Abstract:
:A stable shuttle vector which replicates in Escherichia coli and Clostridium perfringens was constructed by ligating a 3.6-kilobase (kb) fragment of plasmid pBR322 with C. perfringens plasmid pHB101 (3.1 kb). The marker for this shuttle plasmid originated from the 1.3-kb chloramphenicol resistance gene of plasmid pHR106. The resulting shuttle vector, designated pAK201, is 8 kb in size and codes for resistance to 20 micrograms of chloramphenicol per ml in both E. coli and C. perfringens. Following shuttle vector construction in E. coli, plasmid pAK201 was transformed into E. coli HB101 and C. perfringens ATCC 3624A, using intact cell electroporation. The transformation frequencies were 10(6) and 10(4) transformants per microgram of DNA in E. coli and C. perfringens, respectively. Restriction enzyme analysis of the chimera isolated from transformants of both microorganisms suggested that the plasmids were identical. Reciprocal transformation experiments in E. coli and C. perfringens indicated no difference in transformation frequency. Plasmid pAK201 was stable in C. perfringens following repeated transfer in the absence of chloramphenicol pressure. The restriction map of plasmid pAK201 shows six unique cut sites which should be useful for future genetic analysis and C. perfringens gene library construction.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Kim AY,Blaschek HPdoi
10.1128/AEM.55.2.360-365.1989subject
Has Abstractpub_date
1989-02-01 00:00:00pages
360-5issue
2eissn
0099-2240issn
1098-5336journal_volume
55pub_type
杂志文章abstract::The genome of Dehalococcoides ethenogenes strain 195, an anaerobic dehalorespiring bacterium, contains 18 copies of putative reductive dehalogenase genes, including the well-characterized tceA gene, whose gene product functions as the key enzyme in the environmentally important dehalorespiration process. The genome of...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.6.2955-2961.2005
更新日期:2005-06-01 00:00:00
abstract::The unusual compound beta-aminoglutaric acid (beta-glutamate) has been identified by 13C nuclear magnetic resonance spectroscopy in soluble extracts of marine methanogenic bacteria. We examined several methanogen species representing nine genera and found that beta-glutamate occurred in methanococci and two methanogen...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.5.1504-1508.1990
更新日期:1990-05-01 00:00:00
abstract::Shewanella oneidensis couples oxidation of lactate to respiration of many substrates. Here we report that llpR (L-lactate-positive regulator, SO_3460) encodes a positive regulator of L-lactate utilization distinct from previously studied regulators. We also demonstrate D-lactate inhibition of L-lactate utilization in ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02183-12
更新日期:2012-12-01 00:00:00
abstract::Diet is a major factor in maintaining a healthy human gastrointestinal tract, and this has triggered the development of functional foods containing a probiotic and/or prebiotic component intended to improve the host's health via modulation of the intestinal microbiota. In this study, a long-term placebo-controlled cro...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00233-06
更新日期:2006-09-01 00:00:00
abstract::[This corrects the article on p. 2610 in vol. 57.]. ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.58.2.780-780.1992
更新日期:1992-02-01 00:00:00
abstract::Formation of the lateral flagella by Vibrio parahaemolyticus was inhibited under an alkaline condition of the medium. However, flagellation of the polar monotrichous flagellum was not affected in the same condition. Flagellation of the lateral flagella depended on the pH of the medium. ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.37.6.1248-1249.1979
更新日期:1979-06-01 00:00:00
abstract::The growth of and production of protease, alpha-amylase, alpha-galactosidase, and lipase by Actinomucor taiwanensis in relation to temperature and relative humidity during the preparation of sufu (Chinese cheese) pehtze were investigated. The incubation temperature, humidity, and cultivation time greatly affected the ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.54.3.688-692.1988
更新日期:1988-03-01 00:00:00
abstract::Wild-type Bacillus subtilis ferments 20 g/liter glucose in 48 h, producing lactate and butanediol, but not ethanol or acetate. To construct an ethanologenic B. subtilis strain, homologous recombination was used to disrupt the native lactate dehydrogenase (LDH) gene (ldh) by chromosomal insertion of the Zymomonas mobil...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00625-07
更新日期:2007-08-01 00:00:00
