1
|
Wang G, Chen M, Jiang L, Zhang Y. Nitenpyram biodegradation by a novel nitenpyram-degrading bacterium, Ochrobactrum sp. strain DF-1, and its novel degradation pathway. Front Microbiol 2023; 14:1209322. [PMID: 37520376 PMCID: PMC10373928 DOI: 10.3389/fmicb.2023.1209322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/21/2023] [Indexed: 08/01/2023] Open
Abstract
Nitenpyram is a neonicotinoid insecticide that is commonly found in the environment. However, its biodegradation by pure cultures of bacteria has not been widely investigated and the catabolic pathway (s) for nitenpyram metabolism remain elusive. In this study, the aerobic strain DF-1, isolated from a wastewater-treatment pool contaminated with nitenpyram. The strain was designated an Ochrobactrum sp. utilizing a combination of traditional methods and molecular ones. Strain DF-1 can use nitenpyram as a sole carbon or nitrogen source for growth. In liquid medium, 100 mg·L-1 nitenpyram was metabolized to undetectable levels within 10 days. Four metabolites were found by gas chromatography-mass spectrometry (GC-MS) analyses during nitenpyram degradation. According to the aforementioned data, a partial metabolic pathway of nitenpyram was proposed of strain DF-1. Inoculation of strain DF-1 promoted nitenpyram (10 mg·kg-1) degradation in either sterile or non-sterile soil. To our knowledge, this is the first characterization of nitenpyram degradation by a specific bacterium and likely to be exploited for the remediation of nitenpyram-contaminated sites.
Collapse
Affiliation(s)
- Guangli Wang
- Anhui Province Key Laboratory of Pollution Sensitive Materials and Environmental Remediation, School of Life Sciences, Huaibei Normal University, Huaibei, China
| | - Mengqing Chen
- Anhui Province Key Laboratory of Pollution Sensitive Materials and Environmental Remediation, School of Life Sciences, Huaibei Normal University, Huaibei, China
| | - Li Jiang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Yunfang Zhang
- Anhui Province Key Laboratory of Pollution Sensitive Materials and Environmental Remediation, School of Life Sciences, Huaibei Normal University, Huaibei, China
| |
Collapse
|
2
|
Qiao W, Liu G, Li M, Su X, Lu L, Ye S, Wu J, Edwards EA, Jiang J. Complete Reductive Dechlorination of 4-Hydroxy-chlorothalonil by Dehalogenimonas Populations. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:12237-12246. [PMID: 35951369 DOI: 10.1021/acs.est.2c02574] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile, TePN) is one of the most widely used fungicides all over the world. Its major environmental transformation product 4-hydroxy-chlorothalonil (4-hydroxy-2,5,6-trichloroisophthalonitrile, 4-OH-TPN) is more persistent, mobile, and toxic and is frequently detected at a higher concentration in various habitats compared to its parent compound TePN. Further microbial transformation of 4-OH-TPN has never been reported. In this study, we demonstrated that 4-OH-TPN underwent complete microbial reductive dehalogenation to 4-hydroxy-isophthalonitrile via 4-hydroxy-dichloroisophthalonitrile and 4-hydroxy-monochloroisophthalonitrile. 16S rRNA gene amplicon sequencing demonstrated that Dehalogenimonas species was enriched from 6% to 17-22% after reductive dechlorination of 77.24 μmol of 4-OH-TPN. Meanwhile, Dehalogenimonas copies increased by one order of magnitude and obtained a yield of 1.78 ± 1.47 × 108 cells per μmol Cl- released (N = 6), indicating that 4-OH-TPN served as the terminal electron acceptor for organohalide respiration of Dehalogenimonas species. A draft genome of Dehalogenimonas species was assembled through metagenomic sequencing, which harbors 30 putative reductive dehalogenase genes. Syntrophobacter, Acetobacterium, and Methanosarcina spp. were found to be the major non-dechlorinating populations in the microbial community, who might play important roles in the reductive dechlorination of 4-OH-TPN by the Dehalogenimonas species. This study first reports that Dehalogenimonas sp. can also respire on the seemingly dead-end product of TePN, paving the way to complete biotransformation of the widely present TePN and broadening the substrate spectrum of Dehalogenimonas sp. to polychlorinated hydroxy-benzonitrile.
Collapse
Affiliation(s)
- Wenjing Qiao
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Guiping Liu
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Mengya Li
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaojing Su
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lianghua Lu
- Jiangsu Provincial Academy of Environmental Science, Jiangsu Provincial Key Laboratory of Environmental Engineering, Nanjing 210036, China
| | - Shujun Ye
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
| | - Jichun Wu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
| | - Elizabeth A Edwards
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S 3E5, Canada
| | - Jiandong Jiang
- Department of Microbiology, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| |
Collapse
|
3
|
Xue C, Zheng J, Wang G, Feng L, Li F. Construction and Characterization of an Intergeneric Fusant That Degrades the Fungicides Chlorothalonil and Carbendazim. Front Microbiol 2022; 13:842736. [PMID: 35359711 PMCID: PMC8960146 DOI: 10.3389/fmicb.2022.842736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 02/11/2022] [Indexed: 11/13/2022] Open
Abstract
Bordetella sp. CTN-16 (GenBank FJ598326) can degrade chlorothalonil (CTN) but not carbendazim (MBC), and Microbacterium sp. MBC-3 (GenBank OK667229) can degrade MBC but not CTN. A functional strain BD2 was obtained by protoplast fusion of CTN-16 and MBC-3 to generate a fusant with improved degradation efficiency of CTN and MBC. Fusant-BD2 with eighth transfer on a medium containing CTN and two antibiotics was obtained. To identify and confirm the genetic relationship between parental strains and fusion strain BD2, scanning electron microscopy (SEM), random amplified polymorphic DNA (RAPD), and 16S ribosomal RNA (rRNA) gene sequences analysis were carried out. SEM analysis illustrated BD2 and its parents had some slight differences in the cell morphology. Fusant-BD2 not only possessed the same bands as parental strains but also had its specific bands analyzed through RAPD. The genetic similarity indices for BD2 and its parental strains CTN-16 and MBC-3 are 0.571 and 0.428, respectively. The degradation rates of CTN and MBC were 79.8% and 65.2% in the inorganic salt solution containing 50 mg·L−1 CTN and 50 mg·L−1 MBC, respectively, and the degradation efficiencies were better than the parental strains CTN-16 and MBC-3. This study provides a prospect for the application of fusion strain BD2 in bioremediation of CTN and MBC contaminated sites.
