Article
Cell Biology
Jonathan B. Lynch, Brittany D. Bennett, Bryan D. Merrill, Edward G. Ruby, Andrew J. Hryckowian
Summary: In this study, the phage HNL01 that infects marine bacterium Vibrio fischeri was described. Mutations in the exopolysaccharide locus of V. fischeri were found to render this bacterium resistant to HNL01 infection. Additionally, it was shown that V. fischeri is protected from phages present in the ambient seawater during colonization.
Article
Microbiology
Ruth Y. Isenberg, David G. Christensen, Karen L. Visick, Mark J. Mandel
Summary: There is significant interest in studying the role of cyclic diguanylate (c-di-GMP) in bacteria, specifically its effect on biofilm formation and motility. However, less attention has been given to understanding its contribution to beneficial colonization. This study examines the role of c-di-GMP in the colonization of Vibrio fischeri bacteria in the Hawaiian bobtail squid. The results show that high levels of c-di-GMP severely impair colonization, while low levels have no effect. The study also highlights the importance of proper c-di-GMP regulation during colonization and identifies an interaction between different biofilm polysaccharides regulated by c-di-GMP in the host.
Article
Environmental Sciences
Georgiana Amariei, Sara Jimenez-Jimenez, Maria Angeles Garcia, Maria Luisa Marina, Karina Boltes
Summary: This study investigated the enantiomer-specific stability and acute toxicity of ivabradine to marine bacterium, Vibrio fischeri, as well as its potential mechanism of action. The results showed that S-ivabradine exhibited enantioselective toxicity to the bacterium, causing serious damage to bacterial cells and disrupting enzymatic activity. The primary mechanism of S-ivabradine toxicity was shown to be oxidative stress. These findings emphasize the importance of further eco-toxicological evaluations of S-ivabradine on other aquatic organisms to determine the environmental risk.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Microbiology
Clotilde Bongrand, Jamie S. Foster
Summary: This study examined the effects of simulated microgravity on the interactions between beneficial bacteria and their hosts. The results indicated that environmental stress, such as simulated microgravity, can alter the initiation of beneficial interactions between microbes and animals. The population levels of certain bacterial strains were lower in animals exposed to simulated microgravity, and there were shifts in the relative abundance of strains in co-colonised animals.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Pat M. Fidopiastis, Chaz Childs, Jeremy J. Esin, Jordan Stellern, Anna Darin, Andrea Lorenzo, Vanessa T. Mariscal, Jason Lorenz, Vinay Gopan, Sarah McAnulty, Karen L. Visick
Summary: Bacteria utilize extracellular DNA as a nutritious resource, and the nuclease activity of V. fischeri plays a crucial role in colonization and mutualistic association with Euprymna scolopes. Understanding the specific role of nuclease activity in this process expands our knowledge of beneficial microbial associations.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Microbiology
Katharina Kesy, Matthias Labrenz, Brittan S. Scales, Bernd Kreikemeyer, Sonja Oberbeckmann
Summary: The study found that potentially pathogenic Vibrio bacteria are early colonizers of microplastics and their colonization is dynamic and influenced by environmental factors. Vibrio abundance and composition on microplastics vary depending on nutrient levels, with higher nutrients possibly facilitating faster establishment of Vibrio populations.
Article
Genetics & Heredity
Rundong Shu, Chaoqun Yuan, Bojun Liu, Yang Song, Leqi Hou, Panpan Ren, Hui Wang, Chunhong Cui
Summary: In bacteria, the Aer receptors and MCPs play different roles in bacterial chemotaxis and physiological processes, including aerotaxis, chemotaxis, biofilm formation, and intestinal colonization.
Review
Microbiology
Kirsten R. Guckes, Tim I. Miyashiro
Summary: This review summarizes the mutualistic symbiosis between the Hawaiian bobtail squid Euprymna scolopes and the marine bacterium Vibrio fischeri, and explores how intercellular interactions impact animal-bacterial associations. The existence of multiple strains of V. fischeri within each squid suggests that different strains initially colonize the squid. Certain strains of V. fischeri possess a type-VI secretion system (T6SS), which can inhibit other strains from establishing symbiosis within the same host habitat.
