Bacillus thuringiensis. Medical search. Frequent questions

Subspecies commonly used as insecticides include B. thuringiensis subspecies kurstaki (Btk), subspecies israelensis (Bti) and subspecies aizawai (Bta). (wikipedia.org)
During this work the fermentation of Bacillus thuringiensis var israelensis under industrial conditions was studied with respect to the development of a process for the production of a mosquitocidal insecticide elaborated by this organism. (dcu.ie)
Finally, a study of proteases produced by B. thuringiensis var israelensis was undertaken in order to determine the number,, types, and time of production of these enzymes during the growth of the organism in industrial media. (dcu.ie)
Six field experiments tested the effects of the microbial pesticide Bacillus thuringiensis israelensis ( Bti ) on pestiferous black flies (primarily the Simulium jenningsi group) as well as nontarget macroinvertebrates and fish in the Susquehanna River, Pennsylvania. (stroudcenter.org)
Bacterial control of mosquitoes and black flies : biochemistry, genetics and applications of bacillus thuringiensis israelensis and bacillus sphaericus / Huguette de Barjac, Donald J. Sutherland, editors. (who.int)
Etude du pouvoir pathogène de Bacillus thuringiensis var Israelensis sur les larves de culicidae (diptères nématocères : mise au point d'un titrage biologique / par Isabelle Larget. (who.int)
israelensis in B. thuringiensis var. (bgu.ac.il)
Mosquito Dunks contain Bacillus thuringiensis israelensis ( Bti ), a targeted larvicide from a naturally occurring bacterium that controls mosquito larvae. (arbico-organics.com)
Material & Methods: The efficacy and persistence of Bacillus thuringiensis subspecies israelensis (mosquito dunk®) as a biological control agent against mosquito larvae was conducted in Khartoum State. (bvsalud.org)

Bacillus thuringiensis (or Bt) is a gram-positive, soil-dwelling bacterium, the most commonly used biological pesticide worldwide. (wikipedia.org)
Bt (Bacillus thuringiensis), a soil-dwelling bacterium, produces proteins that are toxic to certain immature insects. (finegardening.com)
Bacillus thuringiensis is a naturally occurring soil bacterium disease that is fatal to the larva stage of certain insects. (missouribotanicalgarden.org)
Bacillus thuringiensis (Bt) is a gram-positive soil bacterium widely used in agriculture as a biological pesticide. (scielo.br)
Rice has been successfully modified to express the cry genes derived from the Bacillus thuringiensis (Bt) bacterium, and several Bt rice lines with high resistance to lepidopteran pests have been developed over the past 15 years in China [4] . (plos.org)
Bacillus thuringiensis is an endospore-forming Gram-positive bacterium of economic importance due to its capacity of synthesizing bioinsecticidal proteins. (scielo.br)
Vip3A is a group of vegetative insecticidal proteins (i.e., produced during the vegetative stage of bacterial growth) from Bacillus thuringiensis , a gram-positive bacterium commonly found in soil. (cbd.int)
Bacillus thuringiensis is a motile, rod-shaped, gram-positive bacterium that is widely distributed in nature, especially in soil and pest-rich environments. (justia.com)
Bacillus thuringiensis is a ubiquitous, gram-positive and spore-forming bacterium. (iyte.edu.tr)
Bacillus thuringiensis (Bt) is a soil-dwelling bacterium that belongs to the same genus as Bacillus anthracis (the cause of anthrax) and Bacillus cereus (a common foodborne pathogen). (thepureindianstore.com)
Toxins from the bacterium Bacillus thuringiensis var. (cdc.gov)

