Abstract:
:We use a powerful method to replace wild-type genes on the chromosome of Escherichia coli. Using a unique form of PCR, we generate easily constructible gene fusions bearing single point mutations. Used in conjunction with homologous recombination, this method eliminates cloning procedures previously used for this purpose.
journal_name
J Microbiol Methodsjournal_title
Journal of microbiological methodsauthors
Benson RW,Cafarelli TM,Godoy VGdoi
10.1016/j.mimet.2010.12.020subject
Has Abstractpub_date
2011-03-01 00:00:00pages
479-81issue
3eissn
0167-7012issn
1872-8359pii
S0167-7012(10)00451-3journal_volume
84pub_type
杂志文章abstract::To hydrolyze blood meal (BM) effectively, two mutants were generated using ultra-violet mutagenesis. Single-factor experiments, the Plackett-Burman technique and response surface methodology were used to optimize the fermentation conditions. This study successfully generated a mutant and innovatively provided importan...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2014.03.017
更新日期:2014-06-01 00:00:00
abstract::Nosocomial infections caused by Stenotrophomonas maltophilia resistant to SXT are increasingly reported worldwide. In this study, a novel melting-curve based multiplex real-time PCR assay for the simultaneous detection of the ssrA and sul1, sul2 and sul3 genes was first established. The assays were performed on a Roch...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2018.12.002
更新日期:2019-01-01 00:00:00
abstract::A discontinuous lactate dehydrogenase coupled assay is described for the evaluation of the pyruvate carboxylase activity (Pc, EC 6.4.1.1) in a glutamate overproducing strain of Corynebacterium glutamicum. After an initial permeabilisation period of the cells, the method consisted of the fluorometric determination of t...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/s0167-7012(99)00104-9
更新日期:1999-12-01 00:00:00
abstract::To ensure quality management during the production processes of probiotics and for efficacy testing in vivo, accurate tools are needed for the identification and quantification of probiotic strains. In this study, a strain-specific qPCR assay based on Suppression Subtractive Hybridisation (SSH) for identifying unique ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2016.02.011
更新日期:2016-04-01 00:00:00
abstract::The aim of this study was to increase the sensitivity of Saccharomyces cerevisiae towards trichothecene toxins, in particular to deoxynivalenol (DON), in order to improve the utility of this yeast as a bioassay indicator organism. We report the construction of a strain with inactivated genes (PDR5, PDR10, PDR15) encod...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2007.12.013
更新日期:2008-03-01 00:00:00
abstract::Recently, a unique method for bacterial transformation using nanofibers to inoculate DNA has been developed by Naoto Yoshida and colleagues. We have verified the principle, transforming Escherichia coli, Yersinia enterocolitica and Acinetobacter baumannii, and have established a user-friendly protocol. A buffered susp...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2009.12.002
更新日期:2010-02-01 00:00:00
abstract::Paper-based nucleic acid testing techniques are increasingly in demand. Hence, we have developed a simple and cheap paper fluidic device to detect multiple gene targets in Leptospira. Fluidic channels of the penta-clover device are drawn using a correction pen on Whatman filter paper 1. The fluid blocks the pores of t...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2020.105962
更新日期:2020-07-01 00:00:00
abstract::Staphylococcus aureus is a Gram-positive coccus and one of the major causes of community-acquired and hospital-acquired infections. We established the convenient and reliable experimental system for analyzing the essentiality and function of genes, the plasmid integration (PI) method. This method is based on plasmid i...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2012.05.017
更新日期:2012-09-01 00:00:00
abstract::The present study describes the development of a simple and efficient screening system that allows identification and quantification of nine bacteriocins produced by Lactococcus lactis. Cell-free L. lactis extracts presented a broad spectrum of antibacterial activity, including Gram-negative bacteria, Gram-positive ba...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2016.06.003
更新日期:2016-08-01 00:00:00
abstract::Strains of Bacillus subtilis are plant growth-promoting bacteria (PGPB) of many crops and are used as inoculants. PGPB colonization is an important trait for success of a PGPB on plants. A specific probe, based on the 16 s rRNA of Bacillus subtilis, was designed and evaluated to distinguishing, by fluorescence in situ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2016.05.029
更新日期:2016-09-01 00:00:00
abstract::Quantification of invasive, intracellular bacteria is critical in many areas of cellular microbiology and immunology. We describe a novel and fast approach to determine invasion of bacterial pathogens in adherent cell types such as epithelial cells or fibroblasts based on flow cytometry. Using the CEACAM-mediated upta...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2005.08.013
更新日期:2006-05-01 00:00:00
abstract::In this report, a passive microfluidic chip design was developed for fast and sensitive fluorometric determination of Escherichia coli (E. coli) based on sandwich immunoassay. Initially, magnetic nanoparticles (MNPs) and chitosan modified mercaptopropionic acid capped cadmium telluride (CdTe) quantum dots (QDs) were f...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2019.105680
更新日期:2019-09-01 00:00:00
abstract::A temperature-gradient incubator (TGI) is described, which produces a thermal gradient over 34 aluminium modules (15x30x5 cm) intersected by 2-mm layers of partly insulating graphite foil (SigraFlex Universal). The new, sandwich-designed TGI has 30 rows of six replicate sample wells for incubation of 28-ml test tubes....
