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Xu L, Chen H, Liang Z, Chen S, Xia Y, Zhu S, Yu M. Growth Reduction of Vibrionaceae and Microflora Diversity in Ice-Stored Pacific White Shrimp ( Penaeus vannamei) Treated with a Low-Frequency Electric Field. Foods 2024; 13:1143. [PMID: 38672816 PMCID: PMC11049124 DOI: 10.3390/foods13081143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
A novel storage technique that combines the low-frequency electric field (LFEF) and ice temperature was used to extend the shelf life of Pacific white shrimp (Penaeus vannamei). The study investigated the effect of LFEF treatment on the quality and microbial composition of Penaeus vannamei during storage at ice temperature. The results showed that the LFEF treatment significantly extended the shelf life of shrimp during storage at ice temperature. The total volatile base nitrogen (TVB-N) and pH of samples increased over time, while the total viable count (TVC) showed a trend of first decreasing and then increasing. Obviously, shrimp samples treated with LFEF had a lower pH, TVB-N and TVC values than the untreated samples (p < 0.05) at the middle and late stages of storage. LFEF treatment increased the diversity and altered the composition of the microbial communities in Penaeus vannamei. Additionally, the treatment led to a decrease in the relative abundance of dominant spoilage bacteria, including Aliivibrio, Photobacterium and Moritella, in Penaeus vannamei stored at ice temperature for 11 days. Furthermore, correlation analysis indicated that TVB-N and pH had a significant and positive correlation with Pseudoalteromonas, suggesting that Pseudoalteromonas had a greater impact on shrimp quality. This study supports the practical application of accelerated low-frequency electric field-assisted shrimp preservation as an effective means of maintaining shrimp meat quality.
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Affiliation(s)
- Lijuan Xu
- Department of Food and Environmental Engineering, Yangjiang Polytechnic, Yangjiang 529500, China; (L.X.); (H.C.); (Z.L.)
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Haiqiang Chen
- Department of Food and Environmental Engineering, Yangjiang Polytechnic, Yangjiang 529500, China; (L.X.); (H.C.); (Z.L.)
- Guangdong Provincial Engineering and Technology Research Center of Food Low Temperature Processing, Yangjiang 529566, China
| | - Zuanhao Liang
- Department of Food and Environmental Engineering, Yangjiang Polytechnic, Yangjiang 529500, China; (L.X.); (H.C.); (Z.L.)
- Guangdong Provincial Engineering and Technology Research Center of Food Low Temperature Processing, Yangjiang 529566, China
| | - Shanshan Chen
- Institute of Food and Health, Yangtze Delta Region Institute of Tsinghua University Zhejiang, Jiaxing 314006, China; (S.C.); (Y.X.)
| | - Yu Xia
- Institute of Food and Health, Yangtze Delta Region Institute of Tsinghua University Zhejiang, Jiaxing 314006, China; (S.C.); (Y.X.)
| | - Siming Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ming Yu
- Department of Food and Environmental Engineering, Yangjiang Polytechnic, Yangjiang 529500, China; (L.X.); (H.C.); (Z.L.)
- Guangdong Provincial Engineering and Technology Research Center of Food Low Temperature Processing, Yangjiang 529566, China
- Institute of Food and Health, Yangtze Delta Region Institute of Tsinghua University Zhejiang, Jiaxing 314006, China; (S.C.); (Y.X.)