Collapse
|
4
|
Li H, Zhang P, Zhao Y, Zhang H. Low doses of carbendazim and chlorothalonil synergized to impair mouse spermatogenesis through epigenetic pathways. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109908. [PMID: 31706243 DOI: 10.1016/j.ecoenv.2019.109908] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
Pesticides have been extensively produced and used to help the agricultural production which leads to the contamination of the environment, soil, groundwater sources, and even foodstuffs. Fungicides carbendazim (CBZ) and chlorothalonil (Chl) are widely applied in agriculture and other aspects. CBZ or Chl have been reported to disrupt spermatogenesis and decrease semen quality. However, it is not understood the effects of pubertal exposure to low doses of CBZ and Chl together, and the underlying mechanisms. Therefore, the aim of current investigation was to explore the negative impacts of pubertal exposure to low doses of CBZ and Chl together on spermatogenesis and the role of epigenetic modifications in the process. We demonstrated that CBZ and Chl together synergize to decrease sperm motility in vitro (CBZ 1.0 + Chl 0.1, CBZ 10.0 + CHl 1.0, CBZ 100.0 + Chl 10 μM in incubation medium for 24 h) and sperm concentration and motility in vivo with ICR mice (CBZ 0.1 + Chl 0.1, CBZ 1.0 + CHl 1.0, CBZ 10.0 + Chl 10 mg/kg body weight; oral gavage for five weeks). CBZ + Chl significantly increase reactive oxygen species (ROS) and apoptosis by the increase in the protein level of caspase 8 in vitro. Moreover, CBZ + Chl synergized to disrupt mouse spermatogenesis with the disturbance in sperm production proteins and sperm proteins (VASA, A-Myb, STK31, AR, Acrosin). CBZ + Chl synergized to decrease the protein level of estrogen receptor alpha and the protein level of DNA methylation marker 5 mC in Leydig cells, and to increase the protein levels of histone methylation marker H3K9 and the methylation enzyme G9a in germ cells. Therefore, greater attention should be paid to the use of CBZ and Chl as pesticides to minimise their adverse impacts on spermatogenesis.
Collapse
Affiliation(s)
- Huatao Li
- College of Veterinary Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Pengfei Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Yong Zhao
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China.
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China.
| |
Collapse
|
5
|
Zhang Q, Liu H, Saleem M, Wang C. Biotransformation of chlorothalonil by strain Stenotrophomonas acidaminiphila BJ1 isolated from farmland soil. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190562. [PMID: 31827822 PMCID: PMC6894561 DOI: 10.1098/rsos.190562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Chlorothalonil is a widely used fungicide, but the contamination of soil and water environments by this chemical causes potential threats to biodiversity. Given the metabolic potential of soil microorganisms, there is a need for developing microbiological approaches to degrade persistent compounds, such as chlorothalonil, in contaminated sites. Here in this study, we isolated a bacterial strain (namely, BJ1) capable of degrading chlorothalonil from a chlorothalonil-contaminated farmland soil in the Shandong Province, China. Using 16S rDNA gene sequencing, morphological and biological characteristics, we identified the strain BJ1 as Stenotrophomonas acidaminiphila. The strain BJ1 uses chlorothalonil as a sole carbon source. At initial concentrations of 50, 100, 200 and 300 mg l-1, it degraded 91.5%, 89.4%, 86.5% and 83.5% of chlorothalonil after 96 h of inoculation under optimum conditions (30°C and pH 7.0). Two metabolites, methyl-2,5,6-trichloro-3-cyano-4-methoxy-benzoate and methyl-3-cyano-2,4,5,6-tetrachlorobenzoate, were detected and identified based on HPLC-MS analysis, which suggests that the strain BJ1 metabolized chlorothalonil through the hydroxylation of chloro-group and hydration of cyano-group. The results of this study highlight the great potential for this bacterium to be used in chlorothalonil pollution remediation.
Collapse
Affiliation(s)
- Qingming Zhang
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Hongyu Liu
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Muhammad Saleem
- Department of Biological Sciences, Alabama State University, Montgomery, AL 36101, USA
| | - Caixia Wang
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| |
Collapse
|
6
|
Zhang P, Zhao Y, Zhang H, Liu J, Feng Y, Yin S, Cheng S, Sun X, Min L, Li L, Shen W. Low dose chlorothalonil impairs mouse spermatogenesis through the intertwining of Estrogen Receptor Pathways with histone and DNA methylation. CHEMOSPHERE 2019; 230:384-395. [PMID: 31112861 DOI: 10.1016/j.chemosphere.2019.05.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 04/23/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
Recently, environment contaminants including pesticides, fungicides, mycotoxin and others chemicals have been suggested to be responsible for the decline in the human spermatozoa quality especially motility and the increase in infertility rate. Chlorothalonil is used widely for protection of vegetables and crops because it is a broad spectrum fungicide. It has been reported that chronic occupational exposure to fungicides was associated with poor spermatozoa morphology in young men. The pubertal period is very important for the male reproductive system development due to spermatogonial cell proliferation, the expansion of meiotic and haploid germ cells. Although some investigations have studied the male reproductive toxicity of chlorothalonil, almost no studies focused on spermatogenesis. The aim of our current investigation was to explore the impacts of chlorothalonil on spermatogenesis and the underlying mechanisms. It demonstrates: i) chlorothalonil decreased boar spermatozoa motility in vitro and increased the cell apoptosis; ii) chlorothalonil inhibited mouse spermatogenesis in vivo; iii) chlorothalonil disturbed spermatogenesis through the disruption of estrogen receptor signalling; iv) chlorothalonil disrupted histone methylation and DNA methylation which might be through estrogen signalling pathways. Due to the over use or incorrect use, chlorothalonil might cause serious problems to human health, especially spermatogenesis. Therefore we strongly recommend that greater attention should be paid to this fungicide to minimise its impact on human health especially spermatogenesis.
