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Showing 1 to 20 of 142 for “"growth medium"”.
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Experimental improvement of flyash as a growth medium for plants through addition of selected solid wastes
… Aside from the chemical limitations to plant growth, the compacted nature results in low porosity which can limit plant available moisture. Plant root penetration is also impeded which limits nutrient uptake. The basis of this study was to incorporate other selected waste materials into the …
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Development of a growth medium for the isolation of potential probiotic bacteria from the porcine gut microbiome : Pilot study
Sian suolistomikrobiomi on monimutkainen sekoitus monenlaisia mikrobeja. Suoliston mikrobien välinen tasapaino voi muuttua joidenkin sairauksien yhteydessä, jolloin haitalliset bakteerit saattavat lisääntyä terveydelle haitallisiksi pitoisuuksiksi. Antibioottien käyttöä voidaan välttää …
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The effects of growth medium acidity, exogenous growth regulators, and nitrogen fertilizer on the acceleration of Fraser fir seedling growth
… were tested in an attempt to accelerate the growth of Abies fraseri seedlings grown in containers in a greenhouse: growth medium acidity. foliar application of growth regulators. and supply of nitrogen fertilizer. Sphagnum peat growth medium was adjusted with a to 8 kg dolomitic limestone/m3 …
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Photosynthesis and nutrition in In Vitro plants
… for losses at this stage. Results show that growth irradiance, CO 2 and carbohydrate in the growth medium are all factors which combine to affect the development of photosynthetic capability in vitro. Low capacity for the photochemical dissipation of excess light energy is primarily a result …
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Fatty Acid and Biotin Metabolism in Escherichia Coli
… intermediate `X', was purified from the spent growth medium of strain sup151 (isolated as a bypass suppressor of a bioH mutation). Genetic data suggests that this intermediate is made by the action of the bioH and bioC gene products and its production is repressed by high levels of biotin in …
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Alicaligenes faecalis : identification and study of its antagonistic properties against Botrytis cinerea
… aerobic flagellated bacterium with fungal growth inhibitory properties was isolated from a culture of Trichoderma harzianum. According to its cultural characteristics and biochemical properties it was identified as a strain of Alcaligenes (aeca/is Castellani and Chalmers. Antisera prepared …
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Continuous Microbial Production of 2,3-Butylene Glycol From Cheese Whey Permeate
The utilization of whey permeate as a growth medium for Bacillus polymyxa and the improved productivity of 2,3-butylene glycol by B. polymyxa through continuous fermentation were accomplished. B. polymyxa and Klebsiella oxytoca fermentations were compared. Results suggested the regulatory mechanism …
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The anti-fungal and anti-oxidant properties of polyphenols extracted from the resurrection plant, Myrothamnus flabellifolia
… the effects of M. flabellifolia polyphenols on growth of S. cerevisiae yeast strains was investigated. This study showed that M flabellifolia polyphenols inhibited growth of both the wild type and the Δhsp 12 yeast strains largely by binding protein in the growth medium. A decreased specific …
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Effect of temperature-induced membrane lipid phase transition in recipient cells on conjugation in Escherichia coli K-12
… of viability following inhibition of cell growth by.a temperature-induced membrane lipid phase transition. In matings with a F-like, R-factor donor, strain K1059 demonstrated a measurably reduced recipient ability at temperatures below 35.5 C when growth medium was supplemented with …
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Molecular, Genetic and Physiological Studies on the Regulation of Conjugal Transfer of the Ti Plasmid pTiC58 by Agrobacterium Tumefaciens
… by sensing the concentration of AAI in the growth medium.
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Evaluating the Hydrologic and Thermal Performance of a Green Roof in Syracuse: Measurements and Modeling of a Full-Scale System
… on green roof functions, virgin and 7-year-old growth media were characterized and the impact of the observed changes on hydrologic performance was assessed. Differences in structure (particle size distribution, porosity, organic content, density) and some hydrologic properties were observed. …
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Process integration in the optimisation of amidase production from recombinant Escherichia coli
… recombinant E.coli BL21 (DE3). The choice of growth medium and induction strategy were optimised under bioreactor conditions to enhance amidase productivity. Further, expanded bed adsorption (EBA) was assessed as a tool for minimising the unit operations in the amidase purification train. The …
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Characterisation of nitrogen stress response genes of the marine Alga Gracilaria Gracilis
… by seaweeds that is most frequently limiting to growth. Biomass, relative growth rate, the concentration of nitrogen in the growth medium, the mean nitrogen uptake rate of the plant and the amount of nitrogen in the thallus were determined for nitrogen enriched and nitrogen deprived G. gracilis …
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Effect of Surface Chemistry and Young's Modulus on the Surface Motility of the Bacterium Pseudomonas Aeruginosa
… to continuously flowing tryptic soy broth growth medium at 37 ⁰C. Not only are the mean speeds different, the distributions of speeds are also different: on the hydrophobic substrate, a smaller proportion of bacteria move by less than about one body-length (~3 µm) in 60 minutes. In …
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Biochemical Characterizations of a Soybean (Glycine Max (L.) Merr. ) Nitrate Reductase Mutant and Crude and Purified Nitrate Reductases
… functional in the absence of NO(,3)('-) in the growth medium (constitutive forms; c(,1)NR, c(,2)NR) and the third active after induction by NO(,3)('-) (inducible form; iNR). Experiments were conducted to determine the site of effect of a mutation which resulted in loss of cNR activity in the …
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Characterization of the Broad-Spectrum Racemase, BsrF, in Vibrio fischeri
… including as modifiers of peptidoglycan and as growth substrates. A Bsr was identified in Vibrio fischeri, BsrF, that appears to be localized to the periplasm. The main objective of this study was to determine the substrate range of BsrF for proteinogenic L-amino acids and to explore functional …
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Role and regulation of glutamate dehydrogenase activity in Bacteroides fragilis bf1
… (ammonia or peptides) and availability in the growth medium. GdhA activity was present in B. fragilis cells during growth in both ammonia-limited and ammonia-excess environments. Its activity was, however, found to be greatest in ammonia-limited cultures, and was down-regulated when peptides …
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The role of selected metal ions in the growth and physiology of wine yeasts
… The roles of magnesium and calcium in cell growth and fermentation, commercial biomass production and environmental stress were considered. Elevation of magnesium levels in the growth medium improved yeast cell viability, growth and fermentation parameters of <i>Sacch. cerevisiae</i> and …
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Proteolytic Activity of Ruminal Bacteria: Studies With Butyrivibrio Fibrisolvens (Protease, Anaerobe, Protein)
… the rate of enzyme synthesis largely paralleled growth. Protease production was not subject to induction as enzyme activity was always present regardless of the nitrogen source or carbohydrate source provided in the growth medium. Production of proteolytic activity may be subject to repression as …
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Rate zonal density gradient ultracentrifugation analysis of repair of radiation damage to the folded chromosome of Escherichia coli
… 2-3 hours of post-irradiation incubation in growth medium. A model based on recombinational repair is proposed to explain the formation of 2200-2300S material during early stages of incubation and subsequent changes in the gradient profiles. Such behavior is not observed for post-irradiation …
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