Article
Environmental Sciences
Isabel Silva, Marta Tacao, Isabel Henriques
Summary: This study investigated the role of copper and zinc in the selection of antibiotic resistant bacteria and genes in a riverine bacterial community. Results showed that metal exposure led to the prevalence of bacteria intrinsically resistant to antibiotics, suggesting the importance of cross-resistance mechanisms in antibiotic resistance selection.
Review
Biology
Clive J. C. Phillips, Babak Hosseintabar-Ghasemabad, Ivan F. Gorlov, Marina I. Slozhenkina, Aleksandr A. Mosolov, Alireza Seidavi
Summary: With the prohibition of antibiotics in poultry feed becoming widespread, the use of natural feed additives and alternatives is necessary to stimulate the immune systems of broiler chickens. This review explores the effectiveness of plant-derived additives in improving the avian immune system and broiler health. However, excessive use of additives may reduce immunocompetence, making it important to determine tolerance levels and optimal doses.
Article
Microbiology
Nicholas A. Lesniak, Alyxandria M. Schubert, Kaitlin J. Flynn, Jhansi L. Leslie, Hamide Sinani, Ingrid L. Bergin, Vincent B. Young, Patrick D. Schloss
Summary: Clostridioides difficile colonization can lead to a range of infection severities, from mild diarrhea to life-threatening conditions. While factors such as patient age, blood cell count, and C. difficile characteristics have been associated with disease severity, the role of specific gut bacteria in influencing severity is unclear. This study demonstrates that different gut bacterial communities can contribute to variations in Clostridioides difficile infection outcomes. Certain bacterial groups were associated with more severe outcomes, while others were associated with milder outcomes. Incorporating gut bacterial community data into severity models may aid in identifying at-risk patients and improving interventions.
Article
Agriculture, Dairy & Animal Science
Idoia Goiri, Roberto Ruiz, Raquel Atxaerandio, Jose Luis Lavin, Xabier Diaz de Otalora, Aser Garcia-Rodriguez
Summary: The study evaluated the effects of supplementing broiler diets with biochar on performance, pH of digestive organs, SCFA profile, and bacterial community. Results showed that while biochar initially reduced performance, it ultimately promoted growth and production efficiency without impacting the pH of digestive organs or altering the richness and diversity of cecal microbiota.
ANIMAL FEED SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Han Xu, Zeyou Chen, Xinyan Wu, Lin Zhao, Nan Wang, Daqing Mao, Hongqiang Ren, Yi Luo
Summary: The addition of foreign antibiotic-resistance bacteria increased the diversity and niche breadth of the soil bacterial community, altered its composition and structure. Tetracycline contamination may further enhance these impacts, and the effects of foreign ARB on the soil bacterial community lasted longer than their survival time, potentially challenging the stability of the soil bacterial community.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Microbiology
Jinhe Kang, Shaoxun Tang, Rongzhen Zhong, Zhiliang Tan, Duanqin Wu
Summary: The study found that sucrose supplementation had significant effects on the quality of alfalfa silage and bacterial communities, improving the nutritional value and beneficial bacterial content of the silage.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Ecology
Anna S. Weiss, Anna G. Burrichter, Abilash Chakravarthy Durai Raj, Alexandra von Strempel, Chen Meng, Karin Kleigrewe, Philipp C. Muench, Luis Roessler, Claudia Huber, Wolfgang Eisenreich, Lara M. Jochum, Stephanie Goeing, Kirsten Jung, Chiara Lincetto, Johannes Huebner, Georgios Marinos, Johannes Zimmermann, Christoph Kaleta, Alvaro Sanchez, Baerbel Stecher
Summary: This study focuses on the growth and metabolic interactions of the Oligo-Mouse-Microbiota (OMM12) synthetic bacterial community in gut microbiome research. By conducting experiments, it was found that the OMM12 interaction network is influenced by exploitative and interference competition, with Enterococcus faecalis KB1 identified as an important driver of community composition.
