Isolation and Characterization of Halophilic Bacteria
... The biochemical tests showed that most of the isolates showed negative for Indole, Methyl red, Voges Proskauer and catalase, oxidase tests (Table 3). Antόn et al., 2002 demonstrated the novel halophilic bacteria, Salinibacter sp. isolated from solar salterns of Spain. Further, they confirmed the iso ...
... The biochemical tests showed that most of the isolates showed negative for Indole, Methyl red, Voges Proskauer and catalase, oxidase tests (Table 3). Antόn et al., 2002 demonstrated the novel halophilic bacteria, Salinibacter sp. isolated from solar salterns of Spain. Further, they confirmed the iso ...
Botulism
... •Botulism is a serious illness that causes flaccid paralysis of the muscles. •Its causative agent is the neurotoxin botulinum toxin, produced by the bacteria Clostridium botulinum. •About 1,000 cases are reported worldwide every year. An average of 110 cases are reported annually in the United State ...
... •Botulism is a serious illness that causes flaccid paralysis of the muscles. •Its causative agent is the neurotoxin botulinum toxin, produced by the bacteria Clostridium botulinum. •About 1,000 cases are reported worldwide every year. An average of 110 cases are reported annually in the United State ...
Gram Negative Bacteria
... clotting cascade, etc.) in the host in hopes to destroy the bacteria. This reaction, however, can also harm the host, leading to fever, hypotension, tachycardia, tachypnea, neutropenia, or potential multiorgan failure and death. X. ENDOTOXIN RESISTANT MICE [S10] a. Endotoxin resistant mice (lpsd): m ...
... clotting cascade, etc.) in the host in hopes to destroy the bacteria. This reaction, however, can also harm the host, leading to fever, hypotension, tachycardia, tachypnea, neutropenia, or potential multiorgan failure and death. X. ENDOTOXIN RESISTANT MICE [S10] a. Endotoxin resistant mice (lpsd): m ...
Coupling spatial segregation with synthetic circuits to control
... 2015). This ability is critical for realizing the full potential of synthetic biology for diverse applications in medicine, environment, and biotechnology (Benner & Sismour, 2005; Leduc et al, 2007; Keasling, 2008; Ruder et al, 2011; Weber & Fussenegger, 2012). To date, efforts in synthetic biology ...
... 2015). This ability is critical for realizing the full potential of synthetic biology for diverse applications in medicine, environment, and biotechnology (Benner & Sismour, 2005; Leduc et al, 2007; Keasling, 2008; Ruder et al, 2011; Weber & Fussenegger, 2012). To date, efforts in synthetic biology ...
Bug and Drugs Practical Microbiology
... 3 new UV-resistant Bacteria found living in Stratosphere (Janibacter hoylei, Bacillus isronensis and Bacillus aryabhata)* ...
... 3 new UV-resistant Bacteria found living in Stratosphere (Janibacter hoylei, Bacillus isronensis and Bacillus aryabhata)* ...
Bacteriophage
... What are Bacteriophages Viruses that attack bacteria were observed by Twort and d'Herelle in 1915 and 1917. They observed that broth cultures of certain intestinal bacteria could be dissolved by addition of a bacteria-free filtrate obtained from ...
... What are Bacteriophages Viruses that attack bacteria were observed by Twort and d'Herelle in 1915 and 1917. They observed that broth cultures of certain intestinal bacteria could be dissolved by addition of a bacteria-free filtrate obtained from ...
Abstract
... organisms use their substrates more efficiently and outcompete the polyP bacteria, which may be able to denitrify as well [33]. Nitrate introduced into an anaerobic, non-aerated phase without readily degradable extracellular carbon compounds favors the growth of denitrifying bacteria that possess in ...
... organisms use their substrates more efficiently and outcompete the polyP bacteria, which may be able to denitrify as well [33]. Nitrate introduced into an anaerobic, non-aerated phase without readily degradable extracellular carbon compounds favors the growth of denitrifying bacteria that possess in ...
LORUM IPSUM DOLORES 2008-2009 At vero eos et accumisto
... The MIC testing of the E. coli and Pseudomonas strains clearly show the potency of Arenicin-3 with a MIC50 value below 0,5 μg/ml and a MIC90 value below 1 μg/ml for the E. coli strains. This should be compared to a MIC90 value for both comparators which is above 8 μg/ml. For the pseudomonas strains ...
... The MIC testing of the E. coli and Pseudomonas strains clearly show the potency of Arenicin-3 with a MIC50 value below 0,5 μg/ml and a MIC90 value below 1 μg/ml for the E. coli strains. This should be compared to a MIC90 value for both comparators which is above 8 μg/ml. For the pseudomonas strains ...
Chapter 5: Small Gram-negative rods and coccobacilli
... visible: a round, hard, waxy type and a flatter, soft, glistening type. The haemolytic activity of this organism is characteristic of this species. The intensity of the haemolysis varies not only according to the type of erythrocyte used but also with the different serotypes. Mannitol fermentation a ...
