Part 3 (Archaea - Updates Book)
... b) Crenarcheota – some of these species live at the highest temperatures of any known living things—including in water hot enough to boil! (A variety have recently been discovered growing in soil and water at more moderate temperatures, however). c) Korarcheota are only known from their DNA sequence ...
... b) Crenarcheota – some of these species live at the highest temperatures of any known living things—including in water hot enough to boil! (A variety have recently been discovered growing in soil and water at more moderate temperatures, however). c) Korarcheota are only known from their DNA sequence ...
isolation of a bacteriophage from sewage sludge
... Enteric bacteria are normal inhabitants of the intestines of humans and other animals (Davis, 2005) but are often isolated from aquatic ecosystems after sewage has been introduced into the environment. Sewage contains high numbers of potentially very pathogenic enteric bacteria known as fecal colifo ...
... Enteric bacteria are normal inhabitants of the intestines of humans and other animals (Davis, 2005) but are often isolated from aquatic ecosystems after sewage has been introduced into the environment. Sewage contains high numbers of potentially very pathogenic enteric bacteria known as fecal colifo ...
here
... Soil fumigation is a common practice in agriculture and is recommended to reduce a variety of soil-borne pathogens (Yakabe et al. 2010). By sterilizing soil before crops are planted, weeds, pests, and other harmful organisms are eradicated (Ibekwe et al. 2001). However, beneficial organisms are elim ...
... Soil fumigation is a common practice in agriculture and is recommended to reduce a variety of soil-borne pathogens (Yakabe et al. 2010). By sterilizing soil before crops are planted, weeds, pests, and other harmful organisms are eradicated (Ibekwe et al. 2001). However, beneficial organisms are elim ...
Microbiology Abstracts 1 Judges, please do NOT pre
... Have you ever wondered whether hand sanitizer really does kill 99.99% of bacteria? Almost all hand sanitizer brands claim that their hand sanitizer can kill 99.99% of bacteria. One bacteria called Staphylococcus was difficult to kill until 1928 when Alexander Fleming found that Penicillium, a mold t ...
... Have you ever wondered whether hand sanitizer really does kill 99.99% of bacteria? Almost all hand sanitizer brands claim that their hand sanitizer can kill 99.99% of bacteria. One bacteria called Staphylococcus was difficult to kill until 1928 when Alexander Fleming found that Penicillium, a mold t ...
Extracellular electron transfer from aerobic bacteria to Au loaded
... the EET-induced bacteria current is similar to the LSPRrelated photocurrent, the former takes place without light, and no reactive oxygen species (ROS) are produced during the process. The EET is also different from that commonly attributed to microbial fuel cells (MFC) because it is dominated mainly ...
... the EET-induced bacteria current is similar to the LSPRrelated photocurrent, the former takes place without light, and no reactive oxygen species (ROS) are produced during the process. The EET is also different from that commonly attributed to microbial fuel cells (MFC) because it is dominated mainly ...
Psudomonas putida and fluorecences Prepared by: Ghada Rayyan D
... Pseudomonas agar P.Tech Agar pseudomonas agar F, also as Flo Agar, is used for the enhancement of fluorescin production and Pseudomonas agar P, also known as Tech Agar, is used for the inhancement of pyocyanin production by pseudomonas. ...
... Pseudomonas agar P.Tech Agar pseudomonas agar F, also as Flo Agar, is used for the enhancement of fluorescin production and Pseudomonas agar P, also known as Tech Agar, is used for the inhancement of pyocyanin production by pseudomonas. ...
Enigmatic dual symbiosis in the excretory organ of Nautilus
... and the presence of basal infoldings (mp) in contact with the blood lacuna (BL). Bacteria (arrows) are observed either in contact with the microvilli (mv) of the apical pole or in the pericardial lumen (lu). N, nucleus; OC, ovoid cells. (c) Details of active transporters next to the blood lacunae. T ...
... and the presence of basal infoldings (mp) in contact with the blood lacuna (BL). Bacteria (arrows) are observed either in contact with the microvilli (mv) of the apical pole or in the pericardial lumen (lu). N, nucleus; OC, ovoid cells. (c) Details of active transporters next to the blood lacunae. T ...
Microbial Quality of Unregulated Herbal Medicinal Products in Kenya
... harvesting, drying, storage, handling and preparation of the herbal medicinal product. Other potential pathogenic microorganisms isolated from the samples included: Salmonella spp, Klebsiella pneumoniae, Pseudomomas aeuroginosa, Enterobacter aerogenes, and Staphylococcus aureus. Staphylococcus aurea ...
... harvesting, drying, storage, handling and preparation of the herbal medicinal product. Other potential pathogenic microorganisms isolated from the samples included: Salmonella spp, Klebsiella pneumoniae, Pseudomomas aeuroginosa, Enterobacter aerogenes, and Staphylococcus aureus. Staphylococcus aurea ...
