Significant year-round effect of small mixotrophic flagellates on
... was rather constant throughout the year. In light of these past studies, our results could not yield a global estimation of the grazing effect of mixotrophs because we did not perform measurements during a ...
... was rather constant throughout the year. In light of these past studies, our results could not yield a global estimation of the grazing effect of mixotrophs because we did not perform measurements during a ...
cilia regeneration in tetrahymena and its inhibition
... to illuminate this problem. The results indicate that at about the same time the cells are overcoming colchicine inhibition, the concentration of colchicine-'H which has been taken up begins to decrease. It is relevant to point out here that no such spontaneous recovery from colchicine inhibition of ...
... to illuminate this problem. The results indicate that at about the same time the cells are overcoming colchicine inhibition, the concentration of colchicine-'H which has been taken up begins to decrease. It is relevant to point out here that no such spontaneous recovery from colchicine inhibition of ...
Detection of Viable but Nonculturable Cells of Listeria
... VBNC cells. As well as offering many attractive features, the DEFT method is a practical method for enumerating bacteria at high concentrations, while its detection limit with food samples is around 3–4 log10 units (López-Campos et al. 2012). The foundation of any method is its accurateness. In this ...
... VBNC cells. As well as offering many attractive features, the DEFT method is a practical method for enumerating bacteria at high concentrations, while its detection limit with food samples is around 3–4 log10 units (López-Campos et al. 2012). The foundation of any method is its accurateness. In this ...
Engineering key components in a synthetic eukaryotic
... which permits distribution and reproduction in any medium, provided the original author and source are credited. Creation of derivative works is permitted but the resulting work may be distributed only under the same or similar licence to this one. This licence does not permit commercial exploitatio ...
... which permits distribution and reproduction in any medium, provided the original author and source are credited. Creation of derivative works is permitted but the resulting work may be distributed only under the same or similar licence to this one. This licence does not permit commercial exploitatio ...
Serial endosymbiosis or singular event at the origin of eukaryotes?
... ‘fallacy of misplaced concreteness,’ they correlate computer code with names given by ‘authorities’ to organisms they never see!” (Margulis, 2006). While there may be more than a grain of truth in this, her repudiation of phylogenetics was equally dogmatic, and in stark contrast to her early vision ...
... ‘fallacy of misplaced concreteness,’ they correlate computer code with names given by ‘authorities’ to organisms they never see!” (Margulis, 2006). While there may be more than a grain of truth in this, her repudiation of phylogenetics was equally dogmatic, and in stark contrast to her early vision ...
Effect of Growth at Sub-lethal Concentrations of Kanamycin on the
... capsule may prevent further inhibition of protein synthesis by kanamycin and allow the synthesis of properly folded membrane proteins to take place in the cells (thus inducing the recovery of the cell membrane) since an increase in the thickness of the capsule may impede the movement of kanamycin in ...
... capsule may prevent further inhibition of protein synthesis by kanamycin and allow the synthesis of properly folded membrane proteins to take place in the cells (thus inducing the recovery of the cell membrane) since an increase in the thickness of the capsule may impede the movement of kanamycin in ...
Promiscuous and specific bacterial symbiont acquisition in the
... Here we focus on members of the amoeboid genus Nuclearia (Opisthokonta, Nucleariidae) which can live in symbiosis with ecto- and endosymbiotic bacteria. Nuclearia is a single genus in the family Nucleariidae which is a sister group to Fungi (Zettler et al. 2001; Steenkamp, Wright and Baldauf 2006; L ...
... Here we focus on members of the amoeboid genus Nuclearia (Opisthokonta, Nucleariidae) which can live in symbiosis with ecto- and endosymbiotic bacteria. Nuclearia is a single genus in the family Nucleariidae which is a sister group to Fungi (Zettler et al. 2001; Steenkamp, Wright and Baldauf 2006; L ...
Physiological Structure and Single
... given assemblage is not a simple function of the rates of cell division and activation, but rather depends as well on the loss rates. Likewise, because of their size, and also the relative recalcitrance of their cellular components (see, e.g., McCarthy et al. 1998), dead or inactive bacteria may rem ...
... given assemblage is not a simple function of the rates of cell division and activation, but rather depends as well on the loss rates. Likewise, because of their size, and also the relative recalcitrance of their cellular components (see, e.g., McCarthy et al. 1998), dead or inactive bacteria may rem ...
A Definitive, Rapid Alternative to the Gram Stain Assay
... The Gram stain assay differentiates bacteria into two groups. Gram positive organisms have high levels of peptidoglycan in their cell walls, which retain the primary crystal violet stain and appear purple. The Gram negative cell wall contains small levels of peptidoglycan but also contains an outer ...
... The Gram stain assay differentiates bacteria into two groups. Gram positive organisms have high levels of peptidoglycan in their cell walls, which retain the primary crystal violet stain and appear purple. The Gram negative cell wall contains small levels of peptidoglycan but also contains an outer ...