Collapse
Affiliation(s)
- Pengfei Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China; College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yong Zhao
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Jing Liu
- University Research Core, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yanni Feng
- College of Veterinary Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shen Yin
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shunfeng Cheng
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Xiaofeng Sun
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Lingjiang Min
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Lan Li
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Wei Shen
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China.
| |
Collapse
|
7
|
Feng NX, Yu J, Xiang L, Yu LY, Zhao HM, Mo CH, Li YW, Cai QY, Wong MH, Li QX. Co-metabolic degradation of the antibiotic ciprofloxacin by the enriched bacterial consortium XG and its bacterial community composition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 665:41-51. [PMID: 30772572 DOI: 10.1016/j.scitotenv.2019.01.322] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
Ciprofloxacin is a broad spectral and highly refractory antibiotic. It is an emerging pollutant. This study aimed to utilise co-metabolism as a means to degrade ciprofloxacin by a bacterial consortium. The stable bacterial consortium XG capable of efficiently degrading ciprofloxacin was successfully established through successive acclimation of indigenous microorganisms. The consortium XG was primarily consisted of Achromobacter, Bacillus, Lactococcus, Ochrobactrum, and Enterococcus as well as at least other five minor genera. A novel strain YJ17 with CIP-degrading ability was isolated from the consortium and identified as Ochrobactrum sp. The consortium XG utilised amino acids, carbohydrates, and carboxylic acids at a rate approximately 16.6-243-fold greater than the other carbon substrates, but only slow utilisation of ciprofloxacin as a sole carbon source. Ciprofloxacin can be co-metabolized along with many carbon sources, attaining degradation rates up to 63%. Glycyl-l-glutamic acid, d-cellobiose, and itaconic acid are among the substrates most favourable for co-metabolism. The metabolites of ciprofloxacin were identified by LC-QTOF-MS. Co-metabolic degradation of ciprofloxacin by consortium XG led to the removal of essential functional groups from parent compound, thus resulting in formation of metabolites with less bioactive potency. Finally, a possible biochemical pathway for the degradation of ciprofloxacin was proposed. Consortium XG possesses high potential for bioremediation of ciprofloxacin-contaminated environments in the presence of a co-substrate.
Collapse
Affiliation(s)
- Nai-Xian Feng
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Jiao Yu
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Lei Xiang
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA
| | - Le-Yi Yu
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hai-Ming Zhao
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ce-Hui Mo
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
| | - Yan-Wen Li
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Quan-Ying Cai
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ming-Hung Wong
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA
| |
Collapse
|
8
|
Hao Y, Zhang H, Zhang P, Yu S, Ma D, Li L, Feng Y, Min L, Shen W, Zhao Y. Chlorothalonil inhibits mouse ovarian development through endocrine disruption. Toxicol Lett 2019; 303:38-47. [PMID: 30586609 DOI: 10.1016/j.toxlet.2018.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 11/08/2018] [Accepted: 12/21/2018] [Indexed: 11/27/2022]
Abstract
Although many studies have investigated the toxic effects and even the reproductive toxicity of chlorothalonil, almost no studies have focused on the ovary, the organ of oocyte development. Puberty is a critical window for development of the female reproductive system. Therefore, this investigation aimed to explore the effects and underlying mechanisms of chlorothalonil at low doses on peripubertal mouse ovarian development. Chlorothalonil is frequently used in horticulture with short intervals between applications, therefore, vegetables and fruits may be potential sources of chlorothalonil contamination. For the first time, this study demonstrated that chlorothalonil inhibited ovarian development during puberty in mice, and at levels currently assumed to have no adverse health consequences for humans. Chlorothalonil exposure inhibited mouse ovarian development by increasing the number of primary follicles and decreasing the number of mature follicles. It acted by decreasing the levels of hormone production proteins, such as FSH receptor and estrogen receptor alpha, while increasing the levels of DNA repairing marker RAD51 and cell apoptosis. These results suggest that chlorothalonil may disrupt endocrine function and inhibit murine ovarian development. Therefore it may pose a potential health risk to female reproductive systems in other species, especially to the ovary.
Collapse
Affiliation(s)
- Yanan Hao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China; College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Pengfei Zhang
- College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China; College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shuai Yu
- College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China; College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Dongxue Ma
- College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China; College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Lan Li
- College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China; College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yanni Feng
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Lingjiang Min
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Wei Shen
- College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Yong Zhao
- College of Biological Sciences, Qingdao Agricultural University, Qingdao, 266109, PR China.
| |
Collapse
|
9
|
Atashgahi S, Liebensteiner MG, Janssen DB, Smidt H, Stams AJM, Sipkema D. Microbial Synthesis and Transformation of Inorganic and Organic Chlorine Compounds. Front Microbiol 2018; 9:3079. [PMID: 30619161 PMCID: PMC6299022 DOI: 10.3389/fmicb.2018.03079] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/29/2018] [Indexed: 12/26/2022] Open
Abstract
Organic and inorganic chlorine compounds are formed by a broad range of natural geochemical, photochemical and biological processes. In addition, chlorine compounds are produced in large quantities for industrial, agricultural and pharmaceutical purposes, which has led to widespread environmental pollution. Abiotic transformations and microbial metabolism of inorganic and organic chlorine compounds combined with human activities constitute the chlorine cycle on Earth. Naturally occurring organochlorines compounds are synthesized and transformed by diverse groups of (micro)organisms in the presence or absence of oxygen. In turn, anthropogenic chlorine contaminants may be degraded under natural or stimulated conditions. Here, we review phylogeny, biochemistry and ecology of microorganisms mediating chlorination and dechlorination processes. In addition, the co-occurrence and potential interdependency of catabolic and anabolic transformations of natural and synthetic chlorine compounds are discussed for selected microorganisms and particular ecosystems.