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/s0167-7012(01)00361-x
更新日期:2002-03-01 00:00:00
abstract::Two commercially available all-in-one swab rapid detection systems for Listeria spp. (InSite Listeria Test and Path-Chek hygiene Listeria) were tested for performance in cheese production environments and salmon processing facilities. Sampling was conducted both on clean surfaces and during production. A total of 338 ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2012.08.013
更新日期:2012-11-01 00:00:00
abstract::The Baranyi and Roberts model is one of the most frequently used microbial growth models. It has been successfully applied to numerous studies of various microorganisms in different food products. Under dynamic conditions, the model is implicitly formulated as a set of two coupled differential equations which could be...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2015.03.003
更新日期:2015-05-01 00:00:00
abstract::Molecular tools for Gram-positive bacteria such as Mycobacterium are less well-developed than those for Gram-negatives such as Escherichiacoli. This has slowed the molecular-genetic characterisation of Mycobacterium spp, which is unfortunate, since this genus has high medical, environmental and industrial significance...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2011.06.005
更新日期:2011-09-01 00:00:00
abstract::Streptococcus agalactiae is the principal cause of neonatal infections; however, for its study, genetic tools are scarce. We have developed pG+off, an expression vector with a tetracycline inducible promoter that allows a tightly-controllable gene expression in S. agalactiae. Using a reporter gene, we have shown that ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2013.10.020
更新日期:2014-01-01 00:00:00
abstract::The direct counts of bacteria inhabiting coral mucus were performed by flow cytometry testing four fluorescent dyes (SYBR®Green I, HCS, TOPRO®3, SYTO®62) with three different scleractinian species. Results obtained with SYTO62 were the most reliable based on the comparison with standardized epifluorescence counts and ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2016.05.032
更新日期:2016-09-01 00:00:00
abstract::Traditionally, laboratory detection and identification of dermatophytes consists of culture and microscopy which yields results within approximately 2-6 weeks. In 2007 our medical microbiological diagnostic laboratory implemented a molecular method for the detection of dermatophytes. A real-time PCR assay was develope...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2011.01.023
更新日期:2011-04-01 00:00:00
abstract::A rapid sonication method for lysis of Gram-positive bacteria was evaluated for use in combination with quantitative real-time polymerase chain reaction (PCR) analyses for detection. Other criteria used for evaluation of lysis were microscopic cell count, colony forming units (cfu), optical density at 600 nm and total...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/s0167-7012(03)00091-5
更新日期:2003-10-01 00:00:00
abstract::The level of microbial resistance to heavy metals is an important issue for the microbial ecology of heavy metal-contaminated habitats. However, assays based upon growth in nutrient media will overestimate the resistance level due to metal ion interactions with inorganic and organic components. The analysis of Pb-resi...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/s0167-7012(99)00032-9
更新日期:1999-07-01 00:00:00
abstract::The European Union Reference Laboratory (EURL) for Listeria monocytogenes (Lm) collaborates with a network of 35 National Reference Laboratories (NRLs) throughout Europe. Most of these NRLs are in charge of detecting and typing Lm strains from food, environment and animals, which are isolated nationally. The past few ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2014.06.001
更新日期:2014-09-01 00:00:00
abstract::A digital image analysis method previously used to evaluate leaf color changes due to nutritional changes was modified to measure the severity of several foliar fungal diseases. Images captured with a flatbed scanner or digital camera were analyzed with a freely available software package, Scion Image, to measure chan...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2008.03.008
更新日期:2008-08-01 00:00:00
abstract::Laser desorption-time of flight (LD-TOF) mass spectrometry-based detection of hemozoin was assessed for its performance characteristics as a rapid screening test for malaria. In spite of good specificity of >95%, poor sensitivity of 80.2% for microscopically positive samples makes the easy-to-apply and rapid approach ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2019.04.002
更新日期:2019-05-01 00:00:00
abstract::Chemotactic behaviour is an important part of the lifestyle of motile bacteria and enables cells to respond to various environmental stimuli. The Hard Agar Plug (HAP) method is used to study the chemotactic behaviour of bacteria, including the fastidious microaerophile Campylobacter jejuni, an intestinal pathogen of h...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2018.02.008
更新日期:2018-03-01 00:00:00
abstract::Microsatellites, or short tandem repeats (STR's), are popular tools to discriminate between microbial isolates. Here, we report on the robustness of a microsatellite panel for discrimination of Aspergillus fumigatus isolates. Two major PCR artefacts (stutter peaks and minus-A peaks) can complicate correct interpretati...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2007.01.009
更新日期:2007-05-01 00:00:00
abstract::Multiplex PCR and DNA microarray were combined with tyramide signal amplification (TSA) to develop a reliable method suitable for simultaneous detection of six species of human diarrheal pathogens (Yersinia enterocolitica, Shigella spp, Salmonella typhi, Brucella spp, Vibrio cholera and Escherichia coli O157:H7). Mean...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2008.06.020
更新日期:2008-10-01 00:00:00
abstract::In wastewater, biological phosphate removal can fail because of the presence of glycogen accumulating organism (GAO), therefore measuring glycogen stored in microbial cultures provides information on the bacterial population type. Once glycogen is hydrolysed to glucose it was accurately measured using a human glucose ...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2014.03.002
更新日期:2014-05-01 00:00:00
abstract::We aimed to establish the role of MALDI-TOF MS on species discrimination of phenotypically indistinguishable A. baumannii, A. pittii and A. nosocomialis. Compared to multiplex PCR, the gold standard, MALDI-TOF MS yielded a high sensitivity for A. baumannii (97.9%) and specificity for A. pittii (98.9%) and A. nosocomia...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2017.06.019
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:In a two-stage exchange protocol for prosthetic joint infection (PJI), bacteria surviving over the antibiotic-loaded cement spacers may cause the persistence of infection with renewed clinical symptoms following the surgery. Culture after sonication of removed prosthesis is more sensitive than conventional p...
journal_title:Journal of microbiological methods
pub_type: 杂志文章
doi:10.1016/j.mimet.2018.12.006
更新日期:2019-01-01 00:00:00