1 Sporulation, bacterial cell envelopes, and the origin of life Elitza I
... cells. We also review the images of Gram-negative and Gram-positive cell walls that show they are more closely related than previously thought, and explain how this provides critical support for the hypothesis. Mapping the distribution of cell envelope architectures onto the most recent phylogenetic ...
... cells. We also review the images of Gram-negative and Gram-positive cell walls that show they are more closely related than previously thought, and explain how this provides critical support for the hypothesis. Mapping the distribution of cell envelope architectures onto the most recent phylogenetic ...
Introduction to Microbiology
... using sterilized equipment showed that growth of micro-organisms was possible only if an opportunity for outside contamination was provided. Rise of microbiology has refined the traditional microbiological processes and has added entirely new processes such as production of organic acids, solvents, ...
... using sterilized equipment showed that growth of micro-organisms was possible only if an opportunity for outside contamination was provided. Rise of microbiology has refined the traditional microbiological processes and has added entirely new processes such as production of organic acids, solvents, ...
Identity and activity of marine microbial populations as
... ecosystems has undergone an exciting revolution. The application of epifluorescence microscopy to enumerate bacteria in marine samples (Zimmermann R, 1974; Hobbie et al., 1977) has changed the paradigm derived from cultivation approaches that prokaryotes were typically rare and therefore unimportant ...
... ecosystems has undergone an exciting revolution. The application of epifluorescence microscopy to enumerate bacteria in marine samples (Zimmermann R, 1974; Hobbie et al., 1977) has changed the paradigm derived from cultivation approaches that prokaryotes were typically rare and therefore unimportant ...
Salmonella must be viable in order to attach to the
... 4 cm long. The potato cores were blanched by immersion in boiling water for 30 s. Blanching allowed the potato cells to separate from each other when snapped but still remain as intact cells (Parker et al. 2001). Blanching for 30 s resulted in a gradient of cell separation across the potato tissue c ...
... 4 cm long. The potato cores were blanched by immersion in boiling water for 30 s. Blanching allowed the potato cells to separate from each other when snapped but still remain as intact cells (Parker et al. 2001). Blanching for 30 s resulted in a gradient of cell separation across the potato tissue c ...
Microbiology with basis immunology_1
... A. They usually act at a tissue site in the host that is removed from the site of bacterial growth B. They typically have an enzymatic (specific) type of activity C. They can be converted into toxoids. D. none of the above E. They are nonantigenic. ANSWER: E The portion of the bacterial lipopolysacc ...
... A. They usually act at a tissue site in the host that is removed from the site of bacterial growth B. They typically have an enzymatic (specific) type of activity C. They can be converted into toxoids. D. none of the above E. They are nonantigenic. ANSWER: E The portion of the bacterial lipopolysacc ...
Canadian Journal of Microbiology 47
... 1987), the bacterium A. brasilense has been found to survive for prolonged periods (Bashan and Gonzalez 1999). As a seed or root inoculant, diazotrophic A. brasilense nonspecifically promotes the growth of many terrestrial plants, and increases the yield of numerous crop plants (Bashan and Holguin 1 ...
... 1987), the bacterium A. brasilense has been found to survive for prolonged periods (Bashan and Gonzalez 1999). As a seed or root inoculant, diazotrophic A. brasilense nonspecifically promotes the growth of many terrestrial plants, and increases the yield of numerous crop plants (Bashan and Holguin 1 ...
Denitrification of water in a microbial fuel cell (MFC) using seawater
... The sea contains various microbes which have an ability to reduce and oxidize substances like iron, sulphur, and nitrate. Most of these processes happen in the seawater, but can also be applied for purification of wastewater. In the present work, a consortium of seawater bacteria has been used for t ...
... The sea contains various microbes which have an ability to reduce and oxidize substances like iron, sulphur, and nitrate. Most of these processes happen in the seawater, but can also be applied for purification of wastewater. In the present work, a consortium of seawater bacteria has been used for t ...
November 2012 - An error occurred.
... on PhysOrg titled, “Inspiration from Mother Nature leads to improved wood.” It’s not that wood is faulty for trees, but in construction, builders would like to prevent moisture absorption and warping. The article says, “wood’s position as a mainstay building material over the centuries results from ...
... on PhysOrg titled, “Inspiration from Mother Nature leads to improved wood.” It’s not that wood is faulty for trees, but in construction, builders would like to prevent moisture absorption and warping. The article says, “wood’s position as a mainstay building material over the centuries results from ...
Microbiology of the Rumen - Iowa State University: Animal Science
... 500-20,000 α-(1, 4)-D-glucose units with a few α-1, 6 branches. Amylose can form an extended shape. Hydrogen bonding occurs between aligned chains. The aligned chains may form double stranded crystallites that are resistant to amylases. Amylopectin is formed by non-random α-1, 6 branching of the amy ...