MICROBIOLOGY PRACTICAL GUIDE (A) 2010
... 3) often in the enumeration and isolation of bacteria from a mixed population by diluting the original bacteria suspension and spreading a small inoculum over the surface of the solidified medium and 4) to observe specific biochemical reactions (extracellular enzymes diffusing away from the colony c ...
... 3) often in the enumeration and isolation of bacteria from a mixed population by diluting the original bacteria suspension and spreading a small inoculum over the surface of the solidified medium and 4) to observe specific biochemical reactions (extracellular enzymes diffusing away from the colony c ...
Enterobacter aerogenes
... E. aerogenes is a nosocomial and pathogenic bacterium that causes opportunistic infections including most types of infections. The majority are sensitive to most antibiotics designed for this bacteria class, but this is complicated by their inducible resistance mechanisms, particularly lactamase whi ...
... E. aerogenes is a nosocomial and pathogenic bacterium that causes opportunistic infections including most types of infections. The majority are sensitive to most antibiotics designed for this bacteria class, but this is complicated by their inducible resistance mechanisms, particularly lactamase whi ...
Characterization of Extracellular Protease Lactic Acid Bacteria From
... 1,11 IU/ml crude extracellular protease enzyme activity, 0,27 IU/mg specific enzyme activity and of 11,22 mg/ml protein content. Result of pure extracellular protease enzyme activity is 3,89 IU/ml, 0,34 IU/mg specific enzyme activity and 4,16 mg/ml protein content. Characterization of extracellular ...
... 1,11 IU/ml crude extracellular protease enzyme activity, 0,27 IU/mg specific enzyme activity and of 11,22 mg/ml protein content. Result of pure extracellular protease enzyme activity is 3,89 IU/ml, 0,34 IU/mg specific enzyme activity and 4,16 mg/ml protein content. Characterization of extracellular ...
ANTIBIOTIC RESISTANCE: ORIGINS, EVOLUTION, SELECTION
... volume) and on farms (Levy et al 1976) when antibiotics have been removed. But it takes time. In some instances, anewly gained plasmid is not stably kept in itsnew host. Early on, this instability will help in reversing the resistance. However, with time, the pksmid and bacteria may develop a synerg ...
... volume) and on farms (Levy et al 1976) when antibiotics have been removed. But it takes time. In some instances, anewly gained plasmid is not stably kept in itsnew host. Early on, this instability will help in reversing the resistance. However, with time, the pksmid and bacteria may develop a synerg ...
Ranjit Kumar
... Various important hydrolytic enzymes are retained within the periplasmic space. Thus, the possible dilution of enzymes, which may occur when they are excreted out into the environment, is prevented. In addition LPS gives protection against toxic molecules like fatty ...
... Various important hydrolytic enzymes are retained within the periplasmic space. Thus, the possible dilution of enzymes, which may occur when they are excreted out into the environment, is prevented. In addition LPS gives protection against toxic molecules like fatty ...
The antimicrobial resistance pattern of cultured human
... Objectives Methanogenic archaea are constant members of the human oral and digestive microbiota retrieved, in particular, from periodontitis lesions. The objective of the study was to determine their susceptibility to antimicrobials. Methods Using the macrodilution method in Hungate tubes with optic ...
... Objectives Methanogenic archaea are constant members of the human oral and digestive microbiota retrieved, in particular, from periodontitis lesions. The objective of the study was to determine their susceptibility to antimicrobials. Methods Using the macrodilution method in Hungate tubes with optic ...
File
... diagonal strips of sellotape. Bottles should be stored upright in a container which will prevent them being knocked over. Subculture results Subculturing has been successful when the transferred organisms have grown in the new medium without contamination. ...
... diagonal strips of sellotape. Bottles should be stored upright in a container which will prevent them being knocked over. Subculture results Subculturing has been successful when the transferred organisms have grown in the new medium without contamination. ...
Acanthamoeba polyphaga Intracellular Infection of
... material are dispersed among the bacteria and these bacteria are considered cytoplasmic. At 18 h, 77% of infected macrophages and 32% of infected A. polyphaga amoebae harbor cytoplasmic bacteria. At 24 h, 99 and 78% of infected macrophages and amoebae, respectively, contain cytoplasmic bacteria. On ...
... material are dispersed among the bacteria and these bacteria are considered cytoplasmic. At 18 h, 77% of infected macrophages and 32% of infected A. polyphaga amoebae harbor cytoplasmic bacteria. At 24 h, 99 and 78% of infected macrophages and amoebae, respectively, contain cytoplasmic bacteria. On ...
Fibrolytic Rumen Bacteria: Their Ecology and Functions
... bacteria and fungi. Therefore, the mechanism of plant fiber degradation by F. succinogenes may be very different from that of R. flavefaciens. Several studies on the cellulosome of R. albus have been published. Wood et al. (1982) reported that the cellulase activity of R. albus SY3 is cell-associate ...
