Vol 1. Oral presentations. 6th International PGPR workshop
... for stabilization of mass culture of marine microalgae used as a feed for marine organisms, all with promising results. This aspect of the effect of PGPB on water microorganisms is currently in its infancy. We propose that co-immobilization of microalgae and plant growth-promoting bacteria are an ef ...
... for stabilization of mass culture of marine microalgae used as a feed for marine organisms, all with promising results. This aspect of the effect of PGPB on water microorganisms is currently in its infancy. We propose that co-immobilization of microalgae and plant growth-promoting bacteria are an ef ...
Cultivation of purple phototrophic bacteria using
... processing waste water [2]. The sago effluent contains bark and pith residues. This waste is sometimes used as dietary fibre for animal food or it is burned. This waste was photometabolized by Rhodopseudomonas palustris which is a rich source of proteins. These bacteria also produce bioplastics [3,4 ...
... processing waste water [2]. The sago effluent contains bark and pith residues. This waste is sometimes used as dietary fibre for animal food or it is burned. This waste was photometabolized by Rhodopseudomonas palustris which is a rich source of proteins. These bacteria also produce bioplastics [3,4 ...
Ancient bacteria–amoeba relationships and pathogenic animal
... case, while the B. bronchiseptica bacteria were protected inside the amoebas. This result was confirmed with a similar experiment allowing B. bronchiseptica to invade another amoeba species distantly related to D. discoideum, A. castellanii. When D. discoideum went through the social stage, B. bronc ...
... case, while the B. bronchiseptica bacteria were protected inside the amoebas. This result was confirmed with a similar experiment allowing B. bronchiseptica to invade another amoeba species distantly related to D. discoideum, A. castellanii. When D. discoideum went through the social stage, B. bronc ...
... abundant and were found aggregated around unhealthy Microcystis cells and were the probable cause of deflation and lysis. These bacteria may have utilized the cyanobacteria cell contents as their nutrient source. In contrast to the control areas, the cyanobacteria cells were healthy and did not show ...
General Dairy Bacteriology - Food Safety Laboratory and Milk
... Bacteria are single celled organisms that can only be seen with a microscope (“microorganisms”). All processes needed for life occur within a single cell. Most bacteria are considered prokaryotes. Their basic cell structure differs from cells of plants and animals (eukaryotes); for example they lack ...
... Bacteria are single celled organisms that can only be seen with a microscope (“microorganisms”). All processes needed for life occur within a single cell. Most bacteria are considered prokaryotes. Their basic cell structure differs from cells of plants and animals (eukaryotes); for example they lack ...
Distribution and prevalence of bacteria found on the door handles of
... on the door handles. These results imply that the majority of bacteria found on door handles came from hand contact with the door handles. Hours 11am to 1pm showed a significantly higher amount of bacterial colonies with the 12pm sample being the maximum number of colonies. These results correlate w ...
... on the door handles. These results imply that the majority of bacteria found on door handles came from hand contact with the door handles. Hours 11am to 1pm showed a significantly higher amount of bacterial colonies with the 12pm sample being the maximum number of colonies. These results correlate w ...
5: Antibiotic Development
... and ease of administration increased the acceptability of an antibiotic and reduced the medical care costs associated with it. If bacteria were passive when faced with antibacterials, the sulfonamides would have remained potent therapy. Bacteria are not passive. Through mutation and selection, they ...
... and ease of administration increased the acceptability of an antibiotic and reduced the medical care costs associated with it. If bacteria were passive when faced with antibacterials, the sulfonamides would have remained potent therapy. Bacteria are not passive. Through mutation and selection, they ...
Measurement of Protozoan Grazing on Bacteria by Means of [ H
... most important microbial processes in natural aquatic ecosystems. Heterotrophic nanoflagellates (HNF), whose cell sizes range between 1 and 10 µm, are regarded to be the main bacterial consumers [1, 2, 3]. The first experiments on the role of protozoan grazing in aquatic environments were conducted ...
... most important microbial processes in natural aquatic ecosystems. Heterotrophic nanoflagellates (HNF), whose cell sizes range between 1 and 10 µm, are regarded to be the main bacterial consumers [1, 2, 3]. The first experiments on the role of protozoan grazing in aquatic environments were conducted ...
Meningitis Fact Sheet
... and spinal cord. The inflammation may be caused by viruses, bacteria, or other microorganisms as well as drugs (which is rare). The two primary classifications of meningitis are viral and bacterial. Viral meningitis is caused by viruses while bacterial meningitis is caused by bacteria. Bacterial Men ...