Collapse
Affiliation(s)
- Siavash Atashgahi
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | | | - Dick B. Janssen
- Department of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, Netherlands
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Alfons J. M. Stams
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Detmer Sipkema
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| |
Collapse
|
10
|
Xu XH, Liu XM, Zhang L, Mu Y, Zhu XY, Fang JY, Li SP, Jiang JD. Bioaugmentation of chlorothalonil-contaminated soil with hydrolytically or reductively dehalogenating strain and its effect on soil microbial community. JOURNAL OF HAZARDOUS MATERIALS 2018; 351:240-249. [PMID: 29550558 DOI: 10.1016/j.jhazmat.2018.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 03/02/2018] [Accepted: 03/03/2018] [Indexed: 05/24/2023]
Abstract
Although bioaugmentation of pollutant-contaminated sites is a great concern, there are few reports on the relationships among indigenous microbial consortia, exogenous inocula, and pollutants in a bioaugmentation process. In this study, bioaugmentation with Pseudochrobactrum sp. BSQ1 and Massilia sp. BLM18, which can hydrolytically and reductively dehalogenate chlorothalonil (TPN), respectively, was studied for its ability to remove TPN from soil; the alteration of the soil microbial community during the bioaugmentation process was investigated. The results showed that TPN (50 mg/kg) was completely removed in both bioaugmentation treatments within 35 days with half-lives of 6.8 and 9.8 days for strains BSQ1 and BLM18 respectively. In high concentration of TPN-treated soils (100 mg/kg), the bioaugmentation with strains BSQ1 and BLM18 respectively reduced 76.7% and 62.0% of TPN within 35 days. The TPN treatment significantly decreased bacterial richness and diversity and improved the growth of bacteria related to the elimination of chlorinated organic pollutants. However, little influence on soil microbial community was observed for each inoculation treatment (without TPN treatment), showing that TPN treatment is the main force for the shift in indigenous consortia. This study provides insights into the effects of halogenated fungicide application and bioaugmentation on indigenous soil microbiomes.
Collapse
Affiliation(s)
- Xi-Hui Xu
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China
| | - Xiao-Mei Liu
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China; College of Food Science and Engineering, Inner Mongolia Agricultural University, 010018, Hohhot, China
| | - Long Zhang
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China
| | - Yang Mu
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China
| | - Xu-Yuan Zhu
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China
| | - Jing-Ya Fang
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China
| | - Shun-Peng Li
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China
| | - Jian-Dong Jiang
- Department of Microbiology, Key Lab of Environmental Microbiology for Agriculture, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095, Nanjing, China; Jiangsu Key Lab for Solid Organic Waste Utilization, 210095, Nanjing, China.
| |
Collapse
|
11
|
Zhang Q, Saleem M, Wang C. Probiotic strain Stenotrophomonas acidaminiphila BJ1 degrades and reduces chlorothalonil toxicity to soil enzymes, microbial communities and plant roots. AMB Express 2017; 7:227. [PMID: 29275520 PMCID: PMC5742092 DOI: 10.1186/s13568-017-0530-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 12/19/2017] [Indexed: 11/10/2022] Open
Abstract
Chlorothalonil, a non-systemic and broad-spectrum fungicide, is widely used to control the pathogens of agricultural plants. Although microbial degradation of chlorothalonil is known, we know little about the colonization and degradation capacity of these microbes in the natural and semi-natural soil environments. Therefore, we studied the colonization and detoxification potential of a chlorothalonil degrading Stenotrophomonas acidaminiphila probiotic strain BJ1 in the soil under green conditions. The results from polymerase chain reaction-denaturing gradient gel electrophoresis demonstrated that probiotic strain BJ1 successfully colonized the soil by competing with the native biota. Moreover, the bacterial inoculation stimulated some members of indigenous soil microbial communities. Meantime, the degradation half-life of chlorothalonil decreased from 9.0 to 4.9 days in the soil environment. Moreover, the results from enzymatic activities and micronucleus test of Vicia faba root tips showed that the probiotic strain BJ1 reduced the ecotoxicity and genotoxicity of chlorothalonil in the soil. We suggest that probiotic strains like BJ1 could potentially alleviate the toxic effects of pesticides on soil microbes and plant roots under greenhouse conditions.
Collapse
|
12
|
Ma Y, Li Z, Yuan M, Chen L, Zhou S. Isolation and identification of 3-bromocarbazole-degrading bacteria. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2017; 52:796-801. [PMID: 28949809 DOI: 10.1080/03601234.2017.1356163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, a bacterial strain, CH-1, capable of degrading 3-bromocarbazole (3-BCZ) was isolated from a polluted soil. Based on its physio-biochemical characteristics and 16S rRNA genes, strain CH-1 was identified as a Stenotrophomonas sp. Strain CH-1 was able to degrade 70% of 50 mg/L 3-BCZ within 8 d at pH 7.0 and 30°C in mineral salt medium (MSM). During the process, the main intermediate metabolite was identified as (2E, 4Z)-6-(2-amino-5-bromophenyl)-2-hydroxy-6-oxhexa-2, 4-dienoic by gas (2E, 4Z)-6-(2-amino-5-bromophenyl)-2-hydroxy-6-oxhexa-2,4-dienoic via gas chromatograph-mass spectrometry (GC-MS) analysis. The metabolite disappeared after 14 d, suggesting that the metabolite can also be degraded by strain CH-1. 3-BCZ is a new persistent organic pollutant. This is the first report of the biodegradation of 3-BCZ. The results indicated that strain CH-1 may be a promising bacterial candidate for the bioremediation of environments polluted with polyhalogenated carbazoles (PHCs).