Article
Immunology
Zhiting Ling, Dan Zhao, Xinyu Xie, Hao Yao, Yuting Wang, Suwei Kong, Xiang Chen, Zhiming Pan, Xin'an Jiao, Yuelan Yin
Summary: This study aimed to investigate the role of inlF in the inflammatory response and pathogenesis of Listeria monocytogenes serotype 4b strains. The results showed that inlF contributed to macrophage adhesion and invasion, and suppressed the expression of pro-inflammatory cytokines. In in vivo experiments using mice, inlF inhibited inflammation in the spleen and liver, and promoted the colonization and survival of Lm, leading to severe inflammatory injury and histopathologic changes.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Materials Science, Ceramics
Allison S. Brandvold, Waltraud M. Kriven
Summary: This study investigated the influence of temperature on the viscosity of potassium geopolymer pastes. The results showed that temperatures above 30 degrees C resulted in an exponential increase in viscosity due to the intensified geopolymerization reaction. Higher shear rates delayed the increase in viscosity but did not stop it. Yield stress values increased with higher temperatures. The study also found that viable printing times for temperatures of 50 degrees C or above were as little as 50-60 minutes.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Review
Environmental Sciences
Nur Hanisah Amran, Siti Sarah Mohamad Zaid, Mohd Helmy Mokhtar, Latifah Abd Manaf, Shatrah Othman
Summary: Microplastics have emerged as a significant environmental pollutant that poses potential harm to various organisms. This study aims to gather evidence on the effects of microplastic exposure during early development on vital body systems and provide essential information about possible diseases in adulthood.
Article
Business
Bo Zhu, Chao Liang, Nawazish Mirza, Muhammad Umar
Summary: In the blue economy, start-ups are important for driving sustainable growth and development through innovation and new business models. However, these start-ups face financing constraints. This research examines the factors that influence their gearing ratio and finds that debt ratio is negatively linked to climatic and ocean disruptions, while asset tangibility and regulations have a positive and negative influence, respectively. The presence of private equity reduces the variation in capital mix, and fundamentals motivate the use of debt financing.
JOURNAL OF BUSINESS RESEARCH
(2023)
Article
Microbiology
Kacper M. Sendra, Andrew K. Watson, Ekaterina Kozhevnikova, Anthony L. Moore, T. Martin Embley, Robert P. Hirt
Summary: This article investigates the role of highly reduced forms of mitochondria called mitosomes in parasites, revealing their importance in the progression of the parasite life cycle and the biosynthesis of essential proteins. Additionally, the authors demonstrate that T. hominis is a useful model for studying microsporidian parasites and testing therapeutic agents.
Article
Agriculture, Dairy & Animal Science
Fuxuan Wang, Shihao Li, Fuhua Li
Summary: The lymphoid organ is a vital part of the shrimp immune system, exhibiting different functions in response to different pathogens, providing new insights into the immune functions of the lymphoid organ in shrimp.
Article
Chemistry, Analytical
Susana Fuentes-Velez, Sharmila Fagoonee, Alessandro Sanginario, Marco Pizzi, Fiorella Altruda, Danilo Demarchi
Summary: Liver fibrosis is a crucial factor in the development of hepatocellular carcinoma. This study presents a minimally destructive and label-free method for characterizing liver biopsies ex vivo. The changes in impedance during the progression of fibrosis were observed and approximated to an equivalent RC circuit model. The method was validated using 3D hepatic cell culture. The results suggest that this method has great potential for the study of early-stage fibrotic tissue.
Article
Biotechnology & Applied Microbiology
Joshua J. Cohen, Steven J. Eichinger, Danae A. Witte, Connor J. Cook, Pat M. Fidopiastis, Jovanka Tepavcevic, Karen L. Visick
Summary: This study investigates the importance of competence factors in Vibrio fischeri, revealing potential factors that control its transformation process and deepening the understanding of competence mechanisms. By advancing the genetic manipulation of V. fischeri, this research contributes to the further exploration of genes involved in relevant physiological processes.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Pat M. Fidopiastis, Chaz Childs, Jeremy J. Esin, Jordan Stellern, Anna Darin, Andrea Lorenzo, Vanessa T. Mariscal, Jason Lorenz, Vinay Gopan, Sarah McAnulty, Karen L. Visick
Summary: Bacteria utilize extracellular DNA as a nutritious resource, and the nuclease activity of V. fischeri plays a crucial role in colonization and mutualistic association with Euprymna scolopes. Understanding the specific role of nuclease activity in this process expands our knowledge of beneficial microbial associations.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Pat M. Fidopiastis, Vanessa Mariscal, Jeanne-Marie McPherson, Sarah McAnulty, Anne Dunn, Eric Stabb, Karen L. Visick
Summary: The study reveals the crucial role of V. fischeri AmiB in beneficial colonization of squid, with its mutation affecting cellulosic biofilm production and triggering biological processes related to bacterial colonization and antibiotic susceptibility.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Eric J. Nelson, Hege S. Tunsjo, Pat M. Fidopiastis, Henning Sorum, Edward G. Ruby
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2007)
Article
Biochemistry & Molecular Biology
PM Fidopiastis, CM Miyamoto, MG Jobling, EA Meighen, EG Ruby
MOLECULAR MICROBIOLOGY
(2002)
Article
Marine & Freshwater Biology
PM Fidopiastis, DJ Bezdek, MH Horn, JS Kandel