... and spinal cord. The inflammation may be caused by viruses, bacteria, or other microorganisms as well as drugs (which is rare). The two primary classifications of meningitis are viral and bacterial. Viral meningitis is caused by viruses while bacterial meningitis is caused by bacteria. Bacterial Men ...
Role of Bacterial Exopolysaccharides in Organic Chloramine
... Organic chloramines form as inorganic chloramines or aqueous chlorine react with nitrogen-containing organic matter present in surface waters or in biofilms. Determination of disinfectant concentration in distribution system is critical for disinfectant residual compliance by water utilities. Organi ...
... Organic chloramines form as inorganic chloramines or aqueous chlorine react with nitrogen-containing organic matter present in surface waters or in biofilms. Determination of disinfectant concentration in distribution system is critical for disinfectant residual compliance by water utilities. Organi ...
AS Microbiology and Antibiotic Resistance Sep 2012
... Mechanisms Of Antibiotic Resistance • Bacteria are capable of becoming resistant through several mechanisms • One or many mechanisms may exist in an organism • Multidrug-resistant bacteria often have multiple mechanisms • Genes encoding resistance may exist on plasmid or chromosome ...
... Mechanisms Of Antibiotic Resistance • Bacteria are capable of becoming resistant through several mechanisms • One or many mechanisms may exist in an organism • Multidrug-resistant bacteria often have multiple mechanisms • Genes encoding resistance may exist on plasmid or chromosome ...
1 - ScienceA2Z.com
... of implanted medical devices, and bacteria protected within biofilms are much harder to kill than individual isolated bacteria. Even more complex morphological changes are sometimes possible. For example, when starved of amino acids, Myxobacteria detect surrounding cells in a process known as quorum ...
... of implanted medical devices, and bacteria protected within biofilms are much harder to kill than individual isolated bacteria. Even more complex morphological changes are sometimes possible. For example, when starved of amino acids, Myxobacteria detect surrounding cells in a process known as quorum ...
Taxonomically Significant Colour Changes in
... amongst the 93 bacteria tested. Concurrently a numerical taxonomic survey was being conducted on 233 coryneform and related bacteria including the 93 strains used here (D. Jones and J. Watkins, unpublished). The results of the taxonomic work showed a close relationship (85 "/o similarity) between th ...
... amongst the 93 bacteria tested. Concurrently a numerical taxonomic survey was being conducted on 233 coryneform and related bacteria including the 93 strains used here (D. Jones and J. Watkins, unpublished). The results of the taxonomic work showed a close relationship (85 "/o similarity) between th ...
Lecture 07 - Laboratory Procedures
... A small glass tube is inverted & placed into the test tube containing liquid culture so that it fills with broth. Gas produced by the fermentation of bacteria will be trapped in the inverted tube. The gas can then be compared to a standardized curve to estimate the number of organisms present in the ...
... A small glass tube is inverted & placed into the test tube containing liquid culture so that it fills with broth. Gas produced by the fermentation of bacteria will be trapped in the inverted tube. The gas can then be compared to a standardized curve to estimate the number of organisms present in the ...
Welcome to Biology 122
... This is basically the gametic shortcut… spores become gametes… if the mitosis of myxamoebae is not considered equivalent to the production of a multicellular gametophyte. ...
... This is basically the gametic shortcut… spores become gametes… if the mitosis of myxamoebae is not considered equivalent to the production of a multicellular gametophyte. ...
Feature Article - American Society for Microbiology
... microbe to be considered the cause of a disease, it must be (i) consistently found in association with the disease, (ii) isolated from the disease, and (iii) able to produce the disease in its isolated state . These precepts, which came to be more commonly known as Koch’s postulates because of the d ...
... microbe to be considered the cause of a disease, it must be (i) consistently found in association with the disease, (ii) isolated from the disease, and (iii) able to produce the disease in its isolated state . These precepts, which came to be more commonly known as Koch’s postulates because of the d ...
Cell–cell signalling in bacteria: not simply a matter of quorum
... factors, synthesis of antimicrobial compounds, production of exopolysaccharides, motility, biofilm development, etc. QScontrolled processes are often crucial for successful bacteria– host interactions, whether symbiotic or pathogenic. The concept of AHL-mediated bacterial communication was initially ...
... factors, synthesis of antimicrobial compounds, production of exopolysaccharides, motility, biofilm development, etc. QScontrolled processes are often crucial for successful bacteria– host interactions, whether symbiotic or pathogenic. The concept of AHL-mediated bacterial communication was initially ...
