- Bacillus thuringiensis (or Bt) is a
Gram-positive, soil-dwelling bacterium, commonly used as a biological
alternative to a pesticide; alternatively, the
Cry toxin may be extracted and used as a pesticide.
- B. thuringiensis was first discovered
in 1902 by Japanese biologist Shigetane Ishiwatari. In 1911, B.
thuringiensis was rediscovered in Germany by
Ernst Berliner, who isolated it as the cause of a disease called
Schlaffsucht in flour moth caterpillars.
- Bacillus thuringiensis (B.t.) is a
naturally-occurring soil bacterium that produces poisons which cause
disease in insects.
- Bt toxins are considered
environmentally friendly by many farmers[who?] and may be a potential
alternative to broad spectrum insecticides.Large-scale applications of B.t. can have far reaching ecological
- Bacillus thuringiensis products
available in the United States are comprised of one of five varieties of
- Each of the more than 800 strains of
Bacillus thuringiensis may exhibit different toxicity to insects,
rodents and humans.
An aeration strategy was proposed for foam control in an airlift reactor
with double wire mesh draft tubes. The airlift reactor was employed in
cultivation of Bacillus thuringiensis for thuringiensin production.
- A two-step procedure was used to
place a cryIC crystal protein gene from Bacillus thuringiensis subsp.
aizawai into the chromosomes of two B.
thuringiensis subsp. kurstaki strains containing multiple crystal
- The production of the bioinsecticide
can be done using the aerobic cultivation.
- The preparations of spores and
crystals of Bacillus thuringiensis have been used for about 60 years for
the control of insects harmful to the cultivated plants and forests and,
also, for the control of insect vectors of diseases.
- The local production of Bt
biopesticides using strains isolated in the Laboratory and showing
originalities, for the development of local biopesticides
industries and biofarming promotion.
- Detailed techno-economic analysis of
alternative growth substrates, namely, raw wastewater sludge; hydrolyzed
wastewater sludge; starch industry wastewater for Bacillus thuringiensis
var. kurstaki HD-1 (Bt) biopesticides production in comparison with
semi-synthetic commercial soyameal medium was carried out.
- To develop a cost-effective process
for the production of Bacillus thuringiensis based insecticide, it is
important to cultivate the bacterial strain in rich medium to obtain the
highest yields of spore-crystal complexes.
- We optimized the PCR method to detect
genetically engineered Bacillus thuringiensis (Bt) maize in open
quarantine fields in Kenya.
- In the Effects of Protoplast Fusion
on δ-endotoxin Production in Bacillus
thuringiensis Spp. (H14) mutant forms of Bacillus thuringiensis spp.
israelensis (H14) were produced.
- Three Bacillus thuringiensis isolates
designated 1M, K10-2 and V24-M with varying levels of toxicity to Chilo
partellus (spotted stalk borer) were characterized to establish the
basis for the differential
toxicity and to identify any unique properties that may be used to
screen other isolates.
- Transgenic technology, involving a
wide range of pesticidal genes from the bacterium
Bacillus thuringinesis (Bt),
dominates the scenario of agricultural biotechnology. At the same
time, Bt technology is also the most
focused target of vehement anti-tech activism.
- The development of the production and
use of Bacillus thuringiensis in Brazil at a commercial scale faces
certain difficulties, among them the establishment of efficient
methodologies for the quantitation of toxic
products to be commercialized.
- The recently sequenced 218 kb genome
of morphologically atypical Bacillus thuringiensis phage 0305φ8-36
exhibited only limited detectable homology to known
bacteriophages. The only known relative of this phage is a string of
phage-like genes called BtI1 in the chromosome of B. thuringiensis
Entrepreneur who wants the
information on "
Process , Technology,
Applications, Patent, Consultants, Research Universities, Reports,
Projects " can