Abstract wide variety of environments is due in part to its... genetic versatility, which contributes significantly ...
... Saleh, (2012)found that (66%) of P. aeruginosa isolates produce alginate biofilm. Bacteria in natural habitats usually grow as biofilms, organized communities of cells embedded in an extracellular polysaccharide matrix and attached to a ...
... Saleh, (2012)found that (66%) of P. aeruginosa isolates produce alginate biofilm. Bacteria in natural habitats usually grow as biofilms, organized communities of cells embedded in an extracellular polysaccharide matrix and attached to a ...
Chemosynthetic endosymbioses: adaptations to
... sequences are from chemoautotrophic symbionts). This schematic is based on trees generated using a maximum parsimony algorithm on full 16S rRNA sequences. The association of these bacteria with at least six metazoan phyla suggests that chemosynthetic symbioses have evolved more than once. Episymbion ...
... sequences are from chemoautotrophic symbionts). This schematic is based on trees generated using a maximum parsimony algorithm on full 16S rRNA sequences. The association of these bacteria with at least six metazoan phyla suggests that chemosynthetic symbioses have evolved more than once. Episymbion ...
Bacteria - Sebring Local Schools
... cells are classified as prokaryotic because they do not contain a membrane-bound nucleus or other membrane-bound internal structures called organelles. Most of the genetic material of a bacterial cell is in its one circular chromosome found in the cytoplasm. Many bacteria also have a smaller circula ...
... cells are classified as prokaryotic because they do not contain a membrane-bound nucleus or other membrane-bound internal structures called organelles. Most of the genetic material of a bacterial cell is in its one circular chromosome found in the cytoplasm. Many bacteria also have a smaller circula ...
B: Chapter 1: Bacteria
... cells are classified as prokaryotic because they do not contain a membrane-bound nucleus or other membrane-bound internal structures called organelles. Most of the genetic material of a bacterial cell is in its one circular chromosome found in the cytoplasm. Many bacteria also have a smaller circula ...
... cells are classified as prokaryotic because they do not contain a membrane-bound nucleus or other membrane-bound internal structures called organelles. Most of the genetic material of a bacterial cell is in its one circular chromosome found in the cytoplasm. Many bacteria also have a smaller circula ...
BIO 225 Lab Manual - Bluegrass Community and Technical College
... In order to study the characteristics of a microorganism, it is first necessary to separate it from other microorganisms present in the mixture; we must isolate the suspected organism in pure culture. A pure culture is one in which all of the cells present in the culture originated from a single cel ...
... In order to study the characteristics of a microorganism, it is first necessary to separate it from other microorganisms present in the mixture; we must isolate the suspected organism in pure culture. A pure culture is one in which all of the cells present in the culture originated from a single cel ...
Bacterial antimicrobial metal ion resistance
... Guatemala and Iraq (briefly summarized in Hobman & Silver, 2007), and mortality and reproductive failure of seed-eating birds has also been linked to organomercurial seed dressings. Use of organomercurial seed dressings was discontinued because of these problems. Inorganic mercury compounds have bee ...
... Guatemala and Iraq (briefly summarized in Hobman & Silver, 2007), and mortality and reproductive failure of seed-eating birds has also been linked to organomercurial seed dressings. Use of organomercurial seed dressings was discontinued because of these problems. Inorganic mercury compounds have bee ...
haemagglutinins, serum resistance and
... respect to their clinical signi®cance. Whereas Klebsiella and Enterobacter spp. belong to the 10 most frequently found bacterial pathogens that cause nosocomial infections, Serratia spp. are much less common in human clinical specimens [27]. H. alvei, on the other hand, has been reported in rare cas ...
... respect to their clinical signi®cance. Whereas Klebsiella and Enterobacter spp. belong to the 10 most frequently found bacterial pathogens that cause nosocomial infections, Serratia spp. are much less common in human clinical specimens [27]. H. alvei, on the other hand, has been reported in rare cas ...
Characterization of the spontaneous SOS response in
... (d’Herelle, 1931). Nowadays, phage therapy has come into focus again as humanity faces an evolving challenge in the form of antibiotic resistance (Brüssow, 2012). It is by understanding the nature of the phage's contribution to bacterial traits that phage therapy will bec ...
... (d’Herelle, 1931). Nowadays, phage therapy has come into focus again as humanity faces an evolving challenge in the form of antibiotic resistance (Brüssow, 2012). It is by understanding the nature of the phage's contribution to bacterial traits that phage therapy will bec ...
Phage–bacteria infection networks
... a consensus on patterns and associated mechanisms. Recently, 38 published PBINs spanning 20 years of research and nearly 12 000 individual phage–bacterial strain infection trials were aggregated and re-analyzed [12]. The majority of ecological studies assembled in this re-analysis included phages an ...
... a consensus on patterns and associated mechanisms. Recently, 38 published PBINs spanning 20 years of research and nearly 12 000 individual phage–bacterial strain infection trials were aggregated and re-analyzed [12]. The majority of ecological studies assembled in this re-analysis included phages an ...
