight and isoelectric point of effector proteins, induce their methylation or demethylation, and alter their conformation. The effector proteins, alkyl hydroperoxide reductase and acetyl-CoA acetyltransferase, recognizing TPT were crucial to TPT degradation. Electron transfer flavoprotein subunit alpha, phosphoenolpyruvate carboxykinase, aconitate hydratase, branched-chain alpha-keto acid dehydrogenase E1 component, biotin carboxylase and superoxide dismutase were related to energy and carbon metabolism, which was consistent with the results in vivo. The current findings develop a new approach for investigating the interactions between proteins and target compounds.
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16
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Yi W, Yang K, Ye J, Long Y, Ke J, Ou H. Triphenyltin degradation and proteomic response by an engineered Escherichia coli expressing cytochrome P450 enzyme. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 137:29-34. [PMID: 27907843 DOI: 10.1016/j.ecoenv.2016.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 11/15/2016] [Accepted: 11/18/2016] [Indexed: 06/06/2023]
Abstract
Although triphenyltin (TPT) degradation pathway has been determined, information about the enzyme and protein networks involved was severely limited. To this end, a cytochrome P450 hydroxylase (CYP450) gene from Bacillus thuringiensis was cloned and expressed in Escherichia coli BL21 (DE3), namely E. coli pET32a-CYP450, whose dosage at 1gL-1 could degrade 54.6% TPT at 1mgL-1 within 6 d through attacking the carbon-tin bonds of TPT by CYP450. Sequence analysis verified that the CYP450 gene had a 1214bp open reading frame, encoding a protein with 404 amino acids. Proteomic analysis determined that 60 proteins were significantly differentially regulated expression in E. coli pET32a-CYP450 after TPT degradation. The up-regulated proteins enriched in a network related to transport, cell division, biosynthesis of amino acids and secondary metabolites, and microbial metabolism in diverse environments. The current findings demonstrated for the first time that P450 received electrons transferring from NADH could effectively cleave carbon-metal bonds.
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Affiliation(s)
- Wenying Yi
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Kunliang Yang
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Jinshao Ye
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China; Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek 94598, CA, USA.
| | - Yan Long
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Jing Ke
- Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek 94598, CA, USA
| | - Huase Ou
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
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17
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Yong XY, Gu DY, Wu YD, Yan ZY, Zhou J, Wu XY, Wei P, Jia HH, Zheng T, Yong YC. Bio-Electron-Fenton (BEF) process driven by microbial fuel cells for triphenyltin chloride (TPTC) degradation. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:178-183. [PMID: 28340989 DOI: 10.1016/j.jhazmat.2016.10.047] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/20/2016] [Accepted: 10/21/2016] [Indexed: 06/06/2023]
Abstract
The intensive use of triphenyltin chloride (TPTC) has caused serious environmental pollution. In this study, an effective method for TPTC degradation was proposed based on the Bio-Electron-Fenton process in microbial fuel cells (MFCs). The maximum voltage of the MFC with graphite felt as electrode was 278.47% higher than that of carbon cloth. The electricity generated by MFC can be used for in situ generation of H2O2 to a maximum of 135.96μmolL-1 at the Fe@Fe2O3(*)/graphite felt composite cathode, which further reacted with leached Fe2+ to produce hydroxyl radicals. While 100μmolL-1 TPTC was added to the cathodic chamber, the degradation efficiency of TPTC reached 78.32±2.07%, with a rate of 0.775±0.021μmolL-1h-1. This Bio-Electron-Fenton driving TPTC degradation might involve in SnC bonds breaking and the main process is probably a stepwise dephenylation until the formation of inorganic tin and CO2. This study provides an energy saving and efficient approach for TPTC degradation.
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Affiliation(s)
- Xiao-Yu Yong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 211816, China
| | - Dong-Yan Gu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 211816, China
| | - Yuan-Dong Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 211816, China
| | - Zhi-Ying Yan
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology, Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China
| | - Jun Zhou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 211816, China
| | - Xia-Yuan Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 211816, China
| | - Ping Wei
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China
| | - Hong-Hua Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing TECH University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing TECH University, Nanjing 211816, China
| | - Tao Zheng
- Guangzhou Institute of Energy Conversion, Chinese Academy of Science, Nengyuan Road, Guangzhou 510640, China.
| | - Yang-Chun Yong
- Biofuels Institute, School of the Environment, Jiangsu University, Zhenjiang 212013, China; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Nanjing University of Science and Technology, Nanjing 210094, China.