Growth and killing of a Salmonella enterica serovar
... Ultracut ultramicrotome at 60 nm using a Diatome knife, contrasted with uranyl acetate and lead citrate, and examined in a Philips CM100 transmission electron microscope. For immuno-electron microscopy, HeLa cells were infected with either wild-type or sifA mutant strains. At 10 h after bacterial en ...
... Ultracut ultramicrotome at 60 nm using a Diatome knife, contrasted with uranyl acetate and lead citrate, and examined in a Philips CM100 transmission electron microscope. For immuno-electron microscopy, HeLa cells were infected with either wild-type or sifA mutant strains. At 10 h after bacterial en ...
Quaternary ammonium compounds in cosmetic products Risk
... the skin, mouth and gastrointestinal tract and the upper respiratory tract. The normal flora contains numerous bacterial species, and numerous strains within each species. Although it may contain pathogens, the vast majority are commensals that contribute to general health as well as to resistance t ...
... the skin, mouth and gastrointestinal tract and the upper respiratory tract. The normal flora contains numerous bacterial species, and numerous strains within each species. Although it may contain pathogens, the vast majority are commensals that contribute to general health as well as to resistance t ...
Commensal Flora May Play Key Role in Spreading Antibiotic
... Second, because the commensal genetic pool is so large, it encompasses many more potential means for conferring resistance, including not only single-nucleotide mutations but also complex resistance mechanisms that ordinarily remain more or less silent within subdominant species. Third, resistant co ...
... Second, because the commensal genetic pool is so large, it encompasses many more potential means for conferring resistance, including not only single-nucleotide mutations but also complex resistance mechanisms that ordinarily remain more or less silent within subdominant species. Third, resistant co ...
Phylogeny of Prosthecobacter, the Fusiform Caulobacters: Members
... To determine the relatedness of the genus Prosthecobacter to dimorphic caulobacters and other prosthecate members of the (Y subgroup of the Proteobacteria (a-Proteobacteria),we isolated and sequenced 16s rRNA genes from four Prosthecobacter strains. Surprisingly, the results of phylogenetic analyses ...
... To determine the relatedness of the genus Prosthecobacter to dimorphic caulobacters and other prosthecate members of the (Y subgroup of the Proteobacteria (a-Proteobacteria),we isolated and sequenced 16s rRNA genes from four Prosthecobacter strains. Surprisingly, the results of phylogenetic analyses ...
Journal of Eukaryotic Microbiology
... acting through physical contact with the prey alga. Three experimental techniques have distinguished between these two general strategies. The first tests for the presence of algicidal activity in cell-free spent media from algicidal bacteria by its effect on the target algae (Baker and Herson 1978, ...
... acting through physical contact with the prey alga. Three experimental techniques have distinguished between these two general strategies. The first tests for the presence of algicidal activity in cell-free spent media from algicidal bacteria by its effect on the target algae (Baker and Herson 1978, ...
gramstain.pdf
... Gram stain technique is most reliable when applied to 24-48 hour cultures. Older cultures of ordinarily Gram positive bacteria (those that are stained) may appear as Gram negative bacteria. This is because the stains do not adhere well to older structures. The Gram stain procedure is probably the si ...
... Gram stain technique is most reliable when applied to 24-48 hour cultures. Older cultures of ordinarily Gram positive bacteria (those that are stained) may appear as Gram negative bacteria. This is because the stains do not adhere well to older structures. The Gram stain procedure is probably the si ...
the ultrastructure of prokaryotic
... This particle array is not evident on the E face of the pocket membrane, nor are complementary depressions found there (Fig. 9). In favourable thin sections through the edges of the pockets, no densities in the lipid bilayer corresponding to the particle seam are observed (Fig. 3 A). In addition, th ...
... This particle array is not evident on the E face of the pocket membrane, nor are complementary depressions found there (Fig. 9). In favourable thin sections through the edges of the pockets, no densities in the lipid bilayer corresponding to the particle seam are observed (Fig. 3 A). In addition, th ...
Patterned Protein Microarrays for Bacterial Detection
... with two different bacterial species. Patterning antibodies into a microarray was accomplished by the use of microcontact printing (µCP). The µCP method, introduced and developed by Whitesides et al. [8,9], has been used to pattern a variety of different proteins [10-16]. Moreover the µCP method, al ...
... with two different bacterial species. Patterning antibodies into a microarray was accomplished by the use of microcontact printing (µCP). The µCP method, introduced and developed by Whitesides et al. [8,9], has been used to pattern a variety of different proteins [10-16]. Moreover the µCP method, al ...
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.