Article
Agriculture, Dairy & Animal Science
Rana Muhammad Bilal, Faiz Ul Hassan, Muhammad Saeed, Majed Rafeeq, Naveed Zahra, Asim Fraz, Salman Saeed, Musarrat Abbass Khan, Hany A. M. Mahgoub, Mayada R. Farag, Mahmoud Alagawany
Summary: Yeast and its products have multiple benefits in broiler diets, including improving immune response, enhancing gut health, and boosting nutrient absorption. They can be used as effective feed additives to replace synthetic antibiotic growth promoters, improving animal welfare and productivity.
ANIMAL BIOTECHNOLOGY
(2023)
Article
Biophysics
Maheshawari J. Behere, Ambika Hemant Shinde, Soumya Haldar
Summary: The present work developed ABCD kits for quick detection of antibiotic-resistant bacterial contamination in environmental bacterial communities. The method was standardized and verified using known antibiotic-resistant strains and different water sources, and it allows for monitoring of resistant bacteria by observing color change within a maximum of 7 hours without the need for a microbiology laboratory or skilled manpower.
BIOSENSORS & BIOELECTRONICS
(2023)
Review
Environmental Sciences
Ana Maria Sanchez-Baena, Luz Dary Caicedo-Bejarano, Monica Chavez-Vivas
Summary: The study describes the bacterial population structure and antibiotic resistance genes in natural and artificial water systems, revealing that the predominant phyla in these water systems are Firmicutes and Bacteroidetes, and commonly reported Gram-negative bacteria with resistance to antibiotics belong to the family Enterobacteraceae. The antibiotic resistance genes mainly reported are those conferring resistance to beta-lactam antibiotics, aminoglycosides, fluoroquinolones, macrolides, and tetracycline, with a high influence of anthropogenic activity in the environment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Popi Karaolia, Costas Michael, Thomas Schwartz, Despo Fatta-Kassinos
Summary: This study investigated the removal of antibiotic resistance genes (ARGs) and changes in bacterial community structure in wastewater treated with a Membrane BioReactor (MBR) followed by solar photo-Fenton oxidation. The results showed that MBR treatment resulted in a significant reduction of bacteria, while solar photo-Fenton oxidation had an impact on the bacterial community structure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Joao A. A. Ascensao, Kelly M. M. Wetmore, Benjamin H. H. Good, Adam P. P. Arkin, Oskar Hallatschek
Summary: Ascensao et al. engineered knockout libraries of a nascent bacterial community and found that ecological and epistatic patterns combine to shape adaptive landscapes, despite idiosyncratic behavior of individual knockouts. The study also revealed that fitness effects are correlated with evolutionary outcomes for certain conditions, indicating shifting patterns of adaptation.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Qi Zhao, Wanqian Guo, Haichao Luo, Huazhe Wang, Taiping Yu, Banghai Liu, Qishi Si, Nanqi Ren
Summary: This study investigated the effects of adding different conductive materials on the spread of antibiotic resistance genes during wastewater treatment. The results showed that the addition of magnetite, activated carbon, and zero valent iron can improve antibiotic removal and reduce the abundance of antibiotic resistance genes. The study also found that these conductive materials may inhibit the spread of antibiotic resistance genes by regulating the physiological features of cells.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Elizaveta Koroleva, Aza Zizipo Mqulwa, Scott Norris-Jones, Sidney Reed, Zahraa Tambe, Aiden Visagie, Karin Jacobs
Summary: The study revealed that biodegradable cigarette butts had a significant impact on the bacterial community composition of soil compared to non-biodegradable butts, likely due to higher concentrations of certain metals and metalloids in their leachate. Cigarette butts primarily contain microplastics, toxic metals, and metalloids, which can leach into the soil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Zhengquan Gu, Keshao Liu, Mikkel Winther Pedersen, Feng Wang, Yuying Chen, Chen Zeng, Yongqin Liu
Summary: The study found that temporal variation in environmental factors promoted the shift in bacterial communities in glacial streams and lakes. The microbial communities in the stream were influenced by ecological drift and selection, while lake bacterioplankton were primarily governed by homogeneous selection.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)