abstract::The effects of different organic substrates on the abilities of anaerobic sediment enrichments to reductively dechlorinate polychlorinated biphenyls (PCBs) were studied. Sediments collected from a site previously contaminated with PCBs were dosed with additional PCBs (Aroclor 1242; approximately 300 ppm [300 mug/g], s...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.9.2612-2617.1990
更新日期:1990-09-01 00:00:00
abstract::Cadmium is an important heavy metal pollutant. For this study, we investigated the effects of cadmium exposure on the oxidative stress responses of Xanthomonas campestris, a soil and plant pathogenic bacterium. The exposure of X. campestris to low concentrations of cadmium induces cross-protection against subsequent k...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.4.1843-1849.2005
更新日期:2005-04-01 00:00:00
abstract::Trichoderma species isolated from water-damaged buildings were screened for toxicity by using boar sperm cells as indicator cells. The crude methanolic cell extract from Trichoderma harzianum strain ES39 inhibited the boar sperm cell motility at a low exposure concentration (50% effective concentration, 1 to 5 microg ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.70.8.4996-5004.2004
更新日期:2004-08-01 00:00:00
abstract::From necrotic tissue of a Nashi pear tree, 24 Erwinia pyrifoliae strains, found to be identical by pulsed-field gel electrophoresis analysis, were isolated. Thirteen strains were not virulent on immature pears and did not induce a hypersensitive response in tobacco leaves. The defective gene hrpL was complemented with...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.1.679-682.2003
更新日期:2003-01-01 00:00:00
abstract::Several cell surface characteristics of bacteriophage-resistant Lactococcus lactis subsp. cremoris SK110 were compared with those of its phage-sensitive derivative SK112. After centrifugation, SK110 cells resisted suspension more strongly than SK112 cells. SK112 was more negatively charged and had a more hydrophobic c...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.10.3230-3233.1990
更新日期:1990-10-01 00:00:00
abstract::Escherichia coli is one of the most widely used host microorganisms for recombinant protein expression and metabolic engineering, but it cannot efficiently secrete recombinant proteins to extracellular space. Here, extracellular protein secretion was enhanced in E. coli by deleting two d,d-carboxypeptidase genes (dacA...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01382-18
更新日期:2018-10-01 00:00:00
abstract::Phragmidium violaceum causes leaf rust on the European blackberry (Rubus fruticosus L. aggregate). Multiple strains of this pathogen have been introduced into southern Australia for the biological control of at least 15 taxa of European blackberry, a nonindigenous, invasive plant. In climates conducive to leaf rust, t...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02885-07
更新日期:2008-09-01 00:00:00
abstract::Alteromonas sp. strain O-7 secretes several proteins in addition to chitinolytic enzymes in response to chitin induction. In this paper, we report that one of these proteins, designated MprIII, is a metalloprotease involved in the chitin degradation system of the strain. The gene encoding MprIII was cloned in Escheric...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.11.5563-5570.2002
更新日期:2002-11-01 00:00:00
abstract::An aseptic vacuum extraction technique was used to obtain xylem fluid from the roots of rough lemon (Citrus jambhiri Lush.) rootstock of Florida citrus trees. Bacteria were consistently isolated from vascular fluid of both healthy and young tree decline-affected trees. Thirteen genera of bacteria were found, the most ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.43.6.1335-1342.1982
更新日期:1982-06-01 00:00:00
abstract::The subunit composition of the extracellular complex from Clostridium thermocellum was analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Twenty-six bands, representing proteins with apparent molecular sizes ranging from 37,500 to 185,000 Da, could be detected by silver staining. Cultiva...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.12.3798-3804.1990
更新日期:1990-12-01 00:00:00
abstract::The oral biofilm community consists of >800 microbial species, among which Streptococcus mutans is considered a primary pathogen for dental caries. The genomic island TnSmu2 of S. mutans comprises >2% of the genome. In this study, we demonstrate that TnSmu2 harbors a gene cluster encoding nonribosomal peptide syntheta...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.03079-09
更新日期:2010-09-01 00:00:00