Collapse
Affiliation(s)
- Yun Ma
- a Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment , Zhejiang University of Technology , Hangzhou , People's Republic of China
| | - Zhiwei Li
- a Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment , Zhejiang University of Technology , Hangzhou , People's Republic of China
| | - Mei Yuan
- a Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment , Zhejiang University of Technology , Hangzhou , People's Republic of China
| | - Linhua Chen
- b Environmental Science Research Institute of Taizhou City , Taizhou , China
| | - Shanshan Zhou
- a Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment , Zhejiang University of Technology , Hangzhou , People's Republic of China
| |
Collapse
|
13
|
Ríos-Montes KA. Degradación del clorotalonilo por un consorcio microbiano aislado de humedales construidos en ensayos de laboratorio. ACTUALIDADES BIOLÓGICAS 2017. [DOI: 10.17533/udea.acbi.329003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
A escala de laboratorio se evaluó la degradación del clorotalonilo (CLT) por un consorcio microbiano aislado de la biopelícula formada en la grava de humedales construidos de flujo subsuperficial horizontal, usados para el tratamiento de agua residual agrícola, y se estimó el efecto del plaguicida en la dinámica de crecimiento de la comunidad de heterótrofos totales (HT) y la población de Pseudomonas spp. Una concentración de CTL de 0,6 mg l-1 y dos niveles de concentración de carbono orgánico disuelto (COD) de 20 y 100 mg l-1 (empleando glucosa como fuente de carbono), fueron usados en la experimentación llevada a cabo en una solución de agua residual sintética. Las variables respuesta fueron: concentración residual de CLT, concentración residual de COD, y recuento de unidades formadoras de colonias (UFC) de las poblaciones de HT y Pseudomonas spp. Las variables control que se midieron durante el proceso para determinar cambios en las condiciones fisicoquímicas del medio, fueron: conductividad eléctrica, oxígeno disuelto, pH y potencial redox. Se comprobó que el nivel de concentración de carbono orgánico afectó notablemente la degradación del CLT. Con 100 mg l-1 de COD se alcanzó 99,7% de degradación de CLT a las 168 horas del ensayo; en tanto que 45,1%, se alcanzó con 20 mg l-1 de COD. En el análisis cromatográfico no se detectaron productos de degradación.
Collapse
|
14
|
Korshunova TY, Mukhamatdyarova SR, Loginov ON. Molecular genetic and chemotaxonomic identification of the bacterium of the genus Ochrobactrum possessing oil-oxidizing and nitrogen-fixing activity. BIOL BULL+ 2017. [DOI: 10.1134/s1062359017050090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Teng Y, Zhang M, Yang G, Wang J, Christie P, Luo Y. Successive chlorothalonil applications inhibit soil nitrification and discrepantly affect abundances of functional genes in soil nitrogen cycling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:3562-3571. [PMID: 27878776 DOI: 10.1007/s11356-016-8080-4] [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: 07/05/2016] [Accepted: 11/08/2016] [Indexed: 06/06/2023]
Abstract
Broad-spectrum fungicide chlorothalonil (CTN) is successively applied into intensive agriculture soil. However, the impacts of successive CTN applications on soil nitrification and related microorganisms remain poorly understood. A microcosm study was conducted to reveal the effects of successive CTN applications on soil nitrification and functional genes involved in soil nitrogen (N) cycling. The CTN at the dosages of 5 mg kg-1 dry soil (RD) and 25 mg kg-1 dry soil (5RD) was successively applied into the test soil at 7-day intervals which resulted in the accumulations of CTN residues. After 28 days of incubation, CTN residues in the RD and 5RD treatments were 3.14 and 69.7 mg kg-1 dry soil respectively. Net nitrification rates in the RD and 5RD treatments were lower than that obtained from the blank control (CK). Real-time PCR analysis revealed that AOA and AOB amoA gene abundances were significantly decreased by CTN applications. Moreover, CTN applications also discrepantly decreased the abundances of functional genes involved in soil denitrification, with the exception of nosZ gene. Principal component analysis further supported the observation that successive CTN applications could result in enhanced ecological toxicity.
Collapse
Affiliation(s)
- Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Manyun Zhang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Guangmei Yang
- Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, China
| | - Jun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Peter Christie
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| |
Collapse
|
16
|
Yun H, Liang B, Qiu J, Zhang L, Zhao Y, Jiang J, Wang A. Functional Characterization of a Novel Amidase Involved in Biotransformation of Triclocarban and its Dehalogenated Congeners in Ochrobactrum sp. TCC-2. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:291-300. [PMID: 27966913 DOI: 10.1021/acs.est.6b04885] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Haloaromatic antimicrobial triclocarban (3,4,4'-trichlorocarbanilide, TCC) is a refractory contaminant which is frequently detected in various aquatic and sediment environments globally. However, few TCC-degrading communities or pure cultures have been documented, and functional enzymes involved in TCC biodegradation hitherto have not yet been characterized. In this study, a bacterial strain, Ochrobactrum sp. TCC-2, capable of degrading TCC under both aerobic and anaerobic conditions was isolated from a sediment sample. A novel amidase gene (tccA), responsible for the hydrolysis of the two amide bonds of TCC and its dehalogenated congeners 4,4'-dichlorocarbanilide (DCC) and carbanilide (NCC) to more biodegradable chloroaniline or aniline products, was cloned and characterized. TccA shares low amino acid sequence identity (27 to 38%) with other biochemically characterized amidases and contains the conserved catalytic triad (Ser-Ser-Lys) of the amidase signature enzyme family. TccA was stable over a pH range of 5.0 to 10.0 and at temperatures lower than 60 °C, and it was constitutively expressed in strain TCC-2. In contrast to the halogenated TCC and DCC, the nonchlorinated NCC was the preferred substrate for TccA. TccA also had hydrolysis activity to a broad spectrum of amide bonds in herbicides, insecticides, and chemical intermediates. The constitutive expression and broad substrate spectrum of TccA suggested strain TCC-2 may be potentially useful for bioremediation applications.