... visible: a round, hard, waxy type and a flatter, soft, glistening type. The haemolytic activity of this organism is characteristic of this species. The intensity of the haemolysis varies not only according to the type of erythrocyte used but also with the different serotypes. Mannitol fermentation a ...
Differential Staining of Bacteria Microbiology Laboratory Instructions
... a. Gently touch an isolated colony of Staphylococcus epidermidis from a plate of bacteria. Transfer a very small amount of the organism with the inoculating edge of the transfer loop. (NOTE: When making smears from solid media, the most common error is the transfer of too much inoculum. If you have ...
... a. Gently touch an isolated colony of Staphylococcus epidermidis from a plate of bacteria. Transfer a very small amount of the organism with the inoculating edge of the transfer loop. (NOTE: When making smears from solid media, the most common error is the transfer of too much inoculum. If you have ...
Commensal Flora May Play Key Role in Spreading Antibiotic
... the counts of drug-resistant enterobacteria are higher than those of susceptible E. coli before treatment. After antibiotic treatments cease, total counts of enterobacteria return to baseline levels, suggesting colonization resistance is restored. Moreover, the multiresistant strain of Serratia is e ...
... the counts of drug-resistant enterobacteria are higher than those of susceptible E. coli before treatment. After antibiotic treatments cease, total counts of enterobacteria return to baseline levels, suggesting colonization resistance is restored. Moreover, the multiresistant strain of Serratia is e ...
Is antibiotic resistance inevitable?
... pounds. Many of these ‘natural’ antibiotics have desirable drug-like qualities, such as good bioavailability, the ability to cross the cell membrane (and outer membrane in the case of compounds with Gram-negative activity) and the ability to evade efflux systems, and chemical structures that favor b ...
... pounds. Many of these ‘natural’ antibiotics have desirable drug-like qualities, such as good bioavailability, the ability to cross the cell membrane (and outer membrane in the case of compounds with Gram-negative activity) and the ability to evade efflux systems, and chemical structures that favor b ...
III
... generally fit this description and in addition, but not exclusively, are all strict aerobes, catalase-positive, oxidase-negative, and often contain metachromatic granules. Until recently, the phytopathogenic coryneform bacteria were all classified in the genus Corynebacterium, primarily based on the ...
... generally fit this description and in addition, but not exclusively, are all strict aerobes, catalase-positive, oxidase-negative, and often contain metachromatic granules. Until recently, the phytopathogenic coryneform bacteria were all classified in the genus Corynebacterium, primarily based on the ...
J42015562
... diverse characteristics of support, bacterial cell surface, growth medium and their interactions [1]. Bacteria possess surface properties, related to their charge, hydrophobicity and Lewis acid/base characteristics; that are involved in interactions between bacteria and their environment. These prop ...
... diverse characteristics of support, bacterial cell surface, growth medium and their interactions [1]. Bacteria possess surface properties, related to their charge, hydrophobicity and Lewis acid/base characteristics; that are involved in interactions between bacteria and their environment. These prop ...
A Beginner’s Guide to Water Management — Bacteria Information Circular 106 Florida LAKEWATCH
... by acknowledging that bacteria have been around for a very long time. In fact, fossil remains tell us that one group of bacteria, known as Cyanobacteria, was among the first life forms to have been established on earth more than three billion years ago. Some scientists even theorize that these organ ...
... by acknowledging that bacteria have been around for a very long time. In fact, fossil remains tell us that one group of bacteria, known as Cyanobacteria, was among the first life forms to have been established on earth more than three billion years ago. Some scientists even theorize that these organ ...
A Beginner`s Guide to Water Management — Bacteria
... by acknowledging that bacteria have been around for a very long time. In fact, fossil remains tell us that one group of bacteria, known as Cyanobacteria, was among the first life forms to have been established on earth more than three billion years ago. Some scientists even theorize that these organ ...
... by acknowledging that bacteria have been around for a very long time. In fact, fossil remains tell us that one group of bacteria, known as Cyanobacteria, was among the first life forms to have been established on earth more than three billion years ago. Some scientists even theorize that these organ ...
Quenching of acyl-homoserine lactone
... An AHL-dependent QS mechanism was first described in the marine bacterium Vibrio fischeri (Photobacterium fischeri), where it is responsible for bioluminescence in a population density-dependent manner (Nealson et al., 1970; Eberhard, 1972; Kaplan & Greenebrg, 1985). The paradigm of QS, at the molec ...
... An AHL-dependent QS mechanism was first described in the marine bacterium Vibrio fischeri (Photobacterium fischeri), where it is responsible for bioluminescence in a population density-dependent manner (Nealson et al., 1970; Eberhard, 1972; Kaplan & Greenebrg, 1985). The paradigm of QS, at the molec ...
Simple Organisms, Fungi, and Plants
... and all over the ground. Most of them are so small that they can only be seen with a high-powered microscope. Despite their tiny size, bacteria and viruses have a huge impact on the world around you. You’ll ...
