SUMMARY The Gram-negative, fastidious bacterium Xylella fastidiosa was successfully transformed with two RSF1010 derivative plasmids belonging to the incompatibility group IncQ, using electroporation. These two derivative plasmids, pXF004 and pXF005, were found to be present as autonomous, structurally unchanged DNA molecules when propagated in X. fastidiosa. However, neither pXF004 nor pXF005 were stably maintained in X. fastidiosa without antibiotic selection. When plasmid DNAs were isolated from X. fastidiosa, or plasmid DNAs isolated from E. coli were supplemented with a TypeOne inhibitor, TRI, the frequency of transformation was increased by 13- or 5-fold, respectively. Plasmid pXF005 was also used to transform one additional grapevine strain of X. fastidiosa.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1046/j.1364-3703.2003.00175.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
While engineering modular polyketide synthases (PKSs) using the recently updated module boundary has yielded libraries of triketide-pentaketides, this strategy has not yet been applied to the combinatorial biosynthesis of macrolactones or macrolide antibiotics. We developed a 2-plasmid system for the construction and expression of PKSs and employed it to obtain a refactored pikromycin synthase in that produces 85 mg of narbonolide per liter of culture. The replacement, insertion, deletion, and mutagenesis of modules enabled access to hexaketide, heptaketide, and octaketide derivatives.
View Article and Find Full Text PDFAlginate-polylysine-alginate (APA) microencapsulated transgenic human amniotic epithelial cells ameliorate fibrosis in hypertrophic scars.
Inflamm Res
January 2025
Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.127 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China.
Background: Hypertrophic scar (HS) is a severe skin fibrosis. Transplanting stem cells carrying anti-fibrotic cytokine genes, like interferon-gamma (IFN-γ), is a novel therapeutic strategy. Human amniotic epithelial cells (hAECs) are ideal seed cells and gene vectors.
View Article and Find Full Text PDFSequencing Analysis of Invasive Carbapenem-Resistant Isolates Secondary to Gastrointestinal Colonization.
Microorganisms
January 2025
Microbiology Section, Department of Biomedical and Biotechnological Science, University of Catania, Via Santa Sofia 97, 95123 Catania, Italy.
represent a common invasive infection etiological agent, whose potential carbapenem-resistance and hypermucoviscosity complicate the patient's management. Infection development often derives from gastrointestinal colonization; thus, it is fundamental to monitor asymptomatic colonization through surveillance protocols, especially for intensive care and immunocompromised patients. We described a six-month routine screening protocol from the Policlinico of Catania (Italy), while blood samples were collected from the same patients only in cases of a systemic infection suspicion.
View Article and Find Full Text PDFMapping Antimicrobial Resistance in Isolates from Subclinical Mastitis in Danish Dairy Cows.
Antibiotics (Basel)
January 2025
SEGES Innovation P/S, Agro Food Park, 8200 Aarhus, Denmark.
Although is a key cause of subclinical mastitis in Danish dairy cows, its sensitivity to antimicrobials remains unexplored. Here, we analyzed sixty isolates derived from 42 dairy cows across six conventional dairy herds in Denmark. Phenotypic resistance was measured by antimicrobial susceptibility testing and minimum inhibitory concentration (MIC) analysis, and genotypic resistance was examined through whole-genome sequencing and identification of antimicrobial resistance genes (ARGs).
View Article and Find Full Text PDFGenomic and mutational analysis of Pseudomonas syringae pv. tagetis EB037 pathogenicity on sunflower.
BMC Microbiol
January 2025
USDA-ARS, Sustainable Agricultural Systems Laboratory, Beltsville Agricultural Research Center, Beltsville, MD, 20705, USA.
Background: Pseudomonas syringae pv. tagetis (Pstag) causes apical chlorosis on sunflower and various other plants of the Asteraceae family. Whole genome sequencing of Pstag strain EB037 and transposon-mutant derivatives, no longer capable of causing apical chlorosis, was conducted to improve understanding of the molecular basis of disease caused by this pathogen.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!