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18
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Wang L, Yi W, Ye J, Qin H, Long Y, Yang M, Li Q. Interactions among triphenyltin degradation, phospholipid synthesis and membrane characteristics of Bacillus thuringiensis in the presence of d-malic acid. CHEMOSPHERE 2017; 169:403-412. [PMID: 27886543 DOI: 10.1016/j.chemosphere.2016.10.140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 10/26/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
Degradation pathway and surface biosorption of triphenyltin (TPT) by effective microbes have been investigated in the past. However, unclear interactions among membrane components and TPT binding and transport are still obstacles to understanding TPT biotransformation. To reveal the mechanism involved, the phospholipid expression, membrane potential, cellular mechanism and molecular dynamics between TPT and fatty acids (FAs) during the TPT degradation process in the presence of d-malic acid (DMA) were studied. The results show that the degradation efficiency of 1 mg L-1 TPT by Bacillus thuringiensis (1 g L-1) with 0.5 or 1 mg L-1 DMA reached values up to approximately 90% due to the promotion of element metabolism and cellular activity, and the depression of FA synthesis induced by DMA. The addition of DMA caused conversion of more linoleic acid into 10-oxo-12(Z)-octadecenoic acid, increased the membrane permeability, and alleviated the decrease in membrane potential, resulting in TPT transport and degradation. Fluorescence analysis reveals that the endospore of B. thuringiensis could act as an indicator for membrane potential and cellular activities. The current findings are advantageous for acceleration of biosorption, transport and removal of pollutants from natural environments.
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Affiliation(s)
- Linlin Wang
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China; Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek, 94598, CA, USA
| | - Wenying Yi
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Jinshao Ye
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China; Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek, 94598, CA, USA.
| | - Huaming Qin
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Yan Long
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Meng Yang
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China
| | - Qusheng Li
- Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, 510632, Guangdong, China
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19
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Wang L, Tang L, Wang R, Wang X, Ye J, Long Y. Biosorption and degradation of decabromodiphenyl ether by Brevibacillus brevis and the influence of decabromodiphenyl ether on cellular metabolic responses. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:5166-5178. [PMID: 26555880 DOI: 10.1007/s11356-015-5762-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
There is global concern about the effects of decabromodiphenyl ether (BDE209) on environmental and public health. The molecular properties, biosorption, degradation, accumulation, and cellular metabolic effects of BDE209 were investigated in this study to identify the mechanisms involved in the aerobic biodegradation of BDE209. BDE209 is initially absorbed by wall teichoic acid and N-acetylglucosamine side chains in peptidoglycan, and then, BDE209 is transported and debrominated through three pathways, giving tri-, hepta-, octa-, and nona-bromodiphenyl ethers. The C-C bond energies decrease as the number of bromine atoms on the diphenyl decreases. Polybrominated diphenyl ethers (PBDEs) inhibit protein expression or accelerate protein degradation and increase membrane permeability and the release of Cl(-), Na(+), NH4 (+), arabinose, proteins, acetic acid, and oxalic acid. However, PBDEs increase the amounts of K(+), Mg(2+), PO4 (3-), SO4 (2-), and NO3 (-) assimilated. The biosorption, degradation, accumulation, and removal efficiencies when Brevibacillus brevis (1 g L(-1)) was exposed to BDE209 (0.5 mg L(-1)) for 7 days were 7.4, 69.5, 16.3, and 94.6 %, respectively.
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Affiliation(s)
- Linlin Wang
- Research Center of Environmental Pollution Control and Remediation of Guangdong Province, Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Litao Tang
- Research Center of Environmental Pollution Control and Remediation of Guangdong Province, Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Ran Wang
- Research Center of Environmental Pollution Control and Remediation of Guangdong Province, Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Xiaoya Wang
- Research Center of Environmental Pollution Control and Remediation of Guangdong Province, Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Jinshao Ye
- Research Center of Environmental Pollution Control and Remediation of Guangdong Province, Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Yan Long
- Research Center of Environmental Pollution Control and Remediation of Guangdong Province, Key Laboratory of Environmental Exposure and Health of Guangzhou City, School of Environment, Jinan University, Guangzhou, Guangdong, 510632, China.