In most strains of B. thuringiensis, these genes are located on a plasmid (in other words cry is not a chromosomal gene in most strains). (wikipedia.org)
The result showed although all four strains could utilize naphthalene and hexadecane as only carbon source, whoever B. thuringiensis strain had shown the best efficiency in removal of both compounds. (ripi.ir)
The genetic diversity of B. thuringiensis strains shows differences according to the regions where they were isolated. (iyte.edu.tr)
Thus, each habitat may contain novel B. thuringiensis strains, which have some toxic effects on target spectra of insects. (iyte.edu.tr)
The aim of this study was to isolate B. thuringiensis strains from different environments and to identify the crystalline protein gene content of the isolates. (iyte.edu.tr)
Polymerase Chain Reaction (PCR) method was used for the characterization of cry gene content of B. thuringiensis strains. (iyte.edu.tr)
The universal primers specific to cry 1, cry2, cry 3, and cry 9 genes were used to detect the type of cry gene carried by each environmental isolate of B. thuringiensis strains. (iyte.edu.tr)
In addition, 16S rRNA based PCR-restriction fragment length polymorphism (RFLP) was carried out to confirm B. thuringiensis strains. (iyte.edu.tr)
Since B. thuringiensis strains have great genetic diversity, the toxic behaviours of these strains differ from region to region. (iyte.edu.tr)
Native B. thuringiensis strains are isolated from different habitats and characterized to determine their toxic potential all over the world. (iyte.edu.tr)
The aim of this study was to isolate B. thuringiensis strains from different grain habitats in Central Anatolia and Aegean Regions, and to investigate their phenotypic and genotypic characterizations. (iyte.edu.tr)
Finally, chromosomal DNA profiling by PFGE showed different DNA patterns for isolates containing the same cry gene which suggest a high level of diversity among the B. thuringiensis strains isolated. (iyte.edu.tr)
Further studies related with extensive genetic characterization and toxic activity of each B. thuringiensis strain will give more comprehensive results on biodiversity of B. thuringiensis strains in Anatolia. (iyte.edu.tr)
Applications of single ( tenebrionis 4AA1 and kurstaki HD73 carrying pBMB76 and pHT73, respectively) and mixed (4AA1 + HD73) B. thuringiensis strains were performed in confined plot habitats (soil and leaf) over two planting seasons. (biomedcentral.com)
abstract = "Seventy strains of Bacillus thuringiensis representing 21 serovars were allocated to 38 genomic groups using pulsed field gel electrophoresis (PFGE) of restriction enzyme-digested DNA. (hw.ac.uk)
While independently derived strains of B. anthracis reveal conspicuous sequence homogeneity, environmental isolates of B. cereus and B. thuringiensis exhibit extensive genetic diversity. (nau.edu)
These two strains, when analyzed by amplified fragment length polymorphism within a collection of over 300 of A. cereus, B. thuringiensis, and B. anthracis isolates, appear closely related to B. anthracis. (nau.edu)
Whole-genome sequencing of B. thuringiensis 97-27 and B. cereus E33L was undertaken to identify shared and unique genes among these isolates in comparison to the genomes of pathogenic strains B. anthracis Ames and B. cereus G9241 and nonpathogenic strains B. cereus ATCC 10987 and B. cereus ATCC 14579. (nau.edu)

or as six species in a Bacillus cereus sensu lato: B. weihenstephanensis, B. mycoides, B. pseudomycoides, B. cereus, B. thuringiensis, and B. anthracis. (wikipedia.org)
Lurzoruan bizi da, beste Bacillus batzuen antzera ( Bacillus cereus , Bacillus anthracis . (wikipedia.org)
However, the distinction of notable group members, e.g., entomopathogenic B. thuringiensis , opportunistic B. cereus , and bioterrorism agent B. anthracis , still follows conventional insecticidal or pathogenic criteria. (biomedcentral.com)
Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis are closely related gram-positive, spore-forming bacteria of the B. cereus sensu lato group. (nau.edu)