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Chen Z, Li S, Liu Z, Sun Z, Mo L, Bao M, Yu Z, Zhang X. Diversity and distribution of culturable fouling bacteria in typical mariculture zones in Daya Bay, South China. Arch Microbiol 2022; 205:19. [PMID: 36482114 DOI: 10.1007/s00203-022-03361-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 11/22/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022]
Abstract
The diversity and distribution of culturable fouling bacteria in shellfish, fish and non-mariculture zones in Daya Bay were investigated by using a traditional culture-dependent approach combined with an analysis of bacterial 16S rRNA gene sequences. A total of 129 isolates of fouling bacteria belonging to 37 species in 25 genera were collected and identified, which indicated that the three different mariculture zones harbored abundant and diverse fouling bacterial community. At the genus level, Pseudomonas, Arcobacter and Curtobacterium dominated the fouling bacterial community. Moreover, approximately 46% of the 37 representative isolates could form biofilms. After comparing the diversity and distribution of the biofilm-forming bacteria in three different mariculture zones, it was concluded that the ratios of biofilm-forming bacteria in shellfish (68.4%) and fish (63.4%) in mariculture zones were much greater than those in non-mariculture (42.0%) zone. These results provide important information, for the first time, regarding the fouling bacterial community in typical mariculture zones in South China, which will establish a foundation to develop strategies for biofilm control and disease defense.
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Affiliation(s)
- Zihui Chen
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Si Li
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Zhiying Liu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Zuwang Sun
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Li Mo
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Minru Bao
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Zonghe Yu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China. .,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
| | - Xiaoyong Zhang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China. .,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
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Wang P, Zhao Y, Wang W, Lin S, Tang K, Liu T, Wood TK, Wang X. Mobile genetic elements used by competing coral microbial populations increase genomic plasticity. THE ISME JOURNAL 2022; 16:2220-2229. [PMID: 35760883 PMCID: PMC9381726 DOI: 10.1038/s41396-022-01272-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/30/2022] [Accepted: 06/15/2022] [Indexed: 01/22/2023]
Abstract
Intraspecies diversification and niche adaptation by members of the Vibrio genus, one of the most diverse bacterial genera, is thought to be driven by horizontal gene transfer. However, the intrinsic driving force of Vibrio species diversification is much less explored. Here, by studying two dominant and competing cohabitants of the gastric cavity of corals, we found that a phenotype influencing island (named VPII) in Vibrio alginolyticus was eliminated upon coculturing with Pseudoalteromonas. The loss of VPII reduced the biofilm formation and phage resistance, but activated motility, which may allow V. alginolyticus to expand to other niches. Mechanistically, we discovered that the excision of this island is mediated by the cooperation of two unrelated mobile genetic elements harbored in Pseudoalteromonas spp., an integrative and conjugative element (ICE) and a mobilizable genomic island (MGI). More importantly, these mobile genetic elements are widespread in cohabitating Gram-negative bacteria. Altogether, we discovered a new strategy by which the mobilome is employed by competitors to increase the genomic plasticity of rivals.
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Affiliation(s)
- Pengxia Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No.1119, Haibin Road, Nansha District, Guangzhou, 511458, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi Zhao
- College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Weiquan Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No.1119, Haibin Road, Nansha District, Guangzhou, 511458, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shituan Lin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No.1119, Haibin Road, Nansha District, Guangzhou, 511458, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kaihao Tang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No.1119, Haibin Road, Nansha District, Guangzhou, 511458, China
| | - Tianlang Liu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No.1119, Haibin Road, Nansha District, Guangzhou, 511458, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Thomas K Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, 16802-4400, USA
| | - Xiaoxue Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China.
