98%
921
2 minutes
20
The structure of a new exopolysaccharide from the virulent strain of Cryphonectria parasitica was elucidated by means of 2D NMR spectroscopy and selective degradations (mild hydrolysis and acetolysis). The polysaccharide is built up of mannose, galactose and rhamnose and has a rather complex non-repetitive structure that can be idealised as follows:
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/s0008-6215(02)00283-5 | DOI Listing |
Methods Cell Biol
September 2025
Área de Microbiología, Departamento de Biología Funcional, Facultad de Medicina, IUBA, Universidad de Oviedo, Oviedo, Spain. Electronic address:
The present study focuses on the phenotypic characterization of several mutants of Flavobacterium psychrophilum, obtained from a transposon mutant library. This Gram-negative bacterium is the etiological agent of the "cold water disease", pathology that usually affects salmonids, mainly Oncorhynchus mykiss. This microorganism is considered a "fastidious bacterium" due to the difficulty to isolate it.
View Article and Find Full Text PDFInt Microbiol
September 2025
Department of Microbiology, The University of Burdwan, Bardhaman, West Bengal, 713104, India.
Biofilm formation and other virulence phenotypes under quorum sensing regulation play a vital role in the pathogenicity of Aeromonas hydrophila, triggering the emergence of multi-drug resistance (MDR) which increases fish mortality, environmental issues, and economic loss in aquaculture, necessitating the discovery of novel drugs to bypass standard antibiotics. Here, quorum quenching (QQ) may be a sustainable anti-virulent approach. β-Lactamase enzyme obtained from Chromohalobacter sp.
View Article and Find Full Text PDFEnviron Microbiol Rep
October 2025
Reference Center for Lactobacilli (CERELA-CONICET), San Miguel de Tucumán, Argentina.
Limosilactobacillus fermentum CRL2085, isolated from feedlot cattle rations, displayed high efficiency as a probiotic when administered to animals. A comprehensive genomic analysis was performed to elucidate the genetic basis underlying its probiotic potential. Fifteen genomic islands and CRISPR-Cas elements were identified in its genome.
View Article and Find Full Text PDFPLoS Pathog
September 2025
University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America.
Kingella kingae is a Gram-negative bacterium that has emerged as a leading cause of invasive disease in children between 6 months and 4 years of age. K. kingae initiates infection by colonizing the oropharynx, then breaches the oropharyngeal epithelium, enters the bloodstream, and disseminates to distant sites to cause disease, including osteomyelitis, septic arthritis, and endocarditis.
View Article and Find Full Text PDFBMC Microbiol
August 2025
Faculty of Animal Science and Technology, Yunnan Agricultural University, Panlong district, Kunming, 650201, China.
Lactobacillus helveticus is a probiotic bacterium widely used in the food industry. In this study, we evaluate the safety and probiotic properties of L. helveticus strain KM7, isolated from the gut of Apis cerana, through whole-genome sequencing and in vitro experiments.
View Article and Find Full Text PDF