... bacteria and fungi. Therefore, the mechanism of plant fiber degradation by F. succinogenes may be very different from that of R. flavefaciens. Several studies on the cellulosome of R. albus have been published. Wood et al. (1982) reported that the cellulase activity of R. albus SY3 is cell-associate ...
SWI protocols
... in logarithmic growth phase. Certain antibiotics in the medium should be removed first as they are supposedly toxic over time, ex)Tetracycline. To do this, spin the culture down and resuspend in same volume of straight LB medium. ...
... in logarithmic growth phase. Certain antibiotics in the medium should be removed first as they are supposedly toxic over time, ex)Tetracycline. To do this, spin the culture down and resuspend in same volume of straight LB medium. ...
Sharp, K. A microscopic investigation of purple sulfur bacterial
... Purple “berries” are aggregates found in tidal pools of Sippewissett Marsh, and they have caught researchers’ attention for at least the past decade. However, there remains much to be understood about what they are, their ecological significance, and how they form. Seitz et al. first characterized p ...
... Purple “berries” are aggregates found in tidal pools of Sippewissett Marsh, and they have caught researchers’ attention for at least the past decade. However, there remains much to be understood about what they are, their ecological significance, and how they form. Seitz et al. first characterized p ...
ISME Journal
... favouring of plant growth-promoting bacteria (Bonkowski and Brandt, 2002; Kreuzer et al., 2006; Mao et al., 2006). Among Gram-negative bacteria, pseudomonads are a particular important group of plant growth-promoting rhizobacteria. Pseudomonads may promote plant growth by enhancing root growth (De L ...
... favouring of plant growth-promoting bacteria (Bonkowski and Brandt, 2002; Kreuzer et al., 2006; Mao et al., 2006). Among Gram-negative bacteria, pseudomonads are a particular important group of plant growth-promoting rhizobacteria. Pseudomonads may promote plant growth by enhancing root growth (De L ...
Mechanistic Classes of Antibacterials
... Overkill (multiple antibiotics) has worked well for HIV/AIDS, but not always applicable for bacteria (side effects). Direct observation therapy - continue antibiotic dose until no bacteria remain (not practical). Use narrow-spectrum antibiotics when applicable. Withhold the most powerful drugs - pre ...
... Overkill (multiple antibiotics) has worked well for HIV/AIDS, but not always applicable for bacteria (side effects). Direct observation therapy - continue antibiotic dose until no bacteria remain (not practical). Use narrow-spectrum antibiotics when applicable. Withhold the most powerful drugs - pre ...
Prokaryotes
... reproducing from a single cell in a matter of hours. 58. Genetic variation can result during this process. 59. Rapid changes in genetic variation of some harmful bacteria have made them resistant to many known antibiotic cures. For example, certain strains of Staphylococcus bacteria that cause inf ...
... reproducing from a single cell in a matter of hours. 58. Genetic variation can result during this process. 59. Rapid changes in genetic variation of some harmful bacteria have made them resistant to many known antibiotic cures. For example, certain strains of Staphylococcus bacteria that cause inf ...
(FT-IR) spectroscopy: A rapid tool for detection and analysis of
... Each bacterial species has a complex cell wall/membrane composition which gives a unique IR fingerprint (Fig. 2), due to the stretching and bending vibrations of molecular bonds or functional groups present in its proteins, nucleic acids, lipids, sugars, and lipopolysaccharides (LPS). The molecular ...
... Each bacterial species has a complex cell wall/membrane composition which gives a unique IR fingerprint (Fig. 2), due to the stretching and bending vibrations of molecular bonds or functional groups present in its proteins, nucleic acids, lipids, sugars, and lipopolysaccharides (LPS). The molecular ...
Chapter 1: Overview - Worcester Polytechnic Institute
... The adhesion of bacteria to uroepithelial cells or urinary catheters is the first step in the development of biofilm formation and urinary tract infections (UTIs). Previous research has suggested that consumption of cranberry juice can prevent the recurrence of UTIs by decreasing bacterial adhesion ...
... The adhesion of bacteria to uroepithelial cells or urinary catheters is the first step in the development of biofilm formation and urinary tract infections (UTIs). Previous research has suggested that consumption of cranberry juice can prevent the recurrence of UTIs by decreasing bacterial adhesion ...
Biofilm
A biofilm is any group of microorganisms in which cells stick to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm extracellular polymeric substance, which is also referred to as slime (although not everything described as slime is a biofilm), is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial and hospital settings. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single-cells that may float or swim in a liquid medium.Microbes form a biofilm in response to many factors, which may include cellular recognition of specific or non-specific attachment sites on a surface, nutritional cues, or in some cases, by exposure of planktonic cells to sub-inhibitory concentrations of antibiotics. When a cell switches to the biofilm mode of growth, it undergoes a phenotypic shift in behavior in which large suites of genes are differentially regulated.