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), No.1119, Haibin Road, Nansha District, Guangzhou, 511458, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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4
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Jia S, Liu Y, Zhuang S, Sun X, Li Y, Hong H, Lv Y, Luo Y. Effect of ε-polylysine and ice storage on microbiota composition and quality of Pacific white shrimp (Litopenaeus vannamei) stored at 0 °C. Food Microbiol 2019; 83:27-35. [DOI: 10.1016/j.fm.2019.04.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 04/11/2019] [Accepted: 04/15/2019] [Indexed: 12/29/2022]
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5
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Turgay E, Steinum T, Colquhoun D, Karataş S. Environmental biofilm communities associated with early‐stage common dentex (Dentex dentex) culture. J Appl Microbiol 2019; 126:1032-1043. [DOI: 10.1111/jam.14205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 01/03/2019] [Accepted: 01/14/2019] [Indexed: 11/29/2022]
Affiliation(s)
- E. Turgay
- Faculty of Aquatic Sciences Istanbul University Istanbul Turkey
| | - T.M. Steinum
- Faculty of Sciences Department of Molecular Biology and Genetics Istanbul University Istanbul Turkey
| | - D. Colquhoun
- Fish Health Research Group Norwegian Veterinary Institute Oslo Norway
| | - S. Karataş
- Faculty of Aquatic Sciences Istanbul University Istanbul Turkey
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6
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Zeng Z, Cai X, Wang P, Guo Y, Liu X, Li B, Wang X. Biofilm Formation and Heat Stress Induce Pyomelanin Production in Deep-Sea Pseudoalteromonas sp. SM9913. Front Microbiol 2017; 8:1822. [PMID: 28983293 PMCID: PMC5613676 DOI: 10.3389/fmicb.2017.01822] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 09/06/2017] [Indexed: 01/24/2023] Open
Abstract
Pseudoalteromonas is an important bacterial genus present in various marine habitats. Many strains of this genus are found to be surface colonizers on marine eukaryotes and produce a wide range of pigments. However, the exact physiological role and mechanism of pigmentation were less studied. Pseudoalteromonas sp. SM9913 (SM9913), an non-pigmented strain isolated from the deep-sea sediment, formed attached biofilm at the solid–liquid interface and pellicles at the liquid–air interface at a wide range of temperatures. Lower temperatures and lower nutrient levels promoted the formation of attached biofilm, while higher nutrient levels promoted pellicle formation of SM9913. Notably, after prolonged incubation at higher temperatures growing planktonically or at the later stage of the biofilm formation, we found that SM9913 released a brownish pigment. By comparing the protein profile at different temperatures followed by qRT-PCR, we found that the production of pigment at higher temperatures was due to the induction of melA gene which is responsible for the synthesis of homogentisic acid (HGA). The auto-oxidation of HGA can lead to the formation of pyomelanin, which has been shown in other bacteria. Fourier Transform Infrared Spectrometer analysis confirmed that the pigment produced in SM9913 was pyomelanin-like compound. Furthermore, we demonstrated that, during heat stress and during biofilm formation, the induction level of melA gene was significantly higher than that of the hmgA gene which is responsible for the degradation of HGA in the L-tyrosine catabolism pathway. Collectively, our results suggest that the production of pyomelanin of SM9913 at elevated temperatures or during biofilm formation might be one of the adaptive responses of marine bacteria to environmental cues.
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Affiliation(s)
- Zhenshun Zeng
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Xingsheng Cai
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Pengxia Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Yunxue Guo
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Xiaoxiao Liu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Baiyuan Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of MicrobiologyGuangzhou, China
| | - Xiaoxue Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
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7
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Mechanisms for Pseudoalteromonas piscicida-Induced Killing of Vibrios and Other Bacterial Pathogens. Appl Environ Microbiol 2017; 83:AEM.00175-17. [PMID: 28363962 DOI: 10.1128/aem.00175-17] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/27/2017] [Indexed: 12/11/2022] Open
Abstract