1979). "Purification of the insecticidal toxin from the parasporal crystal of Bacillus thuringiensis subsp. (wikipedia.org)
Secondary structure of the entomocidal toxin from Bacillus thuringiensis subsp. (wikipedia.org)
Rice lines genetically modified with the crystal toxin genes from Bacillus thuringiensis (Bt) have experienced rapid development, with biosafety certificates for two Bt rice lines issued in 2009. (plos.org)
Whether it's mosquito larvae, caterpillars, beetles, or flies, Bacillus thuringiensis has a unique toxin to deal with them effectively. (pestsyard.com)
Characteristics of resistance to Bacillus thuringiensis toxin Cry 2Ab in a strain of Helicoverpa punctigera (Lepideptera : Noctuidae) isolated from a field population. (arccjournals.com)
The first generation of transgenic cotton with B. thuringiensis produces a single toxin, Cry1Ac, that is highly effective against susceptible larvae of pink bollworm (Pectinophora gossypiella), a major cotton pest. (arizona.edu)
To counter potential problems with resistance, second-generation transgenic cotton that produces B. thuringiensis toxin Cry2Ab alone or in combination with Cry1Ac has been developed. (arizona.edu)

The microbial insecticide Bacillus thuringiensis (Bt) produces Cry toxins, proteins that bind to the brush border membranes of gut epithelial cells of insects that ingest it, disrupting the integrity of the membranes, and leading to cell lysis and insect death. (unboundmedicine.com)
Steinigeweg C, Alkassab AT, Erler S, Beims H, Wirtz IP, Richter D, Pistorius J (2022) Impact of a microbial pest control product containing Bacillus thuringiensis on brood development and gut microbiota of Apis mellifera worker honey bees. (coloss.org)
Microbial pest control agent : Bacillus thuringiensis. (who.int)
Evaluation of occupational and general public exposure to Bacillus- thuringiensis (Bt) during application of this microbial agent for control of the gypsy-moth was requested by the Oregon State Department of Human Resources, Health Division (SIC-0851), located in Portland. (cdc.gov)

In 1976, Robert A. Zakharyan reported the presence of a plasmid in a strain of B. thuringiensis and suggested the plasmid's involvement in endospore and crystal formation. (wikipedia.org)
Vip3Aa20 is a mutated form of the vip3Aa19 gene from the Bacillus thuringiensis strain AB88. (cbd.int)
SDS-PAGE studies for Cry 9 proteins of the isolates exhibited different protein profile from positive control of B thuringiensis strain. (iyte.edu.tr)
Complete genome sequence of Bacillus thuringiensis serovar tolworthi strain Pasteur Institute Standard. (pacb.com)

The weight of the tomatoes after the harvest scored the highly significance weight reached to 4916 42.50, 4131 34.33, 3123 41.28, Kg/ feddan in the area treated with Bacillus thuringiensis Diple (2X), B. t kurstaki HD-73, and B. t kurstaki HD-234, respectively as compares to 2631 36.80Kg/fesddan in the control in EL-Esraa farm (Nobaryia) during season 2013. (researchbib.com)

The delta-endotoxin gene of Bacillus thuringiensis subsp. (justia.com)
found significant differences in the expression of the cryIIA and cryIIA delta-endotoxin genes of Bacillus thuingiensis subsp. (justia.com)
A study of the delta-endotoxin of Bacillus thuringiensis var. (who.int)
Review of Experimental Use Permit Application for Corn Expressing delta-endotoxin from Bacillus thuringiensis var. (epa.gov)

Characterized full-length and truncated plasmid clones of the crystal protein of Bacillus thuringiensis subsp. (wikipedia.org)
The aim of this study was to establish whether this protein is involved in the D -alanylation process in Bacillus thuringiensis . (frontiersin.org)
The present paper describes important features of the immune response induced by the Cry1Ac protein from Bacillus thuringiensis in mice. (scielo.br)
The Bacillus thunringiensis multiplies by spores, and when it does forms crystals popularly known as protein crystals that have insecticidal action against beetles, nematodes, bed bugs, flies and mosquitoes and lepidopteran larvae. (diygardens.org)
Finally, SDS-PAGE analysis was optimized to detect protein profiles of crystal proteins obtained from B. thuringiensis isolates. (iyte.edu.tr)
Gaviria Rivera, AM & Priest, FG 2003, ' Pulsed field gel electrophoresis of chromosomal DNA reveals a clonal population structure to Bacillus thuringiensis that relates in general to crystal protein gene content ', FEMS Microbiology Letters , vol. 223, no. 1, pp. 61-66. (hw.ac.uk)
Vip3A, a novel Bacillus thuringiensis vegetative insecticidal protein with a wide spectrum of activities against lepidopteran insects. (arccjournals.com)