Collapse
Affiliation(s)
- Hui Yun
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- University of Chinese Academy of Sciences , Beijing, China
| | - Bin Liang
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
| | - Jiguo Qiu
- Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University , 210095, Nanjing, China
| | - Long Zhang
- Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University , 210095, Nanjing, China
| | - Youkang Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin, 150090, China
| | - Jiandong Jiang
- Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University , 210095, Nanjing, China
| | - Aijie Wang
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin, 150090, China
| |
Collapse
|
17
|
Wu M, Deng J, Li J, Li Y, Li J, Xu H. Simultaneous biological-photocatalytic treatment with strain CDS-8 and TiO 2 for chlorothalonil removal from liquid and soil. JOURNAL OF HAZARDOUS MATERIALS 2016; 320:612-619. [PMID: 27501883 DOI: 10.1016/j.jhazmat.2016.07.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/24/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
In this study, a novel chlorothalonil (CTN) degrading bacterial strain CDS-8, identified as Pseudomonas sp., was combined with photocatalyst titanium dioxide (TiO2) for the CTN degradation in liquid and soil. After 7day incubation, 90.73% of CTN was removed from mineral salt medium (MSM) by CDS-8 with the optimal condition at pH 7.0 and 30°C. Single biodegradation or photocatalytic degradation could not degrade CTN completely, and many toxic and persistent intermediate metabolites remained. However, simultaneous biological-photocatalytic treatments could markedly remove CTN and reduce the chemical oxygen demand (COD) which could not be removed by single biodegradation or photocatalytic degradation. In MSM, treatment with CDS-8/40mgL-1 TiO2 showed the highest COD removal rate (84.10%). Furthermore, combined CDS-8/TiO2 treatments could effectively degrade CTN in soil. In treatments with CDS-8/20mgkg-1 TiO2 of soil, the maximum CTN removal rate reached 97.55% in turned soils. However, with CDS-8/40mgkg-1 TiO2 of soil, the maximum CTN removal rate (94.94%) was found in static soil. In general, the combined biological-photocatalytic treatments provided a promising alternative candidate for the remediation of CTN-contaminated sites.
Collapse
Affiliation(s)
- Minghui Wu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Jing Deng
- Sichuan Tourism University, Chengdu, Sichuan, 610000, China
| | - Junjie Li
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan, 610064, China
| | | | - Jinze Li
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Heng Xu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan, 610064, China.
| |
Collapse
|
18
|
Zhang H, Nie Y, Zhang S, Wang WZ, Li H, Wang F, Lv X, Chen Z. Monitoring and probabilistic risk assessment of chlorothalonil residues in vegetables from Shandong province (China). Regul Toxicol Pharmacol 2016; 80:41-5. [DOI: 10.1016/j.yrtph.2016.05.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 10/21/2022]
|
19
|
Zhang M, Xu Z, Teng Y, Christie P, Wang J, Ren W, Luo Y, Li Z. Non-target effects of repeated chlorothalonil application on soil nitrogen cycling: The key functional gene study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 543:636-643. [PMID: 26613517 DOI: 10.1016/j.scitotenv.2015.11.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 11/10/2015] [Accepted: 11/10/2015] [Indexed: 05/20/2023]
Abstract
The widespread and increasing application of chlorothalonil (CTN) raises concerns about its non-target impacts, but little information is available on the effect of CTN on the key functional genes related to soil nitrogen (N) cycling, especially in the case of repeated applications. In the present study, a microcosm incubation was conducted to determine CTN residues and the impacts on the abundances of key functional genes related to N cycling after repeated CTN applications. The results demonstrated that repeated CTN applications at the recommended application rate and five times the recommended rate led to the accumulation of CTN residue in soil at concentrations of 5.59 and 78.79 mg kg(-1), respectively, by the end of incubation. Real time PCR (RT-PCR) revealed that repeated CTN applications had negative effects on the chiA and aprA gene abundances. There were significantly negative correlations between CTN residues and abundances of AOA and AOB genes. In addition, the abundances of key functional genes involved in soil denitrification were declined by repeated CTN applications with the sole exception of the nosZ gene. This study suggests that repeated CTN applications could lead to the accumulation of CTN residue and generate somewhat inconsistent and erratic effects on the abundances of key functional genes related to soil N cycling.
Collapse
Affiliation(s)
- Manyun Zhang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China; Environmental Futures Research Institute, School of Natural Sciences, Griffith University, Nathan, Brisbane, Queensland 4111, Australia
| | - Zhihong Xu
- Environmental Futures Research Institute, School of Natural Sciences, Griffith University, Nathan, Brisbane, Queensland 4111, Australia
| | - Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Peter Christie
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Jun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; Chongqing Research Academy of Environmental Sciences, Chongqing 401147, China
| | - Wenjie Ren
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhengao Li
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| |
Collapse
|
20
|
Yue W, Xiong M, Li F, Wang G. The isolation and characterization of the novel chlorothalonil-degrading strain Paracoccus sp. XF-3 and the cloning of the chd gene. J Biosci Bioeng 2015; 120:544-8. [PMID: 26100322 DOI: 10.1016/j.jbiosc.2015.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 02/02/2015] [Accepted: 03/23/2015] [Indexed: 11/28/2022]
Abstract
Chlorothalonil (CTN) is one of the most widely used fungicides and is often detected in the environment. Here, we report the isolation and characterization of a novel CTN-degrading bacterial strain XF-3 from long-term CTN-contaminated sites and identify it as a strain of the Paracoccus sp. The isolate could utilise CTN as the sole source of carbon and energy for growth. The optimal pH and temperature for degradation by XF-3 were 7.0 and 30°C, respectively. The CTN degradation gene was cloned by PCR. Although the results of a BLAST sequence search indicated that this gene has a 99% similarity with chd (a gene encoding the CTN hydrolytic dehalogenase), its hydrolytic efficiency for CTN was slightly greater than the chd from strain CTN-3. This is the first report of this gene from the genus Paracoccus. Therefore, there is a practical significance and a potential value of the isolated novel strain, XF-3.