... 500-20,000 α-(1, 4)-D-glucose units with a few α-1, 6 branches. Amylose can form an extended shape. Hydrogen bonding occurs between aligned chains. The aligned chains may form double stranded crystallites that are resistant to amylases. Amylopectin is formed by non-random α-1, 6 branching of the amy ...
invited review - AJP
... In most species, including humans, uptake of Tg by thyrocytes occurs exclusively by micropinocytosis, which can be either nonspecific (fluid phase) or receptor mediated (Fig. 1). Both forms of micropinocytosis (also called endocytosis or vesicular internalization) involve the formation of small vesi ...
... In most species, including humans, uptake of Tg by thyrocytes occurs exclusively by micropinocytosis, which can be either nonspecific (fluid phase) or receptor mediated (Fig. 1). Both forms of micropinocytosis (also called endocytosis or vesicular internalization) involve the formation of small vesi ...
Cloning, Expression in Escherichia coli, and Characterization of
... Screening of bacterial colonies for B-glucosidase, cellobiohydrolase, and endoglucanase activity. Azoarcus strains growing exponentially on VM medium were streaked on KW plates with or without D-glucose, incubatcd for 4 days at 37°C, and then incubated at 37°C with the appropriate overlay to screen ...
... Screening of bacterial colonies for B-glucosidase, cellobiohydrolase, and endoglucanase activity. Azoarcus strains growing exponentially on VM medium were streaked on KW plates with or without D-glucose, incubatcd for 4 days at 37°C, and then incubated at 37°C with the appropriate overlay to screen ...
Experimental conditions affect the site of tetrazolium
... facilitate reduction reactions. These salts have been used in microplate assays to measure bacterial proliferation (Tsukatani et al., 2008) and in colorimetric assays to test antimicrobial susceptibility (Tsukatani et al., 2008; Tunney et al., 2004). The mechanisms of tetrazolium salt reduction are ...
... facilitate reduction reactions. These salts have been used in microplate assays to measure bacterial proliferation (Tsukatani et al., 2008) and in colorimetric assays to test antimicrobial susceptibility (Tsukatani et al., 2008; Tunney et al., 2004). The mechanisms of tetrazolium salt reduction are ...
IN VITRO BARK EXTRACTS
... Trichophyton rubrum) [18]. The most susceptible bacterial and fungal strains were Staphylococcus aureus and Trichophyton rubrum, for methanolic of roots showed MIC value of 0.078mg/ml and 0.156 mg/ml respectively. Our results were congruent with the results of others. Anticancer activity MTT is cons ...
... Trichophyton rubrum) [18]. The most susceptible bacterial and fungal strains were Staphylococcus aureus and Trichophyton rubrum, for methanolic of roots showed MIC value of 0.078mg/ml and 0.156 mg/ml respectively. Our results were congruent with the results of others. Anticancer activity MTT is cons ...
Ranjit Kumar
... luminescence of these 20 strains was also studied. In this part of experiment, visual scoring was done to categorize the luminescence. In case of salinity, it has been found that up to 6% of NaCl the intense of luminescence was good and thereafter it declined. Further, in some strains it was complet ...
... luminescence of these 20 strains was also studied. In this part of experiment, visual scoring was done to categorize the luminescence. In case of salinity, it has been found that up to 6% of NaCl the intense of luminescence was good and thereafter it declined. Further, in some strains it was complet ...
Audible Sound in Form of Music Can Influence Microbial Growth
... environmental factors, has a wide distribution in natural world. When sounds of different tone, pitch, volume or frequency are integrated in a defined way, it produces music [2]. A sound wave can be viewed as a disturbance transported through a medium via particle interaction and hence it can be cha ...
... environmental factors, has a wide distribution in natural world. When sounds of different tone, pitch, volume or frequency are integrated in a defined way, it produces music [2]. A sound wave can be viewed as a disturbance transported through a medium via particle interaction and hence it can be cha ...
Strep throat
... • Rapid strep test-analyzes bacteria in throat to see if strep is the cause. • Throat culture-analyzes cells in back of throat. The cells are placed in container with substances that promote strep growth. If strep bacteria do grow, the culture is positive. • Throat culture is more accurate. ...
... • Rapid strep test-analyzes bacteria in throat to see if strep is the cause. • Throat culture-analyzes cells in back of throat. The cells are placed in container with substances that promote strep growth. If strep bacteria do grow, the culture is positive. • Throat culture is more accurate. ...
Chemotaxis
Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (e.g., glucose) by swimming toward the highest concentration of food molecules, or to flee from poisons (e.g., phenol). In multicellular organisms, chemotaxis is critical to early development (e.g., movement of sperm towards the egg during fertilization) and subsequent phases of development (e.g., migration of neurons or lymphocytes) as well as in normal function. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.Positive chemotaxis occurs if the movement is toward a higher concentration of the chemical in question; negative chemotaxis if the movement is in the opposite direction. Chemically prompted kinesis (randomly directed or nondirectional) can be called chemokinesis.