Article
Environmental Sciences
Xiaowei Peng, Hong Su, Renjie Cai, Yejun Han
Summary: Microorganisms in marine sediments show promising potential for treating saline wastes due to their salt tolerance. The microbial communities in marine sediments have been found to exhibit excellent anaerobic digestion capabilities at various salinities, including high levels. The differences in bacterial taxonomic richness, nitrogen and sulfur cycle-related members, animal parasites, and archaeal compositions between marine sediment and wastewater plant inoculums highlight the unique microbial resources present in marine sediments for waste treatment applications.
ENVIRONMENTAL RESEARCH
(2021)
Article
Microbiology
Edoardo Piombo, Micol Guaschino, Dan Funck Jensen, Magnus Karlsson, Mukesh Dubey
Summary: This study investigates the composition and activity of fungal secretomes in mycoparasitic and beneficial fungal-plant interactions. The research reveals the importance of secreted proteins in these interactions and identifies potential proteins involved in plant defense and fungal virulence. The findings contribute to our understanding of Clonostachys spp. adaptation and provide a basis for future biocontrol strategies.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Engineering, Environmental
Yuechao Zhang, Qinqin Hao, Oumei Wang, Xiao-Hua Zhang, Fanghua Liu
Summary: Microbial iron reduction plays a crucial role in marine ecosystems, contributing to element cycling and supporting biological activities. Fermentative iron reduction exhibits a pH-buffering effect and improves glucose consumption, bacterial growth, and metabolite production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Chin Yik Lin, Harold J. Bradbury, Gilad Antler, David J. Burdige, Thomas D. Bennett, Shichun Li, Alexandra V. Turchyn
Summary: Sedimentary microbial communities play a critical role in the global carbon cycle, with the presence of clay minerals stimulating the growth of sulfate-reducing bacteria and influencing the rate of sulfate consumption in marine sediments.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Engineering, Environmental
Qingxian Su, Giovanna Albani, Jonas Sundberg, Henrik Rasmus Andersen, Torkel Gissel Nielsen, Bo Thamdrup, Marlene Mark Jensen
Summary: This study investigated the feasibility and capability of using marine sediments for the bioremediation of produced water from offshore oil platforms. The results showed that the biodegradation efficiency of benzene, toluene, ethylbenzene and xylene compounds varied under different redox conditions, with higher degradation rates observed under oxic conditions.
Article
Environmental Sciences
Pablo Alba-Gonzalez, Xose Anton Alvarez-Salgado, Antonio Cobelo-Garcia, Joeri Kaal, Eva Teira
Summary: The chemical composition of the seawater soluble fraction (WSF) of yellow-legged gulls and harbour seal faeces and their impact on microbial plankton communities from an eutrophic coastal area have been tested. After characterisation of the C:N:P stoichiometry, trace metals content and organic molecular composition of the faeces, significant differences between species have been observed in all parameters. The study found that seagull faeces had higher N content and were more soluble in seawater than seal faeces, leading to a greater impact on phytoplankton populations.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Andreas Libonati Brock, Kristin Kostadinova, Emma Mork-Pedersen, Fides Hensel, Yifeng Zhang, Borja Valverde-Perez, Colin A. Stedmon, Stefan Trapp
Summary: Marine dead zones, caused by hypoxia, have been expanding and threatening coastal marine life. In order to protect the marine environment from the formation of dead zones, sediment microbial fuel cells (SMFCs) were tested for their ability to reduce the release of sulfide from sediments. The study found that both steel electrodes and charcoal-amended electrodes could effectively reduce sulfide concentrations in bottom water, as well as phosphate concentrations and ammonium.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Environmental
Jasper. T. Koning, Ulla. E. Bollmann, K. Bester
Summary: The study showed that tolylfluanid can be rapidly removed by biodegradation in marine environments, while dichlofluanid, tralopyril, and medetomidine remained in the system for longer periods of time. The prolonged stability of these biocides could lead to the potential for accumulation in the environment, including the recalcitrant transformation product N,N-DMS from dichlofluanid and tolylfluanid hydrolysis.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Ting Wang, Xiaoshang Ru, Beini Deng, Chenxi Zhang, Xu Wang, Bo Yang, Libin Zhang
Summary: This study investigated the characteristics of marine sediments under a wind farm in China and found that copper, chromium, and zinc were the major contaminants. The pollution level in the wind farm was relatively light compared to baseline values. The physicochemical features of the sediments explained the changes in microorganisms, and the relative abundance of microorganisms correlated with sediment quality. This comprehensive study fills a knowledge gap and enhances our understanding of assessing sedimentary environments in offshore wind farms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Medicine, Research & Experimental
Italo Rodrigues Garcia, Francisca Adilfa de Oliveira Garcia, Pedro Silvino Pereira, Henrique Douglas Melo Coutinho, Abolghasem Siyadatpanah, Roghayeh Norouzi, Polrat Wilairatana, Maria de Lourdes Pereira, Veeranoot Nissapatorn, Saulo Relison Tintino, Fabiola Fernandes Galvao Rodrigues
Summary: This study conducted a literature review on the composition, expression, substrates, and role of efflux pumps in intrinsic resistance. The findings suggest that genes encoding efflux pumps in chromosomes and genetic elements are responsible for multidrug resistance. Although this topic has been extensively explored in the scientific community, understanding how antibiotics act as substrates to increase the expression of pump-encoding genes remains a challenge for medicine.