Collapse
Affiliation(s)
- Wenlong Yue
- Department of Bioengineering, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, Anhui Province, PR China
| | - Minghua Xiong
- Department of Bioengineering, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, Anhui Province, PR China
| | - Feng Li
- Department of Bioengineering, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, Anhui Province, PR China
| | - Guangli Wang
- Department of Bioengineering, College of Life Sciences, Huaibei Normal University, 235000 Huaibei, Anhui Province, PR China.
| |
Collapse
|
21
|
Yang X, Zhang G, Wang F, Wang Y, Hu X, Li Q, Jia G, Liu Z, Wang Y, Deng R, Zeng X. Development of a colloidal gold-based strip test for the detection of chlorothalonil residues in cucumber. FOOD AGR IMMUNOL 2015. [DOI: 10.1080/09540105.2015.1018875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
22
|
Van Scoy AR, Tjeerdema RS. Environmental fate and toxicology of chlorothalonil. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 232:89-105. [PMID: 24984836 DOI: 10.1007/978-3-319-06746-9_4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Chlorothalonil is a broad spectrum, non systemic, organochlorine pesticide that was first registered in 1966 for turf grasses, and later for several food crops. Chlorthalonil has both a low Henry's law constant and vapor pressure, and hence, volatilization losses are limited. Although, chlorothalonil's water solubility is low, studies have shown it to be highly toxic to aquatic species. Mammalian toxicity (to rats and mice) is moderate, and produces adverse effects such as, tumors, eye irritation and weakness. Although, there is no indication that chlorothalonil is a human carcinogen,there is sufficient evidence from animal studies to classify it as a probable carcinogen.Chlorothalonil has a relatively low water solubility and is stable to hydrolysis.However, hydrolysis under basic conditions may occur and is considered to be a minor dissipation pathway. As a result of its high soil adsorption coefficient this fungicide strongly sorbs to soil and sediment. Therefore, groundwater contamination is minimal. Degradation via direct aqueous or foliar photolysis represents a major dissipation pathway for this molecule, and the photolysis rate is enhanced by natural photosensitizers such as dissolved organic matter or nitrate. In addition to photolysis, transformation by aerobic and anaerobic microbes is also a major degradation pathway. Under anaerobic conditions, hydrolytic dechlorination produces the stable metabolite 4-hydroxy-2,5,6-trichloroisophthalonitrile. Chlorothalonil is more efficiently degraded under neutral pH conditions and in soil containing a low carbon content.
Collapse
Affiliation(s)
- April R Van Scoy
- Department of Environmental Toxicology, College of Agricultural & Environmental Sciences, University of California, One Shields Ave, Davis, CA, 95616-8588, USA,
| | | |
Collapse
|
23
|
Wang G, Chen X, Yue W, Zhang H, Li F, Xiong M. Microbial degradation of acetamiprid by Ochrobactrum sp. D-12 isolated from contaminated soil. PLoS One 2013; 8:e82603. [PMID: 24386105 PMCID: PMC3873909 DOI: 10.1371/journal.pone.0082603] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 10/25/2013] [Indexed: 11/18/2022] Open
Abstract
Neonicotinoid insecticides are one of the most important commercial insecticides used worldwide. The potential toxicity of the residues present in environment to humans has received considerable attention. In this study, a novel Ochrobactrum sp. strain D-12 capable of using acetamiprid as the sole carbon source as well as energy, nitrogen source for growth was isolated and identified from polluted agricultural soil. Strain D-12 was able to completely degrade acetamiprid with initial concentrations of 0–3000 mg·L−1 within 48 h. Haldane inhibition model was used to fit the special degradation rate at different initial concentrations, and the parameters qmax, Ks and Ki were determined to be 0.6394 (6 h)−1, 50.96 mg·L−1 and 1879 mg·L−1, respectively. The strain was found highly effective in degrading acetamiprid over a wide range of temperatures (25–35°C) and pH (6–8). The effects of co-substrates on the degradation efficiency of acetamiprid were investigated. The results indicated that exogenously supplied glucose and ammonium chloride could slightly enhance the biodegradation efficiency, but even more addition of glucose or ammonium chloride delayed the biodegradation. In addition, one metabolic intermediate identified as N-methyl-(6-chloro-3-pyridyl)methylamine formed during the degradation of acetamiprid mediated by strain D-12 was captured by LC-MS, allowing a degradation pathway for acetamiprid to be proposed. This study suggests the bacterium could be a promising candidate for remediation of environments affected by acetamiprid.
Collapse
Affiliation(s)
- Guangli Wang
- College of Life Sciences, Huaibei Normal University, Huaibei, People's Republic of China
- * E-mail:
| | - Xiao Chen
- College of Life Sciences, Huaibei Normal University, Huaibei, People's Republic of China
| | - Wenlong Yue
- College of Life Sciences, Huaibei Normal University, Huaibei, People's Republic of China
| | - Hui Zhang
- College of Life Sciences, Huaibei Normal University, Huaibei, People's Republic of China
| | - Feng Li
- College of Life Sciences, Huaibei Normal University, Huaibei, People's Republic of China
| | - Minghua Xiong
- College of Life Sciences, Huaibei Normal University, Huaibei, People's Republic of China
| |
Collapse
|
24
|
Wang ZW, Huang J, Chen JY, Li FL. Time-dependent movement and distribution of chlorothalonil and chlorpyrifos in tomatoes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 93:107-111. [PMID: 23639722 DOI: 10.1016/j.ecoenv.2013.03.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Revised: 03/16/2013] [Accepted: 03/29/2013] [Indexed: 06/02/2023]
Abstract
Determining the distribution of pesticides in fruits is essential to eliminate pesticide residues during food processing. In this study, the dynamic distribution of two pesticides, chlorothalonil (CHT) and chlorpyrifos (CHP), were determined in different tomato parts following immersion in pesticide solutions. The concentrations of CHT and CHP in tomato followed an order of cuticle>plasma>pulp. However, the plasma initially accumulated the highest pesticide concentration. And the ratio of CHT concentration to that of CHP in plasma was about 2.1:1, similar to the ratio in solution, which suggested carpopodium as the entry site for the pesticides tested. The ratio in the cuticle was 0.02:1-0.06:1. This was consistent with the ratio of Kow for the two pesticides, manifesting the direct pesticide transfer from solution to cuticle. Following pesticide injection into tomato, the degradation of CHT over 96h was described by a first-order decay equation, Ctomato(t)CHT=C0×e(-0.0239t). The CHP concentration in tomato remained nearly constant with little degradation detected. Deducting the amount of degradation and migration, volatilization appeared to contribute the most amount of migration of CHT and CHP in tomato.