Full-Text PDF
... as the sole source of sulfur [12], strongly suggesting that cysJIH also contribute to CIP resistance by diminishing ROS. To determine the role of cysJIH in the CIP resistance, we measured oxidative stress markers in S. Typhimurium WT, S. Typhimurium cysJIH, and S. Typhimurium WT/pBADcysJIH in the p ...
... as the sole source of sulfur [12], strongly suggesting that cysJIH also contribute to CIP resistance by diminishing ROS. To determine the role of cysJIH in the CIP resistance, we measured oxidative stress markers in S. Typhimurium WT, S. Typhimurium cysJIH, and S. Typhimurium WT/pBADcysJIH in the p ...
View/Open
... genus responsible for most human infections. They are opportunistic pathogens found in the environment and in mammalian mucosal surfaces. The principal pathogenic reservoirs of infection are the gastrointestinal tract of patients and the hands of hospital personnel. Organisms can spread rapidly, oft ...
... genus responsible for most human infections. They are opportunistic pathogens found in the environment and in mammalian mucosal surfaces. The principal pathogenic reservoirs of infection are the gastrointestinal tract of patients and the hands of hospital personnel. Organisms can spread rapidly, oft ...
Contribution of the outer surface proteins of Borrelia
... the heterogeneity is found also at the DNA level Comparison of the ospAB sequences allows the classification of the strains into three types, which coincide with the recent species designations, B. burgdorferi sensu stricto, B. afzelii and B. garinii The genes are located on a linear plasmid about 5 ...
... the heterogeneity is found also at the DNA level Comparison of the ospAB sequences allows the classification of the strains into three types, which coincide with the recent species designations, B. burgdorferi sensu stricto, B. afzelii and B. garinii The genes are located on a linear plasmid about 5 ...
Lopes2012 - Edinburgh Research Archive
... resistant strains of A. baumannii. Resistance to carbapenems is well known due to the presence of intrinsic carbapenemase gene blaOXA-51-like, which may be governed by insertion elements, or by acquired carbapenemases like blaOXA-23-like, blaOXA-58-like or blaOXA-40-like genes, most of which are fre ...
... resistant strains of A. baumannii. Resistance to carbapenems is well known due to the presence of intrinsic carbapenemase gene blaOXA-51-like, which may be governed by insertion elements, or by acquired carbapenemases like blaOXA-23-like, blaOXA-58-like or blaOXA-40-like genes, most of which are fre ...
Assignment of ATCC 27377 to Planctomyces staleyi sp. nov. and
... present paper. Under these circumstances, the action currently most appropriate in our view was to name ATCC 27377T as a new species of the genus Planctomyces, on the basis that ATCC 27377T does fit the present definition of the genus Planctomyces (5, 12, 17). When our comprehensive examination of t ...
... present paper. Under these circumstances, the action currently most appropriate in our view was to name ATCC 27377T as a new species of the genus Planctomyces, on the basis that ATCC 27377T does fit the present definition of the genus Planctomyces (5, 12, 17). When our comprehensive examination of t ...
Staphylococcus aureus virulence factors and disease
... S. aureus is the most pathogenic specie of the genus Staphylococcus, being implicated in both community-acquired and nosocomial infections. It often asymptomatically colonizes the skin and mucous membranes of healthy individuals, in particular the anterior nares [8-10]. In effect, it has been estima ...
... S. aureus is the most pathogenic specie of the genus Staphylococcus, being implicated in both community-acquired and nosocomial infections. It often asymptomatically colonizes the skin and mucous membranes of healthy individuals, in particular the anterior nares [8-10]. In effect, it has been estima ...
C. ELEGANS AS A VIRULENCE MODEL FOR E. COLI STRAIN 042
... people and young children are high-risk groups prone to infection. Virulence models using C. elegans might provide valuable information about the host-pathogen interactions which can be used in the treatment of infection with EAEC. It is investigated if the enteroaggregative E. coli 042 is pathogeni ...
... people and young children are high-risk groups prone to infection. Virulence models using C. elegans might provide valuable information about the host-pathogen interactions which can be used in the treatment of infection with EAEC. It is investigated if the enteroaggregative E. coli 042 is pathogeni ...
Antibiotic usage and resistance — trends in Estonian University
... drug combinations are some examples of such practices on which we have no information. Evaluation of these factors in ICUs where patients simultaneously receive several different antibiotics is quite difficult. Our previous study carried out in ICU B in 1995, found that patients received from two to ...
... drug combinations are some examples of such practices on which we have no information. Evaluation of these factors in ICUs where patients simultaneously receive several different antibiotics is quite difficult. Our previous study carried out in ICU B in 1995, found that patients received from two to ...
The prokaryotes
... (e.g., some Clostridium) fix N2 only in the absence of oxygen. In other cases, fixation may require specific nutritional conditions or a differentiation process or both. A remarkable case is the differentiation process of Rhizobium to form N2-fixing bacteroids (Bergersen 1974; Glazebrook et al. 1993 ...