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20
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Correlation among phenyltins molecular properties, degradation and cellular influences on Bacillus thuringiensis in the presence of biosurfactant. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2015.09.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Genomic analysis of Brevibacillus thermoruber 423 reveals its biotechnological and industrial potential. Appl Microbiol Biotechnol 2015; 99:2277-89. [DOI: 10.1007/s00253-015-6388-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 01/02/2015] [Accepted: 01/03/2015] [Indexed: 11/25/2022]
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22
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Tang S, Bai J, Yin H, Ye J, Peng H, Liu Z, Dang Z. Tea saponin enhanced biodegradation of decabromodiphenyl ether by Brevibacillus brevis. CHEMOSPHERE 2014; 114:255-261. [PMID: 25113210 DOI: 10.1016/j.chemosphere.2014.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 05/01/2014] [Accepted: 05/03/2014] [Indexed: 06/03/2023]
Abstract
Decabromodiphenyl ether (BDE209) is a ubiquitous persistent pollutant and has contaminated the environment worldwide. To accelerate BDE209 elimination and reveal the mechanism concerned, the biosurfactant tea saponin enhanced degradation of BDE209 by Brevibacillus brevis was conducted. The results revealed that tea saponin could efficiently increase the solubility of BDE209 in mineral salts medium and improve its biodegradation. The degradation efficiency of 0.5 mg L(-1) BDE209 by 1 g L(-1) biomass with surfactant was up to 55% within 5d. Contact time was a significant factor for BDE209 biodegradation. BDE209 biodegradation was coupled with bioaccumulation, ion release and utilization, and debromination to lower brominated PBDE metabolites. During the biodegradation process, B. brevis metabolically released Na(+), NH4(+), NO2(-) and Cl(-), and utilized the nutrient ions Mg(2+), PO4(3-) and SO4(2-). GC-MS analysis revealed that the structure of BDE209 changed under the action of strain and nonabromodiphenyl ethers (BDE-208, -207 and -206), octabromodiphenyl ethers (BDE-203, -197 and -196) and heptabromodiphenyl ether (BDE-183) were generated by debromination.
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Affiliation(s)
- Shaoyu Tang
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, College of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Jieqiong Bai
- Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Hua Yin
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, College of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China.
| | - Jinshao Ye
- Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China.
| | - Hui Peng
- Department of Chemistry, Jinan University, Guangzhou 510632, Guangdong, China
| | - Zehua Liu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, College of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Zhi Dang
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, College of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
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23
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Gao J, Ye J, Ma J, Tang L, Huang J. Biosorption and biodegradation of triphenyltin by Stenotrophomonas maltophilia and their influence on cellular metabolism. JOURNAL OF HAZARDOUS MATERIALS 2014; 276:112-119. [PMID: 24866561 DOI: 10.1016/j.jhazmat.2014.05.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 04/27/2014] [Accepted: 05/11/2014] [Indexed: 06/03/2023]
Abstract
Triphenyltin (TPT), an endocrine disruptor, is polluting the global environment through its worldwide use. However, information concerning the mechanisms of TPT biodegradation and cellular metabolism is severely limited. Therefore, these processes were elucidated through experiments involving TPT biosorption and degradation, intracellular metabolite analysis, nutrient use, ion and monosaccharide release, cellular membrane permeability and protein concentration quantification. The results verified that TPT was initially adsorbed by the cell surface of Stenotrophomonas maltophilia and was subsequently transported and degraded intracellularly with diphenyltin and monophenyltin production. Cl(-), Na(+), arabinose and glucose release, membrane permeability and the extracellular protein concentration increased during TPT treatment, whereas K(+) and PO4(3-) utilization and intracellular protein concentration declined. The biosorption, degradation and removal efficiencies of TPT at 0.5mgL(-1) by 0.3gL(-1) viable cells at 10 d were 3.8, 77.8 and 86.2%, respectively, and the adsorption efficiency by inactivated cells was 72.6%.
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Affiliation(s)
- Jiong Gao
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Jinshao Ye
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China.
| | - Jiawen Ma
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Litao Tang
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Jie Huang
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
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24
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Ye J, Zhao H, Yin H, Peng H, Tang L, Gao J, Ma Y. Triphenyltin biodegradation and intracellular material release by Brevibacillus brevis. CHEMOSPHERE 2014; 105:62-67. [PMID: 24388446 DOI: 10.1016/j.chemosphere.2013.12.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 12/10/2013] [Accepted: 12/11/2013] [Indexed: 06/03/2023]
Abstract
Triphenyltin (TPT) is an endocrine disruptor that has polluted the global environment, and thus far, information regarding the mechanisms of TPT biodegradation and intracellular material release is limited. Here, TPT biodegradation was conducted by using Brevibacillus brevis. Degradation affecting factors, metabolite formation, ion and protein release, membrane permeability, and cell viability after degradation were investigated to reveal the biodegradation mechanisms. The results showed that TPT could be degraded simultaneously to diphenyltin and monophenyltin, with diphenyltin further degraded to monophenyltin, and ultimately to inorganic tin. During degradation process, B. brevis metabolically released Cl(-) and Na(+), and passively diffused Ca(2+). Protein release and membrane permeability were also enhanced by TPT exposure. pH ranging from 6.0 to 7.5 and relatively high biomass dosage in mineral salt medium improved TPT degradation. Biodegradation efficiency of 0.5 mg L(-1) TPT by 0.3 g L(-1)B. brevis at 25 °C for 5d was up to 80%.