Pseudoalteromonas piscicida is a Gram-negative gammaproteobacterium found in the marine environment. Three strains of pigmented P. piscicida were isolated from seawater and partially characterized by inhibition studies, electron microscopy, and analysis for proteolytic enzymes. Growth inhibition and death occurred around colonies of P. piscicida on lawns of the naturally occurring marine pathogens Vibrio vulnificus, Vibrio parahaemolyticus, Vibrio cholerae, Photobacterium damselae, and Shewanella algae Inhibition also occurred on lawns of Staphylococcus aureus but not on Escherichia coli O157:H7 or Salmonella enterica serovar Typhimurium. Inhibition was not pH associated, but it may have been related to the secretion of a cysteine protease with strong activity, as detected with a synthetic fluorogenic substrate. This diffusible enzyme was secreted from all three P. piscicida strains. Direct overlay of the Pseudoalteromonas colonies with synthetic fluorogenic substrates demonstrated the activity of two aminopeptidase Bs, a trypsin-like serine protease, and enzymes reactive against substrates for cathepsin G-like and caspase 1-like proteases. In seawater cultures, scanning electron microscopy revealed numerous vesicles tethered to the outer surface of P. piscicida and a novel mechanism of direct transfer of these vesicles to V. parahaemolyticus Vesicles digested holes in V. parahaemolyticus cells, while the P. piscicida congregated around the vibrios in a predatory fashion. This transfer of vesicles and vesicle-associated digestion of holes were not observed in other bacteria, suggesting that vesicle binding may be mediated by host-specific receptors. In conclusion, we show two mechanisms by which P. piscicida inhibits and/or kills competing bacteria, involving the secretion of antimicrobial substances and the direct transfer of digestive vesicles to competing bacteria.IMPORTANCEPseudoalteromonas species are widespread in nature and reduce competing microflora by the production of antimicrobial compounds. We isolated three strains of P. piscicida and characterized secreted and cell-associated proteolytic enzymes, which may have antimicrobial properties. We identified a second method by which P. piscicida kills V. parahaemolyticus It involves the direct transfer of apparently lytic vesicles from the surface of the Pseudoalteromonas strains to the surface of Vibrio cells, with subsequent digestion of holes in the Vibrio cell walls. Enzymes associated with these vesicles are likely responsible for the digestion of holes in the cell walls. Pseudoalteromonas piscicida has potential applications in aquaculture and food safety, in control of the formation of biofilms in the environment, and in food processing. These findings may facilitate the probiotic use of P. piscicida to inactivate pathogens and may lead to the isolation of enzymes and other antimicrobial compounds of pharmacological value.
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Sun K, Liu J, Gao Y, Sheng Y, Kang F, Waigi MG. Inoculating plants with the endophytic bacterium Pseudomonas sp. Ph6-gfp to reduce phenanthrene contamination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:19529-19537. [PMID: 26263885 DOI: 10.1007/s11356-015-5128-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 07/27/2015] [Indexed: 06/04/2023]
Abstract
Plant organic contamination poses a serious threat to the safety of agricultural products and human health worldwide, and the association of endophytic bacteria with host plants may decrease organic pollutants in planta. In this study, we firstly determined the growth response and biofilm formation of endophytic Pseudomonas sp. Ph6-gfp, and then systematically evaluated the performance of different plant colonization methods (seed soaking (SS), root soaking (RS), leaf painting (LP)) for circumventing the risk of plant phenanthrene (PHE) contamination. After inoculation for 48 h, strain Ph6-gfp grew efficiently with PHE, oxalic acid, or malic acid as the sole sources of carbon and energy. Moreover, strain Ph6-gfp could form robust biofilms in LB medium. In greenhouse hydroponic experiments, strain Ph6-gfp could actively colonize inoculated plants internally, and plants colonized with Ph6-gfp showed a higher capacity for PHE removal. Compared with the Ph6-gfp-free treatment, the accumulations of PHE in Ph6-gfp-colonized plants via SS, RS, and LP were 20.1, 33.1, and 7.1 %, respectively, lower. Our results indicate that inoculating plants with Ph6-gfp could lower the risk of plant PHE contamination. RS was most efficient for improving PHE removal in whole plant bodies by increasing the cell numbers of Ph6-gfp in plant roots. The findings in this study provide an optimized method to strain Ph6-gfp reduce plant PAH residues, which may be applied to agricultural production in PAH-contaminated soil.
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Affiliation(s)
- Kai Sun
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang Road 1, Nanjing, 210095, China
| | - Juan Liu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang Road 1, Nanjing, 210095, China
| | - Yanzheng Gao
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang Road 1, Nanjing, 210095, China.
| | - Yuehui Sheng
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang Road 1, Nanjing, 210095, China
| | - Fuxing Kang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang Road 1, Nanjing, 210095, China
| | - Michael Gatheru Waigi
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang Road 1, Nanjing, 210095, China
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9
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Ersahin ME, Tao Y, Ozgun H, Spanjers H, van Lier JB. Characteristics and role of dynamic membrane layer in anaerobic membrane bioreactors. Biotechnol Bioeng 2015; 113:761-71. [DOI: 10.1002/bit.25841] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 09/14/2015] [Accepted: 09/24/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Mustafa Evren Ersahin
- Department of Watermanagement, Section Sanitary Engineering; Delft University of Technology; GA Delft The Netherlands
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department; Ayazaga Campus; Maslak 34469 Istanbul Turkey
| | - Yu Tao
- Department of Watermanagement, Section Sanitary Engineering; Delft University of Technology; GA Delft The Netherlands
- State Key Laboratory of Urban Water Resource and Environment; Harbin Institute of Technology; Harbin China
| | - Hale Ozgun
- Department of Watermanagement, Section Sanitary Engineering; Delft University of Technology; GA Delft The Netherlands
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department; Ayazaga Campus; Maslak 34469 Istanbul Turkey
| | - Henri Spanjers
- Department of Watermanagement, Section Sanitary Engineering; Delft University of Technology; GA Delft The Netherlands
| | - Jules B. van Lier
- Department of Watermanagement, Section Sanitary Engineering; Delft University of Technology; GA Delft The Netherlands
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10
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Torres-Crespo N, Martínez-Ruiz F, González-Muñoz MT, Bedmar EJ, De Lange GJ, Jroundi F. Role of bacteria in marine barite precipitation: a case study using Mediterranean seawater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 512-513:562-571. [PMID: 25647371 DOI: 10.1016/j.scitotenv.2015.01.044] [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: 08/01/2014] [Revised: 01/16/2015] [Accepted: 01/18/2015] [Indexed: 06/04/2023]
Abstract
Marine bacteria isolated from natural seawater were used to test their capacity to promote barite precipitation under laboratory conditions. Seawater samples were collected in the western and eastern Mediterranean at 250 m and 200 m depths, respectively, since marine barite formation is thought to occur in the upper water column. The results indicate that Pseudoalteromonas sp., Idiomarina sp. and Alteromonas sp. actually precipitate barite under experimental conditions. Barite precipitates show typical characteristics of microbial precipitation in terms of size, morphology and composition. Initially, a P-rich phase precipitates and subsequently evolves to barite crystals with low P contents. Under laboratory conditions barite formation correlates with extracellular polymeric substances (EPS) production. Barite precipitates are particularly abundant in cultures where EPS production is similarly abundant. Our results further support the idea that bacteria may provide appropriate microenvironments for mineral precipitation in the water column. Therefore, bacterial production in the past ocean should be considered when using Ba proxies for paleoproductivity reconstructions.
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Affiliation(s)
- N Torres-Crespo
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) Av. de las Palmeras 4, 18100 Armilla, Granada, Spain.
| | - F Martínez-Ruiz
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) Av. de las Palmeras 4, 18100 Armilla, Granada, Spain.
| | - M T González-Muñoz
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18002 Granada, Spain.
| | - E J Bedmar
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, 18008 Granada, Spain.
| | - G J De Lange
- Department of Earth Sciences, Geosciences Faculty, Utrecht University, Budapestlaan 4, P.O. Box 80021, 3584 CD Utrecht, The Netherlands.
| | - F Jroundi
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18002 Granada, Spain.
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11
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Mi ZH, Yu ZC, Su HN, Wang L, Chen XL, Pang X, Qin QL, Xie BB, Zhang XY, Zhou BC, Zhang YZ. Physiological and genetic analyses reveal a mechanistic insight into the multifaceted lifestyles ofPseudoalteromonassp. SM9913 adapted to the deep-sea sediment. Environ Microbiol 2015; 17:3795-806. [DOI: 10.1111/1462-2920.12823] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 02/22/2015] [Indexed: 12/01/2022]
Affiliation(s)
- Zi-Hao Mi
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Zi-Chao Yu
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Hai-Nan Su
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
- Collaborative Innovation Center of Deep Sea Biology; Shandong University; Jinan 250100 China
| | - Lei Wang
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
- Collaborative Innovation Center of Deep Sea Biology; Shandong University; Jinan 250100 China
| | - Xiuhua Pang
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
- Collaborative Innovation Center of Deep Sea Biology; Shandong University; Jinan 250100 China
| | - Qi-Long Qin
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Bin-Bin Xie
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Xi-Ying Zhang
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Bai-Cheng Zhou
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
| | - Yu-Zhong Zhang
- State Key Laboratory of Microbial Technology; Shandong University; Jinan 250100 China
- Marine Biotechnology Research Center; Shandong University; Jinan 250100 China
- Collaborative Innovation Center of Deep Sea Biology; Shandong University; Jinan 250100 China
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12
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Wesseling W. Beneficial biofilms in marine aquaculture? Linking points of biofilm formation mechanisms in <em>Pseudomonas aeruginosa</em> and <em>Pseudoalteromonas</em> species. AIMS BIOENGINEERING 2015. [DOI: 10.3934/bioeng.2015.3.104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Ecological roles and biotechnological applications of marine and intertidal microbial biofilms. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2014; 146:163-205. [PMID: 24817086 DOI: 10.1007/10_2014_271] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
This review is a retrospective of ecological effects of bioactivities produced by biofilms of surface-dwelling marine/intertidal microbes as well as of the industrial and environmental biotechnologies developed exploiting the knowledge of biofilm formation. Some examples of significant interest pertaining to the ecological aspects of biofilm-forming species belonging to the Roseobacter clade include autochthonous bacteria from turbot larvae-rearing units with potential application as a probiotic as well as production of tropodithietic acid and indigoidine. Species of the Pseudoalteromonas genus are important examples of successful surface colonizers through elaboration of the AlpP protein and antimicrobial agents possessing broad-spectrum antagonistic activity against medical and environmental isolates. Further examples of significance comprise antiprotozoan activity of Pseudoalteromonas tunicata elicited by violacein, inhibition of fungal colonization, antifouling activities, inhibition of algal spore germination, and 2-n-pentyl-4-quinolinol production. Nitrous oxide, an important greenhouse gas, emanates from surface-attached microbial activity of marine animals. Marine and intertidal biofilms have been applied in the biotechnological production of violacein, phenylnannolones, and exopolysaccharides from marine and tropical intertidal environments. More examples of importance encompass production of protease, cellulase, and xylanase, melanin, and riboflavin. Antifouling activity of Bacillus sp. and application of anammox bacterial biofilms in bioremediation are described. Marine biofilms have been used as anodes and cathodes in microbial fuel cells. Some of the reaction vessels for biofilm cultivation reviewed are roller bottle, rotating disc bioreactor, polymethylmethacrylate conico-cylindrical flask, fixed bed reactor, artificial microbial mats, packed-bed bioreactors, and the Tanaka photobioreactor.
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Broekaert K, Heyndrickx M, Herman L, Devlieghere F, Vlaemynck G. Molecular identification of the microbiota of peeled and unpeeled brown shrimp (Crangon crangon) during storage on ice and at 7.5 °C. Food Microbiol 2013; 36:123-34. [DOI: 10.1016/j.fm.2013.04.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 04/09/2013] [Accepted: 04/15/2013] [Indexed: 10/26/2022]
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Volatile compounds associated with Psychrobacter spp. and Pseudoalteromonas spp., the dominant microbiota of brown shrimp (Crangon crangon) during aerobic storage. Int J Food Microbiol 2013; 166:487-93. [DOI: 10.1016/j.ijfoodmicro.2013.08.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 07/10/2013] [Accepted: 08/14/2013] [Indexed: 11/21/2022]
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Smith KF, Schmidt V, Rosen GE, Amaral-Zettler L. Microbial diversity and potential pathogens in ornamental fish aquarium water. PLoS One 2012; 7:e39971. [PMID: 22970112 PMCID: PMC3435374 DOI: 10.1371/journal.pone.0039971] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 06/05/2012] [Indexed: 12/12/2022] Open
Abstract
Ornamental fishes are among the most popular and fastest growing categories of pets in the United States (U.S.). The global scope and scale of the ornamental fish trade and growing popularity of pet fish in the U.S. are strong indicators of the myriad economic and social benefits the pet industry provides. Relatively little is known about the microbial communities associated with these ornamental fishes or the aquarium water in which they are transported and housed. Using conventional molecular approaches and next generation high-throughput amplicon sequencing of 16S ribosomal RNA gene hypervariable regions, we characterized the bacterial community of aquarium water containing common goldfish (Carassius auratus) and Chinese algae eaters (Gyrinocheilus aymonieri) purchased from seven pet/aquarium shops in Rhode Island and identified the presence of potential pathogens. Our survey identified a total of 30 phyla, the most common being Proteobacteria (52%), Bacteroidetes (18%) and Planctomycetes (6%), with the top four phyla representing >80% of all sequences. Sequences from our water samples were most closely related to eleven bacterial species that have the potential to cause disease in fishes, humans and other species: Coxiella burnetii, Flavobacterium columnare, Legionella birminghamensis, L. pneumophila, Vibrio cholerae, V. mimicus. V. vulnificus, Aeromonas schubertii, A. veronii, A. hydrophila and Plesiomonas shigelloides. Our results, combined with evidence from the literature, suggest aquarium tank water harboring ornamental fish are an understudied source for novel microbial communities and pathogens that pose potential risks to the pet industry, fishes in trade, humans and other species.
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Affiliation(s)
- Katherine F. Smith
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
| | - Victor Schmidt
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
- The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | - Gail E. Rosen
- Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America
- Columbia University Center for Infection and Immunity, Mailman School of Public Health, New York, New York, United States of America
| | - Linda Amaral-Zettler
- The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
- Department of Geological Sciences, Brown University, Providence, Rhode Island, United States of America
- * E-mail:
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Shimada K, Itoh Y, Washio K, Morikawa M. Efficacy of forming biofilms by naphthalene degrading Pseudomonas stutzeri T102 toward bioremediation technology and its molecular mechanisms. CHEMOSPHERE 2012; 87:226-233. [PMID: 22285037 DOI: 10.1016/j.chemosphere.2011.12.078] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/28/2011] [Accepted: 12/29/2011] [Indexed: 05/31/2023]
Abstract
In natural environments, bacteria often exist in close association with surfaces and interfaces. There they form "biofilms", multicellular aggregates held together by an extracellular matrix. The biofilms confer on the constituent cells high resistance to environmental stresses and diverse microenvironments that help generate cellular heterogeneity. Here we report on the ability of Pseudomonas stutzeri T102 biofilm-associated cells, as compared with that of planktonic cells, to degrade naphthalene and survive in petroleum-contaminated soils. In liquid culture system, T102 biofilm-associated cells did not degrade naphthalene during initial hours of incubation but then degraded it faster than planktonic cells, which degraded naphthalene at a nearly constant rate. This delayed but high degradation activity of the biofilms could be attributed to super-activated cells that were detached from the biofilms. When the fitness of T102 biofilm-associated cells was tested in natural petroleum-contaminated soils, they were capable of surviving for 10 wk; by then T102 planktonic cells were mostly extinct. Naphthalene degradation activity in the soils that had been inoculated with T102 biofilms was indeed higher than that observed in soils inoculated with T102 planktonic cells. These results suggest that inoculation of contaminated soils with P. stutzeri T102 biofilms should enable bioaugmentation to be a more durable and effective bioremediation technology than inoculation with planktonic cells.
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Affiliation(s)
- Kohei Shimada
- Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University, N-10 W-5, Kita-ku, Sapporo, 060-0810 Hokkaido, Japan
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A truncated form of SpoT, including the ACT domain, inhibits the production of cyclic lipopeptide arthrofactin, and is associated with moderate elevation of guanosine 3',5'-bispyrophosphate level in Pseudomonas sp. MIS38. Biosci Biotechnol Biochem 2011; 75:1880-8. [PMID: 21979063 DOI: 10.1271/bbb.110042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Arthrofactin is a biosurfactant produced by Pseudomonas sp. MIS38. We have reported that transposon insertion into spoT (spoT::Tn5) causes moderate accumulation of guanosine 3',5'-bispyrophosphate (ppGpp) and abrogates arthrofactin production. To analyze the linkage of SpoT function and ablation of arthrofactin production, we examined the spoT::Tn5 mutation. The results showed that spoT::Tn5 is not a null mutation, but encodes separate segments of SpoT. Deletion of the 3' region of spoT increased the level of arthrofactin production, suggesting that the C-terminal region of SpoT plays a suppressive role. We evaluated the expression of a distinct segment of SpoT. Forced expression of the C-terminal region that contains the ACT domain resulted in the accumulation of ppGpp and abrogated arthrofactin production. Expression of the C-terminal segment also reduced MIS38 swarming and resulted in extensive biofilm formation, which constitutes the phenocopy of the spoT::Tn5 mutant.
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Sarkar S, Roy D, Mukherjee J. Enhanced protease production in a polymethylmethacrylate conico-cylindrical flask by two biofilm-forming bacteria. BIORESOURCE TECHNOLOGY 2011; 102:1849-1855. [PMID: 20947343 DOI: 10.1016/j.biortech.2010.09.091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 09/22/2010] [Accepted: 09/23/2010] [Indexed: 05/30/2023]
Abstract
A polymethylmethacrylate (PMMA) conico-cylindrical flask (CCF) with an inner arrangement consisting of eight equidistantly spaced rectangular strips mounted radially on a circular disk to provide additional surface area for microbial attachment was employed for protease production by two biofilm-forming bacteria, an intertidal gamma-Proteobacterium (DGII) and a chicken meat isolate, Virgibacillus pantothenticus. The flask design allowed comparison of protease production during cultivation with a hydrophilic (glass) or hydrophobic (PMMA) surface. Compared to the Erlenmeyer flask, the CCF allowed protease production that was 30% and 35% higher and growth that was 20% and 345% higher for DGII and V. pantothenticus, respectively. Protease production increased by 202% and 22% and growth by 19,275% and 940% for DGII and V. pantothenticus, respectively, in the presence of a hydrophobic as compared to a hydrophilic surface. This investigation pioneers the application of a vessel beyond the traditional shake-flask for enhancing protease production by biofilm-formers.
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Affiliation(s)
- Sreyashi Sarkar
- School of Environmental Studies, Department of Chemical Engineering, Jadavpur University, Kolkata 700 032, India
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Yamaga F, Washio K, Morikawa M. Sustainable biodegradation of phenol by Acinetobacter calcoaceticus P23 isolated from the rhizosphere of duckweed Lemna aoukikusa. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:6470-4. [PMID: 20704249 DOI: 10.1021/es1007017] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Phenol-degrading bacteria were isolated from the rhizosphere of duckweed (Lemna aoukikusa) using an enrichment culture method. One of the isolates, P23, exhibited an excellent ability to degrade phenol and attach to a solid surface under laboratory conditions. Phylogenetic analysis revealed that P23 belongs to the genera Acinetobacter and has the highest similarity to Acinetobacter calcoaceticus. P23 rapidly colonized on the surface of sterilized duckweed roots and formed biofilms, indicating that the conditions provided by the root system of duckweed are favorable to P23. A long-term performance test (160 h) showed that continuous removal of phenol can be attributed to the beneficial symbiotic interaction between duckweed and P23. P23 is the first growth-promoting bacterium identified from Lemna aoukikusa. The results in this study suggest the potential usefulness of dominating a particular bacterium in the rhizosphere of duckweeds to achieve efficient and sustainable bioremediation of polluted water.
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Affiliation(s)
- Fumiko Yamaga
- Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University, Kita-10, Nishi-5, Kita-ku, Sapporo 060-0810, Japan
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