Collapse
Affiliation(s)
- Zhi-Wei Wang
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | | | | | | |
Collapse
|
25
|
Branco R, Cristóvão A, Morais PV. Highly sensitive, highly specific whole-cell bioreporters for the detection of chromate in environmental samples. PLoS One 2013; 8:e54005. [PMID: 23326558 PMCID: PMC3543429 DOI: 10.1371/journal.pone.0054005] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 12/07/2012] [Indexed: 12/04/2022] Open
Abstract
Microbial bioreporters offer excellent potentialities for the detection of the bioavailable portion of pollutants in contaminated environments, which currently cannot be easily measured. This paper describes the construction and evaluation of two microbial bioreporters designed to detect the bioavailable chromate in contaminated water samples. The developed bioreporters are based on the expression of gfp under the control of the chr promoter and the chrB regulator gene of TnOtChr determinant from Ochrobactrum tritici 5bvl1. pCHRGFP1 Escherichia coli reporter proved to be specific and sensitive, with minimum detectable concentration of 100 nM chromate and did not react with other heavy metals or chemical compounds analysed. In order to have a bioreporter able to be used under different environmental toxics, O. tritici type strain was also engineered to fluoresce in the presence of micromolar levels of chromate and showed to be as specific as the first reporter. Their applicability on environmental samples (spiked Portuguese river water) was also demonstrated using either freshly grown or cryo-preserved cells, a treatment which constitutes an operational advantage. These reporter strains can provide on-demand usability in the field and in a near future may become a powerful tool in identification of chromate-contaminated sites.
Collapse
Affiliation(s)
- Rita Branco
- IMAR, 3004-517 Coimbra, Portugal
- Escola Universitária Vasco da Gama, Mosteiro de S. Jorge de Milréu, Estrada da Conraria, Castelo Viegas – Coimbra, Portugal
| | - Armando Cristóvão
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, FCTUC, University of Coimbra, Coimbra, Portugal
| | - Paula V. Morais
- IMAR, 3004-517 Coimbra, Portugal
- Department of Life Sciences, FCTUC, University of Coimbra, Coimbra, Portugal
- * E-mail:
| |
Collapse
|
26
|
Liang B, Jiang J, Zhang J, Zhao Y, Li S. Horizontal transfer of dehalogenase genes involved in the catalysis of chlorinated compounds: evidence and ecological role. Crit Rev Microbiol 2011; 38:95-110. [DOI: 10.3109/1040841x.2011.618114] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
27
|
Wang G, Liang B, Li F, Li S. Recent advances in the biodegradation of chlorothalonil. Curr Microbiol 2011; 63:450-7. [PMID: 21879378 DOI: 10.1007/s00284-011-0001-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 08/15/2011] [Indexed: 11/25/2022]
Abstract
Chlorothalonil (TPN; 2,4,5,6-tetrachloroisophthalonitrile) has been widely used as a broad-spectrum chlorinated aromatic fungicide and its application resulted in global pollution commonly detected in the diverse ecosystems. Recently, microbial degradation of TPN has been studied extensively as an effective and environmental-friendly method to reduce TPN residue levels in the environment. This review summarizes the current knowledge of recent developments in the biodegradation of TPN. Diverse pure culture strains capable of degrading TPN were widely distributed among Proteobacteria and several metabolic pathways of TPN biotransformation were discovered. The two key genes (glutathione S-transferase and chlorothalonil hydrolytic dehalogenase coding gene) responsible for the conversion of TPN and recent findings for future practical bioremediation of TPN-contaminated ecosystem are also discussed.
Collapse
Affiliation(s)
- Guangli Wang
- Department of Microbiology, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 Jiangsu, People's Republic of China
| | | | | | | |
Collapse
|
28
|
Facilitation of bacterial adaptation to chlorothalonil-contaminated sites by horizontal transfer of the chlorothalonil hydrolytic dehalogenase gene. Appl Environ Microbiol 2011; 77:4268-72. [PMID: 21498744 DOI: 10.1128/aem.02457-10] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Horizontal transfer of the chlorothalonil hydrolytic dehalogenase gene (chd) is proposed based on the high conservation of the chd gene and its close association with a novel insertion sequence, ISOcsp1, in 16 isolated chlorothalonil-dechlorinating strains belonging to eight different genera. The ecological role of horizontal gene transfer is assumed to facilitate bacterial adaptation to chlorothalonil-contaminated sites, through detoxification of chlorothalonil to less toxic 2,4,5-trichloro-6-hydroxybenzene-1,3-dicarbonitrile.
Collapse
|
29
|
Shi XZ, Guo RJ, Takagi K, Miao ZQ, Li SD. Chlorothalonil degradation by Ochrobactrum lupini strain TP-D1 and identification of its metabolites. World J Microbiol Biotechnol 2010. [DOI: 10.1007/s11274-010-0631-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|