... and all over the ground. Most of them are so small that they can only be seen with a high-powered microscope. Despite their tiny size, bacteria and viruses have a huge impact on the world around you. You’ll ...
The spread of plasmids as a function of bacterial adaptability
... will be in the position to become established with the resident plasmid. Therefore, selection pressures must exist to favour the horizontal spread of genetically different replicons. Indeed, a large scale of various genetically different replicons occurring in wild-type strains have been detected an ...
... will be in the position to become established with the resident plasmid. Therefore, selection pressures must exist to favour the horizontal spread of genetically different replicons. Indeed, a large scale of various genetically different replicons occurring in wild-type strains have been detected an ...
Consent Agenda - Geisel School of Medicine
... Microorganisms have been traditionally differentiated from animals and true plants on the basis of their relatively simple biological-organization. The higher plants and animals are multicellular and develop distinct tissue regions that differ from one another with respect to the kinds of cells of w ...
... Microorganisms have been traditionally differentiated from animals and true plants on the basis of their relatively simple biological-organization. The higher plants and animals are multicellular and develop distinct tissue regions that differ from one another with respect to the kinds of cells of w ...
ALTERAÇÕES ULTRAESTRUTURAIS EM BACTÉRIAS EXPOSTAS
... multidrug resistant (MDR) bacteria16. Since antibiotics became a medication with a broad and indiscriminate use, bacteria developed resistance against most standard antibacterial agents as well as adverse side effects due to higher dose prescription17 resulting in a world health problem. Thus, the d ...
... multidrug resistant (MDR) bacteria16. Since antibiotics became a medication with a broad and indiscriminate use, bacteria developed resistance against most standard antibacterial agents as well as adverse side effects due to higher dose prescription17 resulting in a world health problem. Thus, the d ...
MEDICAL BACTERIOLOGY Lesson № 19 STAPHYLOCOCCI
... technique they retain carbolfuchsine dye when the rods are decolourised with acid (see Lesson 3). As a result the spores stain red when vegetative cells stain blue. The spores can be found localised inside of the bacterial ...
... technique they retain carbolfuchsine dye when the rods are decolourised with acid (see Lesson 3). As a result the spores stain red when vegetative cells stain blue. The spores can be found localised inside of the bacterial ...
original version
... of each other at the active site. Interestingly, these metal ions are essential for the cleavage of the ester bond on the lactone ring and the proper folding of the enzyme [38]. Besides the zinc ions, the highly conserved metal-binding histidine or the aspartate residues and Tyr-194 in the AiiA demo ...
... of each other at the active site. Interestingly, these metal ions are essential for the cleavage of the ester bond on the lactone ring and the proper folding of the enzyme [38]. Besides the zinc ions, the highly conserved metal-binding histidine or the aspartate residues and Tyr-194 in the AiiA demo ...
Bacteria
Bacteria (/bækˈtɪəriə/; singular: bacterium) constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep portions of Earth's crust. Bacteria also live in symbiotic and parasitic relationships with plants and animals. They are also known to have flourished in manned spacecraft.There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. There are approximately 5×1030 bacteria on Earth, forming a biomass which exceeds that of all plants and animals. Bacteria are vital in recycling nutrients, with many of the stages in nutrient cycles dependent on these organisms, such as the fixation of nitrogen from the atmosphere and putrefaction. In the biological communities surrounding hydrothermal vents and cold seeps, bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. On 17 March 2013, researchers reported data that suggested bacterial life forms thrive in the Mariana Trench, which with a depth of up to 11 kilometres is the deepest part of the Earth's oceans. Other researchers reported related studies that microbes thrive inside rocks up to 580 metres below the sea floor under 2.6 kilometres of ocean off the coast of the northwestern United States. According to one of the researchers, ""You can find microbes everywhere — they're extremely adaptable to conditions, and survive wherever they are.""Most bacteria have not been characterized, and only about half of the phyla of bacteria have species that can be grown in the laboratory. The study of bacteria is known as bacteriology, a branch of microbiology.There are approximately ten times as many bacterial cells in the human flora as there are human cells in the body, with the largest number of the human flora being in the gut flora, and a large number on the skin. The vast majority of the bacteria in the body are rendered harmless by the protective effects of the immune system, and some are beneficial. However, several species of bacteria are pathogenic and cause infectious diseases, including cholera, syphilis, anthrax, leprosy, and bubonic plague. The most common fatal bacterial diseases are respiratory infections, with tuberculosis alone killing about 2 million people per year, mostly in sub-Saharan Africa. In developed countries, antibiotics are used to treat bacterial infections and are also used in farming, making antibiotic resistance a growing problem. In industry, bacteria are important in sewage treatment and the breakdown of oil spills, the production of cheese and yogurt through fermentation, and the recovery of gold, palladium, copper and other metals in the mining sector, as well as in biotechnology, and the manufacture of antibiotics and other chemicals.Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea.