Article
Environmental Sciences
Antonio Melo, Joana Costa, Cristina Quintelas, Eugenio C. Ferreira, Daniela P. Mesquita
Summary: The study compared biomass stress-responses under long-term exposure to ibuprofen and found that IBU significantly reduced the removal efficiencies of COD and NH4+, while the composition of EPS also changed, with higher protein content in TBEPS during phases containing IBU.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Tianran Ye, Ao Yang, Yulai Wang, Na Song, Ping Wang, Huacheng Xu
Summary: This study investigates the response of extracellular polymeric substances (EPS) in Microcystis aeruginosa to microplastics (MPs). The results show that MPs can inhibit the growth of Microcystis, but enhance the secretion of EPS. The organic composition in EPS varies differently in response to MP exposure, leading to changes in the dominant components and potential ecotoxicological risk. These findings contribute to our understanding of the interaction between phytoplankton and MPs in aquatic environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Li Wang, Li Yuan, Zheng-Hao Li, Xin Zhang, Kenneth Mei Yee Leung, Guo-Ping Sheng
Summary: This study investigated the genes associated with antibiotic resistance in extracellular polymeric substances (EPS) of activated sludge in wastewater treatment plants (WWTPs), and found that the absolute abundances of EPS-associated ARGs were higher than cell-free ARGs, with no significant difference along the treatment process. Proteobacteria and Bacteroidetes were identified as the major secretors of EPS-associated ARGs. Moreover, the transformation efficiencies of EPS-associated ARGs were higher, indicating higher environmental risks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
You Ma, Tian -Yu Li, Han Meng, Guo-Xiang Wang, Li-Min Zhang, Guo-Zheng Jia, Jie Ma, Yan Xiao, Wei-Hua Li, Wen-Ming Xie
Summary: This study investigated the adsorption of the antibiotic trimethoprim (TMP) by extracellular polymeric substances (EPS) in anaerobic activated sludge. The results showed that loosely-bound EPS had a positive effect on TMP adsorption, while tightly-bound EPS had a negative effect.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Zhimao Mai, Xin Zeng, Xing Wei, Cuici Sun, Jianwei Niu, Wenwen Yan, Jun Du, Yingting Sun, Hao Cheng
Summary: This study found that mangrove restoration significantly enhances sediment anti-scouribility and promotes EPS content in sediments, with extracellular protein and polysaccharide positively correlated with anti-scouribility. The increased bacterial abundances in sediments after mangrove restoration, especially Kandelia obovata, suggest Proteobacteria and Bacteroides may play important roles in EPS secretion and anti-scouribility promotion. Additionally, the increase in total organic carbon, total nitrogen, and total phosphorus induced by mangrove restoration may contribute to the improvement of sediment anti-scouribility.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Tianyuan Gu, Yongqing Lu, Fang Li, Weimin Zeng, Li Shen, Runlan Yu, Jiaokun Li
Summary: This study found that microbial extracellular polymeric substances (EPS) can alleviate Cd toxicity in rice and revealed its detoxification mechanism. Applying EPS at a concentration of 100 mg/L increased biomass, reduced Cd accumulation and transport, and mitigated oxidative damage in rice plants under Cd stress. EPS also enhanced Cd retention in the shoot cell walls and root vacuoles, and altered the expression of genes involved in cell wall formation, antioxidant defense systems, transcription factors, and hormone metabolism. These findings provide new insights into EPS-mediated mitigation of Cd stress in plants and offer strategies to improve crop yield in Cd-contaminated soils in the future.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Xuan Gao, Kun Yang, Daohui Lin
Summary: The presence of extracellular polymeric substance (EPS) affects the interfacial interaction between titanium dioxide nanoparticles (nTiO(2)) and algae, promoting surface accumulation of nanoparticles on algal cells while limiting their internalization. The different endocytosis pathways for anatase nTiO(2) and rutile nTiO(2) entering algal cells may be attributed to their affinities to mediating receptors. EPS removal activates mediating pathways, facilitating more nanoparticle internalization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Qing-Long Fu, Chun-Jie Zhong, Ting Qing, Zi-Yan Du, Cheng-Cheng-Li, Jun-Jie Fei, Willie J. G. M. Peijnenburg
Summary: The study found that the biological impacts of metallic Ag-NPs and silver sulfide nanparticles (Ag2S-NPs) depend on their form and are highly influenced by microbial EPS. Compared to Ag-NPs, Ag2S-NPs have less impact on plants, while Bacillus subtilis EPS significantly alleviates the phytotoxicity of Ag-NPs.
Article
Engineering, Environmental
Xiaoying Liu, Jie Liu, Dongkun Deng, Renjie Li, Chao Guo, Jinxia Ma, Ming Chen
Summary: The study revealed a positive correlation between EPS content and sludge granulation, with increased protein concentration facilitating microbial aggregation and sludge granulation. Environmental factors affect the properties of EPS, with different types of sludge generating varying levels of EPS and protein concentrations.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Thibaut Le Guet, Marilia Camotti Bastos, Valentin Robin, Isabelle Bourven, Gilles Guibaud
Summary: This study compared nine extraction methods based on physical and chemical treatments for extracting EPS from sediment. It found that physical methods and CER are preferred for extracting EPS, while chemical methods showed contamination and impurity issues.
Article
Geochemistry & Geophysics
Ming Zhang, Caroline L. Peacock, Peng Cai, Ke-Qing Xiao, Chenchen Qu, Yichao Wu, Qiaoyun Huang
Summary: Recent research has shown that microbially-derived compounds, particularly extracellular polymeric substances (EPS), play a significant role in the soil organic matter pool. The interaction between EPS and soil minerals affects the sorption and selective retention of EPS constituents. The study investigates the EPS association pathways with ferrihydrite and their impact on the mobility and fate of microbially-derived organic matter in soil environments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Agricultural Engineering
Pengfei Wan, Ying Liu, Quandi Zhang, Li Jiang, Heping Chen, Wenzhou Lv
Summary: Candida Tropicalis was used to improve the dewaterability of activated sludge (AS) by degrading EPS in AS, resulting in a decrease in protein, polysaccharide, and hydrophilic amino acids in EPS. The yeast degraded macromolecular organics into smaller molecular ones and direct addition of yeast to AS was more effective in EPS degradation. Addition of 0.75 g/L of wet yeast cells and 24 h of aeration enhanced the dewaterability of AS with a reduction in CST and MLSS. After 30 days of operation, lab-scale continuous SBRs reduced CST and MLSS of AS. FTIR spectroscopy showed a decrease in hydrophilic functional groups. This study presents a new approach for in-situ reduction of AS in wastewater treatment plants.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Lihua Yang, Qian Yang, Li Lin, Tiangang Luan, Nora F. Y. Tam
Summary: This study investigates the key factors shaping sediment biofilms in contaminated mangrove sediments. It reveals that the pennate diatom Navicula plays a crucial role in balancing the abundance of other diatoms and producing bound-polysaccharides. High nutrient concentrations and contaminants affect the composition and structure of biofilms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Tao He, Jing-Qiu Hua, Rong-Ping Chen, Lei Yu
Summary: This study explored the adsorption capacity of Klebsiella oxytoca, a dye-degrading and EPS-producing strain, to methylene blue. The results showed that EPS played a significant role in the adsorption of MB dye.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Ziyi Zhou, Wencheng Ma, Feiyu Li, Dan Zhong, Wenxuan Zhang, Luming Liu, Jingna Zhang, Yisong Zhu, Peng Su
Summary: This study evaluated the combined effects of sulfamethoxazole (SMX) and NaClO in a drinking water distribution system (DWDS) and revealed the mechanisms of antibiotic resistance gene (ARG) proliferation. Results showed that TetM gene was abundant in both the liquid phase and the biofilm, and total organic carbon (TOC) and temperature were significantly correlated with ARGs in the water phase. ARG abundance in the biofilm phase was correlated with extracellular polymeric substances (EPS). Microbial community structure influenced the proliferation and spread of ARGs in the water phase. Antibiotic concentration influenced ARGs by affecting mobile genetic elements (MGEs).
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Fisheries
I. S. Fortune, D. M. Paterson
ICES JOURNAL OF MARINE SCIENCE
(2020)
Article
Geography, Physical
Xindi Chen, Changkuan Zhang, David M. Paterson, Ian H. Townend, Chuang Jin, Zeng Zhou, Zheng Gong, Qian Feng
EARTH SURFACE PROCESSES AND LANDFORMS
(2019)
Article
Marine & Freshwater Biology
Stephen C. L. Watson, Nicola J. Beaumont, Stephen Widdicombe, David M. Paterson
ESTUARINE COASTAL AND SHELF SCIENCE
(2020)
Article
Microbiology
Laura Duran Suja, Xindi Chen, Stephen Summers, David M. Paterson, Tony Gutierrez
FRONTIERS IN MICROBIOLOGY
(2019)
Article
Environmental Sciences
Adam J. Wyness, David M. Paterson, James E. Rimmer, Emma C. Defew, Marc Stutter, Lisa M. Avery
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2019)
Article
Geology
Melissa J. Craig, Jaco H. Baas, Kathryn J. Amos, Lorna J. Strachan, Andrew J. Manning, David M. Paterson, Julie A. Hope, Scott D. Nodder, Megan L. Baker
Review
Plant Sciences
Julie A. Hope, David M. Paterson, Simon F. Thrush
JOURNAL OF ECOLOGY
(2020)
Article
Limnology
J. A. Hope, J. Malarkey, J. H. Baas, J. Peakall, D. R. Parsons, A. J. Manning, S. J. Bass, I. D. Lichtman, P. D. Thorne, L. Ye, D. M. Paterson
LIMNOLOGY AND OCEANOGRAPHY
(2020)
Article
Geosciences, Multidisciplinary
Xindi Chen, Changkuan Zhang, Ian H. Townend, David M. Paterson, Zheng Gong, Qin Jiang, Qian Feng, Xiping Yu
Summary: Cohesive extracellular polymeric substances (EPS) produced by microorganisms on Earth act as bed stabilizers in sedimentary systems, but under wave action they can lead to destabilization, increased sediment mobility, liquefaction, and mechanical oscillation. Understanding the role of EPS in seabed mobility is crucial for managing the vulnerability of coastal wetlands to waves.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Adam J. Wyness, Irene Fortune, Andrew J. Blight, Patricia Browne, Morgan Hartley, Matthew Holden, David M. Paterson
Summary: The investigation revealed the evolutionary implications of the ecosystem engineering process in intertidal systems. Results showed that microbial community composition and function were influenced by factors such as bioturbation, bioirrigation, and sediment stabilization, with changes in bacterial communities being primarily driven by biogeochemical gradients.
Article
Geosciences, Multidisciplinary
Jaco H. Baas, Jonathan Malarkey, Ian D. Lichtman, Laurent O. Amoudry, Peter D. Thorne, Julie A. Hope, Jeffrey Peakall, David M. Paterson, Sarah J. Bass, Richard D. Cooke, Andrew J. Manning, Daniel R. Parsons, Leiping Ye
Summary: Investigating bedform dynamics in the intertidal zone reveals the relationship between different types of bedforms and the flowing fluid, resulting in a phase diagram that integrates wave-dominated, current-dominated, and combined wave-current bedforms. These field data provide a means of predicting the dimensions of bedforms and may have implications for other areas and grain sizes.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Ecology
James E. Herbert-Read, Ann Thornton, Diva J. Amon, Silvana N. R. Birchenough, Isabelle M. Cote, Maria P. Dias, Brendan J. Godley, Sally A. Keith, Emma McKinley, Lloyd S. Peck, Ricardo Calado, Omar Defeo, Steven Degraer, Emma L. Johnston, Hermanni Kaartokallio, Peter I. Macreadie, Anna Metaxas, Agnes W. N. Muthumbi, David O. Obura, David M. Paterson, Alberto R. Piola, Anthony J. Richardson, Irene R. Schloss, Paul V. R. Snelgrove, Bryce D. Stewart, Paul M. Thompson, Gordon J. Watson, Thomas A. Worthington, Moriaki Yasuhara, William J. Sutherland
Summary: In the Marine and Coastal Horizon Scan, scientists, policymakers, and practitioners collated a list of 15 priority emerging issues likely to affect marine and coastal biodiversity over the next 5-10 years through an iterative voting process. These issues are grouped into three categories: ecosystem impacts, resource exploitation, and new technologies.
NATURE ECOLOGY & EVOLUTION
(2022)
Article
Environmental Sciences
James E. V. Rimmer, Cedric Hubas, Adam J. Wyness, Bruno Jesus, Morgan Hartley, Andrew J. Blight, Antoine Prins, David M. Paterson
Summary: This study found that the order of exposure was less important than the total stressor scenario in terms of impacts on key functional attributes and diatom community structure in estuarine biofilms at environmentally realistic chemical concentrations.
MARINE POLLUTION BULLETIN
(2022)
Article
Multidisciplinary Sciences
Martin Solan, Tom Spencer, David M. Paterson, Christopher A. Unsworth, Elizabeth K. Christie, Andrew J. Blight, Jenny Brown, Helen Brooks, I. Dougal Lichtman, Xiaoyan Wei, Xiaorong Li, Pete Thorne, Julian Leyland, Jasmin A. Godbold, Charlie Thompson, Megan E. Williams, Andrew Plater, Iris Moller, Laurent O. Amoudry
Summary: This article emphasizes the urgent need to address coastal dynamics, particularly in predicting future biological-physical linkages. It suggests the pursuit of more integrated modeling, support for observational networks, and the use of management interventions as controlled experiments.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Article
Biodiversity Conservation
Laurence Jones, Marco Boeri, Mike Christie, Isabelle Durance, Karl L. Evans, David Fletcher, Laura Harrison, Anna Jorgensen, Dario Masante, James McGinlay, David M. Paterson, Reto Schmucki, Chris Short, Natalie Small, Georgina Southon, Timothy Stojanovic, Ruth Waters
Summary: Cultural ecosystem services pose a challenge in decision making due to difficulties in defining and describing them. The study introduces a framework involving cultural capital, social capital, and human capital to understand CES, which was found to be applicable in specific situations. Further research is needed to develop metrics to measure additional factors influencing peoples' motivations to engage with nature.