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Affiliation(s)
- Jinshao Ye
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Hangjian Zhao
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Hua Yin
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, College of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China.
| | - Hui Peng
- Department of Chemistry, Jinan University, Guangzhou 510632, Guangdong, China
| | - Litao Tang
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Jiong Gao
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Yujia Ma
- Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, Guangdong, China
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25
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Liu X, Lee DJ. Thermodynamic parameters for adsorption equilibrium of heavy metals and dyes from wastewaters. BIORESOURCE TECHNOLOGY 2014; 160:24-31. [PMID: 24461254 DOI: 10.1016/j.biortech.2013.12.053] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 12/09/2013] [Accepted: 12/12/2013] [Indexed: 05/27/2023]
Abstract
This meta-analysis evaluates adsorption studies that report thermodynamic parameters for heavy metals and dyes from wastewaters. The adsorbents were derived from agricultural waste, industrial wastes, inorganic particulates, or some natural products. The adsorption mechanisms, derivation of thermodynamic relationships, and possible flaws made in such evaluation are discussed. This analysis shows that conclusions from the examined standard enthalpy and entropy changes are highly contestable. The reason for this flaw may be the poor physical structure of adsorbents tested, such that pore transport controlled the solute flux, leaving a surface reaction process near equilibrium.
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Affiliation(s)
- Xiang Liu
- Department of Environmental Engineering, Fudan University, Shanghai, China; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Duu-Jong Lee
- Department of Environmental Engineering, Fudan University, Shanghai, China; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan.
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26
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Panda AK, Bisht SS, DeMondal S, Senthil Kumar N, Gurusubramanian G, Panigrahi AK. Brevibacillus as a biological tool: a short review. Antonie van Leeuwenhoek 2014; 105:623-39. [DOI: 10.1007/s10482-013-0099-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 12/11/2013] [Indexed: 01/12/2023]
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27
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Salam JA, Das N. Lindane degradation by Candida VITJzN04, a newly isolated yeast strain from contaminated soil: kinetic study, enzyme analysis and biodegradation pathway. World J Microbiol Biotechnol 2013; 30:1301-13. [PMID: 24217897 DOI: 10.1007/s11274-013-1551-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 10/31/2013] [Indexed: 11/26/2022]
Abstract
A new yeast strain was isolated from sugarcane cultivation field which was able to utilize lindane as sole carbon source for growth in mineral medium. The yeast was identified and named as Candida sp. VITJzN04 based on a polyphasic approach using morphological, biochemical and 18S rDNA, D1/D2 and ITS sequence analysis. The isolated yeast strain efficiently degraded 600 mg L⁻¹ of lindane within 6 days in mineral medium under the optimal conditions (pH 7; temperature 30 °C and inoculum dosage 0.06 g L⁻¹) with the least half-life of 1.17 days and degradation constant of 0.588 per day. Lindane degradation was tested with various kinetic models and results revealed that the reaction could be described best by first-order and pseudo first-order models. In addition, involvement of the enzymes viz. dechlorinase, dehalogenase, dichlorohydroquinone reductive dechlorinase, lignin peroxidase and manganese peroxidase was noted during lindane degradation. Addition of H2O2 in the mineral medium showed 32 % enhancement of lindane degradation within 3 days. Based on the metabolites identified by GC-MS and FTIR analysis, sequential process of lindane degradation by Candida VITJzN04 was proposed. To the best of our knowledge, this is the first report of isolation and characterization of lindane-degrading Candida sp. and elucidation of enzyme systems during the degradation process.
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MESH Headings
- Biotransformation
- Candida/classification
- Candida/genetics
- Candida/isolation & purification
- Candida/metabolism
- Carbohydrates/analysis
- Carbon/metabolism
- Cluster Analysis
- Cytosol/chemistry
- DNA, Fungal/chemistry
- DNA, Fungal/genetics
- DNA, Intergenic/chemistry
- DNA, Intergenic/genetics
- DNA, Plant/chemistry
- DNA, Plant/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Hexachlorocyclohexane/metabolism
- Metabolic Networks and Pathways/genetics
- Molecular Sequence Data
- Phylogeny
- RNA, Ribosomal/genetics
- RNA, Ribosomal, 18S/genetics
- Saccharum/growth & development
- Sequence Analysis, DNA
- Soil Microbiology
- Temperature
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Affiliation(s)
- Jaseetha Abdul Salam
- Bioremediation Lab, Environmental Biotechnology Division, School of Biosciences and Technology, VIT University, Vellore, 632014, Tamil Nadu, India
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