Article
Ecology
Guillaume Reboul, David Moreira, Nataliia V. Annenkova, Paola Bertolino, Konstantin E. Vershinin, Purificacion Lopez-Garcia
Summary: Lake Baikal is the deepest and most voluminous freshwater reservoir on Earth, with benthic microbial communities showing high richness and evenness. These communities include typically marine species and are relatively stable across sites, not influenced by depth or latitude. Comparative analyses with other sediment communities confirmed the distinctiveness of Baikal benthos.
Article
Engineering, Marine
Kamala Kannan, Sivaperumal Pitchiah, Jeevankumar Guduri Joseph, Dhanraj Ganapathy, Subramanian Sundarrajan, Seeram Ramakrishna
Summary: In this study, halophilic archaea were isolated from a marine sediment sample. Their extracellular polymeric substances (EPS) were extracted and evaluated for various bioactivities. The EPS produced by Halococcus sp., AMS12 showed the highest amount and exhibited enzymatic, antioxidant, and anticancer activities. These findings suggest the multifunctionality of archaeal EPS for potential industrial, food, and pharmaceutical applications.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Natalia Sanchez-Garcia, Carlos Sanz-Lazaro
Summary: Plastic pollution poses a global environmental threat, even to remote and pristine islands such as Galapagos. This study assessed the levels of beach debris in Galapagos and identified the environmental factors influencing their accumulation. The levels of plastic debris on the beaches were alarmingly high and comparable to those in highly contaminated areas. Macro- and mesoplastics were mainly affected by oceanic currents and human activities, while microplastics were influenced by the slope and sediment grain size. The study highlights the urgent need for international commitment in mitigating plastic pollution and protecting pristine habitats.
ENVIRONMENTAL POLLUTION
(2023)
Review
Microbiology
Brendyn M. St. Louis, Sydney M. Quagliato, Pei-Chung Lee
Summary: Post-translational modifications play a critical role in regulating protein function. Bacterial pathogens have evolved to secrete effectors that manipulate host protein phosphorylation pathways as an infection strategy. Despite the challenges involved in studying phosphorylation networks and kinase-substrate interactions, methods are continuously being developed to identify bacterial effector kinases and their host substrates. Understanding the regulation of host signaling during microbial infection through phosphorylation provides insights for developing interventions to treat infection by blocking the activity of secreted effector kinases.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
A. Avona, M. Capodici, D. Di Trapani, M. G. Giustra, P. Greco Lucchina, L. Lumia, G. Di Bella, S. Rossetti, B. Tonanzi, G. Viviani
Summary: In this study, marine sediments polluted by petroleum compounds were treated using a bioslurry pilot scale reactor. The efficiency of TPH removal was evaluated and the mechanisms involved in the biodegradation process were analyzed. The maximum TPH-removal efficiency reached 86%. The microbiome composition in the sediment was analyzed using 16S RNA gene sequencing, which revealed a shift in the microbial community composition after bioslurry treatment. Gaseous emissions from the system were also assessed to obtain a more accurate evaluation of TPH-removal pathway. Phytotoxicity tests showed an improvement in the treated sample quality compared to the untreated sample.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)