... (e.g., some Clostridium) fix N2 only in the absence of oxygen. In other cases, fixation may require specific nutritional conditions or a differentiation process or both. A remarkable case is the differentiation process of Rhizobium to form N2-fixing bacteroids (Bergersen 1974; Glazebrook et al. 1993 ...
Whole-Cell Bacterial Biosensors and the Detection of - CLU-IN
... However, toxicity, solubility, and mobility can all vary depending upon which species of arsenic is present, thus affecting the bioavailability of the arsenic contamination. The bioavailable fraction is the portion of arsenic that is available for biological uptake. Risk assessments could be over or ...
... However, toxicity, solubility, and mobility can all vary depending upon which species of arsenic is present, thus affecting the bioavailability of the arsenic contamination. The bioavailable fraction is the portion of arsenic that is available for biological uptake. Risk assessments could be over or ...
11126001
... Curing plasmid DNA by elevated temperature (45°C) produced significant changes in Enterobacter aggalomerans cells but had little effect on K. pneumoniae. The results of this study can help direct the mechanistic investigation of multi-drug resistance in respiratory pathogens explore newer avenues. ...
... Curing plasmid DNA by elevated temperature (45°C) produced significant changes in Enterobacter aggalomerans cells but had little effect on K. pneumoniae. The results of this study can help direct the mechanistic investigation of multi-drug resistance in respiratory pathogens explore newer avenues. ...
B: Chapter 1: Bacteria
... cells are classified as prokaryotic because they do not contain a membrane-bound nucleus or other membrane-bound internal structures called organelles. Most of the genetic material of a bacterial cell is in its one circular chromosome found in the cytoplasm. Many bacteria also have a smaller circula ...
... cells are classified as prokaryotic because they do not contain a membrane-bound nucleus or other membrane-bound internal structures called organelles. Most of the genetic material of a bacterial cell is in its one circular chromosome found in the cytoplasm. Many bacteria also have a smaller circula ...
3 C - Microbiology - Noakhali Science and Technology University
... abiogenesis; fermentation process; germ theory of disease; Koch’s postulates; development of laboratory techniques; vaccination; antisepsis; chemotherapy. 2. Scope of Microbiology: in medical, food and dairy, agriculture, industry, health and sanitation, environment and pollution control. 3. Prokary ...
... abiogenesis; fermentation process; germ theory of disease; Koch’s postulates; development of laboratory techniques; vaccination; antisepsis; chemotherapy. 2. Scope of Microbiology: in medical, food and dairy, agriculture, industry, health and sanitation, environment and pollution control. 3. Prokary ...
Opinion of ANSES on the use of bacteriophages in foods of animal
... Given the wide range of resistance mechanisms described in Listeria (CRISPR-Cas, restriction-modification, abortive multiplication, etc.), bacterial resistance development could occur for this phage. In the dossier, it is indicated that among the 5% of strains considered resistant to the phage, the ...
... Given the wide range of resistance mechanisms described in Listeria (CRISPR-Cas, restriction-modification, abortive multiplication, etc.), bacterial resistance development could occur for this phage. In the dossier, it is indicated that among the 5% of strains considered resistant to the phage, the ...
Syllabus of M.Sc Microbiology of Annamalai University
... lectures/ Tutorials/ Laboratory work and other form of learning in a 18 week schedule. Eligibility for Admission. Candidates for admission to the first year of the five year integrated M.Sc Degree courses shall be required to have passed the final examinations of the plus 2 Higher secondary course a ...
... lectures/ Tutorials/ Laboratory work and other form of learning in a 18 week schedule. Eligibility for Admission. Candidates for admission to the first year of the five year integrated M.Sc Degree courses shall be required to have passed the final examinations of the plus 2 Higher secondary course a ...
The Evolutionary Repertoires of the Eukaryotic
... Molecular Biology and Evolution vol. 21 no. 11 Ó Society for Molecular Biology and Evolution 2004; all rights reserved. ...
... Molecular Biology and Evolution vol. 21 no. 11 Ó Society for Molecular Biology and Evolution 2004; all rights reserved. ...
Horizontal gene transfer
Horizontal gene transfer (HGT) refers to the transfer of genes between organisms in a manner other than traditional reproduction. Also termed lateral gene transfer (LGT), it contrasts with vertical transfer, the transmission of genes from the parental generation to offspring via sexual or asexual reproduction. HGT has been shown to be an important factor in the evolution of many organisms.Horizontal gene transfer is the primary reason for bacterial antibiotic resistance, and plays an important role in the evolution of bacteria that can degrade novel compounds such as human-created pesticides and in the evolution, maintenance, and transmission of virulence. This horizontal gene transfer often involves temperate bacteriophages and plasmids. Genes that are responsible for antibiotic resistance in one species of bacteria can be transferred to another species of bacteria through various mechanisms (e.g., via F-pilus), subsequently arming the antibiotic resistant genes' recipient against antibiotics, which is becoming a medical challenge to deal with.Most thinking in genetics has focused upon vertical transfer, but there is a growing awareness that horizontal gene transfer is a highly significant phenomenon and among single-celled organisms perhaps the dominant form of genetic transfer.Artificial horizontal gene transfer is a form of genetic engineering.