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Showing 1 to 16 of 16 for “"Bacillus sphaericus"”.
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Sporulation and toxin formation in Bacillus sphaericus 1593
… and mosquito larval toxin formation by B. sphaericus 1593, were investigated in shaken flasks and a fermenter. The bacteria grew well at temperatures of 25 to 40°C, however, toxin-formation and sporulation were poor at temperatures above 30°C. Cell lysis became evident after about 30 hours …
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Random amplified polymorphic DNA (RAPD) analysis of Bacillus sphaericus
Mosquito pathogenic strains of Bacillus sphaericus are indistinguishable from nonpathogenic strains based on simple phenotypic tests. DNA-DNA hybridizations performed in 1980 placed the 7 pathogens included in that study in a distinct homology group separate from 5 groups of nonpathogens. The …
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Factors preventing the metabolism of carbohydrates by Bacillus sphaericus 2362
Bacillus sphaericus 2362 is a mosquito pathogenic bacterium. Its greatest industrial potential may be in developing countries where mosquitos are often vectors for diseases. This strain is typical of the species in that it is unable to grow using carbohydrates as a sole source of carbon. The goal …
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Plasmid stability of pUB110 and pUB110-derived plasmids in Bacillus sphaericus 2362
Bacillus sphaericus 2362 is highly pathogenic to the larvae of mosquitos. The potential of this bacterium as a biological control agent could be improved by the availability of a stable cloning vector. Such a vector would allow the incorporation of traits into B. sphaericus which could benefit its …
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Molecular Systematics of the Entomopathogenic Bacteria Bacillus popilliae, Bacillus lentimorbus, and Bacillus sphaericus
Bacillus popilliae and B. lentimorbus, causative agents of milky disease in Japanese beetles and related scarab larvae, have been differentiated based upon a small number of phenotypic characteristics, but they have not previously been examined at the molecular level. Thirty-four isolates of these …
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Potential of the mosquito pathogen Bacillus sphaericus for recycling and gene transfer in larval cadavers
… in the larval habitat. The ability of Bacillus sphaericus to recycle has only been examined in the low toxicity strain SSII-1 and in the two highly toxic strains 2362 and 1593, both belonging to serotype 5a5ab. This study was expanded and the ability to germinate and recycle of several …
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Effect of carbon source on growth, sporulation, and development of mosquito toxicity by Bacillus sphaericus
… that would be useful for the classification of Bacillus sphaericus, a heterogenous bacterial species, 2) to determine nutritional characteristics that would assist in the design of a selective medium for the mosquito pathogenic strains of B. sphaericus and 3) to determine the effect of carbon …
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Avaliação de técnicas de separação fluido-sólido na produção de bioinseticidas a partir de Bacillus sphaericus e Bacillus thuringiensis var. israelensis
… for production of bioactive concentrates os Bacillus thuringiensis var. israelensis and Bacillus sphaericus. Both are used as biological control agents to control larval insects related to endemic diseases such as yellow fever, filariasis and malaria. The fermented broths were produced batch …
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Effects of bacillus thuringiensis var.Israelensis and Bacillus Sphaericus larvicides,on mosquitoe Abundance, Diversity and Distribution in Selected Areas of lusaka urban district,Zambia
Effects of Bacillus thuringiensis var. israelensis (Bti) and Bacillus sphaericus (Bs) biolarvicides, on mosquito abundance, diversity and distribution in selected areas of Lusaka urban district, Zambia, were investigated. Four study areas including parts of the dam/stream systems of the …
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Effects of bacillus thuringiensis var.Israelensis and Bacillus Sphaericus larvicides,on mosquitoe Abundance, Diversity and Distribution in Selected Areas of lusaka urban district,Zambia
Effects of Bacillus thuringiensis var. israelensis (Bti) and Bacillus sphaericus (Bs) biolarvicides, on mosquito abundance, diversity and distribution in selected areas of Lusaka urban district, Zambia, were investigated. Four study areas including parts of the dam/stream systems of the …
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Strukturelle und mechanistische Arbeiten an Triterpen-Cyclasen aus Alicyclobacillus acidocaldarius und Arabidopsis thaliana sowie Kristallstrukturen der katalytischen Fragmente von AB-Toxinen aus Clostridium difficile und Bacillus sphaericus
… der Squalen-Hopen-Cyclase aus Alicyclobacillus acidocaldarius (baSHC) im Komplex mit dem Substratanalogon 2,3-Dihydro-2-azasqualen gelöst werden. Die bei einer Auflösungsgrenze von 2.1 Å ermittelte Kristallstruktur zeigte den Bindungsmodus des Inhibitors im Detail und erlaubte aufgrund …
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Reguläre bakterielle Zellhüllenproteine als biomolekulares Templat
… The binding of metal complexes to S-layers of Bacillus sphaericus and Sporosarcina ureae and their subsequent reduction leads to the formation of regularly arranged platinum or palladium cluster arrays on the biomolecular template. A heterogeneous nucleation mechanism is proposed for this …
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Strukturelle und funktionelle Untersuchungen an bakteriellen Biokomponenten für schwermetallbindende silikatische Sol-Gel-Keramiken
… vegetativen Zellen und Sporen von Bacillus sphaericus JG-A12 wurden im Rahmen der vorliegenden Arbeit Zusammenhänge zwischen Gefügeausbildung und Funktionalität, besonders unter dem Gesichtspunkt metallbindender Eigenschaften, untersucht. Mit Hilfe von Fluoreszenzfarbstoffen konnte …
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Sustainable bacteria-based self-healing fiber reinforced concrete
… at different ages has been investigated. Bacillus Sphaericus (B. Sphaericus) was incorporated into the concrete at concentrations of 2 x 109 (CFU/ml), and different bacterial percentages selected utilizing calcium lactate as a nutrient source. Bacterial content of 0.0 percent, 0.25 …
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Development of techniques for the recovery and enumeration of two mosquito pathogens
… the selective recovery of the mosquito pathogens Bacillus sphaericus 1593 and B. thuringiensis serovar. israelensis were developed. Streptomycin at 100 µg/ml and 500 µg/ml in NY agar (nutrient agar with 0.05% yeast extract) successfully selected for B. sphaericus, and allowed counts equivalent to …