abstract::Q fever, caused by Coxiella burnetii, is a zoonosis with a worldwide distribution. A large rural area in the southeast of the Netherlands was heavily affected by Q fever between 2007 and 2009. This initiated the development of a robust and internally controlled multiplex quantitative PCR (qPCR) assay for the detection...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.05097-11
更新日期:2011-09-01 00:00:00
abstract::Sequence analysis of the five genes (gutRMCBA) downstream from the previously described sorbitol-6-phosphate dehydrogenase-encoding Lactobacillus casei gutF gene revealed that they constitute a sorbitol (glucitol) utilization operon. The gutRM genes encode putative regulators, while the gutCBA genes encode the EIIC, E...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00230-08
更新日期:2008-09-01 00:00:00
abstract::In a field study of 29 dairy farms, Pseudomonas aeruginosa was isolated more frequently (P = 0.05) from milking parlor udder wash water systems containing iodophor germicides than from those with no germicide. Most available iodine (AI2) concentrations were below the recommended level of 25 ppm (25 microgram/ml). Rubb...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.2.568-572.1991
更新日期:1991-02-01 00:00:00
abstract::An enrichment method using d-cycloserine was designed for the isolation of spontaneous mutants of Zymomonas mobilis deficient in glucose or fructose utilization. The mutants could easily be isolated since they represented 80 to 90% of the population after two and three enrichment cycles. Glucokinase and fructokinase a...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.3.1096-1098.1996
更新日期:1996-03-01 00:00:00
abstract::Three species of colonic bacteria can ferment the mucopolysaccharide chondroitin sulfate: Bacteroides ovatus, Bacteroides sp. strain 3452A (an unnamed DNA homology group), and B. thetaiotaomicron. Proteins associated with the utilization of chondroitin sulfate by B. thetaiotaomicron have been characterized previously....
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.51.5.978-984.1986
更新日期:1986-05-01 00:00:00
abstract::The effect of condensed tannins from birdsfoot trefoil (Lotus corniculatus L.) on the cellulolytic rumen bacterium Fibrobacter succinogenes S85 was examined. Condensed tannins inhibited endoglucanase activity in the extracellular culture fluid, at concentrations as low as 25 mug ml. In contrast, cell-associated endogl...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.59.7.2132-2138.1993
更新日期:1993-07-01 00:00:00
abstract::The sensitivity of two recently isolated antigenic variants of echovirus type 25 (Montpellier 76-1262 and Thionville 86-222) to glutaraldehyde (GTA) at low concentrations was compared with that of the JV-4 prototype strain. The purified viruses were treated under the same conditions with GTA at concentrations ranging ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.2.387-392.1994
更新日期:1994-02-01 00:00:00
abstract::Presently, the only effective treatment for celiac disease is a life-long gluten-free diet. In this work, we used a new mixture of selected sourdough lactobacilli and fungal proteases to eliminate the toxicity of wheat flour during long-time fermentation. Immunological (R5 antibody-based sandwich and competitive enzym...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00260-07
更新日期:2007-07-01 00:00:00
abstract::"Viili," a fermented milk product, has a firm but viscous consistency. It is produced with traditional mesophilic mixed-strain starters, which have various stabilities in dairy practice. Thirteen morphologically different types of phages were found in 90 viili samples studied by electron microscopy. Ten of the phage t...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.52.4.771-777.1986
更新日期:1986-10-01 00:00:00
abstract::Batch cultures of a lithotrophic Fe(II)-oxidizing bacterium, strain BrT, isolated from the rhizosphere of a wetland plant, were grown in bioreactors and used to determine the significance of microbial Fe(II) oxidation at circumneutral pH and to identify abiotic variables that affect the partitioning between microbial ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.8.3988-3995.2002
更新日期:2002-08-01 00:00:00
abstract::With a medium containing citrate as the carbon and energy source, 10 clostridial strains were isolated from various mud samples. Characterization of these strains revealed that they all belonged to the same species, Clostridium sphenoides. Strains of this organism obtained from culture collections were also able to gr...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.33.4.955-962.1977
更新日期:1977-04-01 00:00:00