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Exploration of endophytic and rhizospheric bacteria of invasive plant Xanthium strumarium L. reveals their potential in plant growth promotion and bacterial wilt suppression.
Braz J Microbiol
January 2025
Department of Botany, Gauhati University, Gopinath Bordoloi Nagar, Jalukbari, Guwahati, 781014, Assam, India.
Plant-associated microbiome plays important role in maintaining overall health of the host plant. Xanthium strumarium displaying resilience to various environmental fluctuations may harbor some bacterial isolates which can help this plant to grow worldwide. The present study aims to isolate endophytic and rhizospheric bacteria from X.
View Article and Find Full Text PDFBiochemical features and biotechnological potential of a proteolytic extract from a psychrophilic Antarctic bacterium.
Braz J Microbiol
January 2025
Laboratorio de Biocatalizadores y sus Aplicaciones, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo, Uruguay.
Proteases are hydrolases that act on peptide bonds, releasing amino acids and/or oligopeptides, and are involved in essential functions in all organisms. They represent an important segment of the global enzyme market, with applications in the food, leather, detergent, and pharmaceutical industries. Depending on their industrial use, proteases should exhibit high activity under extreme conditions, such as low temperatures, e.
View Article and Find Full Text PDFEvaluating the Role of Viable Cells, Heat-Killed Cells or Cell-Free Supernatants in Bacterial Biocontrol of Fungi: A Comparison Between Lactic Acid Bacteria and .
Microorganisms
January 2025
Department of Food Science and Technologies for Sustainable Agro-Food Chain (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, PC, Italy.
This study investigated whether viable cells, dead cells or cell-free supernatants (CFS) were responsible for the biocontrol effect of strains from two important bacterial genera, and , known for their antifungal properties against plant pathogens and food spoilage microorganisms. Specifically, the capability of these strains to produce extracellular hydrolytic enzymes on specified media was assessed, along with their effectiveness in inhibiting the mycelial growth of several phytopathogenic fungi (, , and ) using dual culture plate assays. Results from these inhibition assays revealed that PF05 and LMG 23520 strains were the most effective in suppressing fungal growth, especially .
View Article and Find Full Text PDFPrevention and control strategies for psychrophilic Pseudomonas fluorescens in food: A review.
Food Res Int
February 2025
College of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong 266109, China; Qingdao Special Food Research Institute, Qingdao, Shandong 266109, China; Shandong Technology Innovation Center of Special Food, Shandong 266109, China. Electronic address:
Psychrophilic Pseudomonas fluorescens can secrete extracellular enzymes, biofilms, and other substances even under refrigeration conditions, which have a negative impact on the quality of dairy products, aquatic products, meat products, produce, and other foods, causing food spoilage and huge economic losses. Therefore, strengthening the prevention and control of psychrophilic P. fluorescens in food is of great significance.
View Article and Find Full Text PDFThe GacS/GacA two-component system strongly regulates antimicrobial competition mechanisms of MFE01 strain.
J Bacteriol
January 2025
Laboratoire de Communication Bactérienne et Stratégies Anti-infectieuses (CBSA UR4312, formerly LMSM EA4312), Univ Rouen Normandie, Université Caen Normandie, Normandie Univ, Rouen, France.
Unlabelled: MFE01 is an environmental bacterium characterized by an hyperactive type 6 secretion system (T6SS) and a strong emission of volatile organic compounds (VOCs). In a previous study, a transposition mutant, 3H5, exhibited an inactive T6SS and altered VOC emission. In 3H5, the interruption of gene by the transposon was insufficient to explain these phenotypes.
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