The objective of this work was to identify and characterize cry3, vip1, vip2 and vip1/vip2 genes in a collection of 1,078 Bacillus thuringiensis isolates potentially toxic against Coleoptera larvae. (unesp.br)
In this study, four bacterial isolates ( Arthrobacter citreus , Staphylococcus gallinarum , Bacillus thuringiensis , Paenarthrobacter nitroguajacolicus ), which was previously isolated from petroleum-contaminated soils of Naft-Shahr, were used for bioremediation of naphthalene and hexadecane. (ripi.ir)
It was found that, 136 of 359 isolates showed B. thuringiensis-like colony morphology and subterminal endospore position. (iyte.edu.tr)
16S rRNA based PCR-RFLPfor 18 isolates gave the same restriction pattern as positive controls, indicating that all 18 isolates were B. thuringiensis. (iyte.edu.tr)
Results showed that the percentage of isolates with plasmid mobility was markedly enhanced in the B. thuringiensis -sprayed groups. (biomedcentral.com)

There are several dozen recognized subspecies of B. thuringiensis. (wikipedia.org)

The proteins that B. thuringiensis is most known for are encoded by cry genes. (wikipedia.org)
The screening of Bacillus thuringiensis (Bt) Cry proteins with high potential to control insect pests has been the goal of numerous research groups. (scielo.br)
Bacillus thuringiensis , Cry proteins, Insects. (scielo.br)
The secret behind the effectiveness of Bacillus thuringiensis lies in the mode of action of these crystal proteins. (pestsyard.com)
Bacillus thuringiensis is a Gram positive, facultative anaerob bacteria that produces proteins toxic against different insect species. (iyte.edu.tr)

aizawai (Bt_A_1) and B. thuringiensis var. (irta.cat)

Li G, Wang Y, Liu B, Zhang G (2014) Transgenic Bacillus thuringiensis (Bt) Rice Is Safer to Aquatic Ecosystems than Its Non-Transgenic Counterpart. (plos.org)
Diamond back moth resistance to Bacillus thuringiensis transgenic canola : evaluation of refugia size with non-recessive resistant insects. (arccjournals.com)
Field-evolved resistance by western corn rootworm to multiple Bacillus thuringiensis toxins in transgenic maize [Gassmann, A., et al. (beyondpesticides.org)
Endotoxins produced by BACILLUS THURINGIENSIS used in transgenic plants and insecticides. (bvsalud.org)

Resistance to the Bacillus thuringiensis bio- insecticide in a field population of Plutella xylostella is due to a change in midgut membrane receptor. (arccjournals.com)

Effect of two commercial formulations of _Bacillus thuringiensis_subsp.kurstaki (Dipel 8L and Dipel 8AF) on the collembolan species Folsomia candida in a soil microcosm study. (gc.ca)

Carcasses of mosquito larvae killed by Bacillus thuringiensis var. (bgu.ac.il)

Three vip3 genes were identified in two Bacillus thuringiensis Spanish collections. (bath.ac.uk)
Amplification of cry genes has been achieved in Bacillus subtilis. (justia.com)
O objetivo deste trabalho foi identificar e caracterizar os genes cry3, vip1, vip2 e vip1/vip2 em uma coleção de 1.078 isolados de Bacillus thuringiensis potencialmente tóxicos para larvas de coleópteros. (unesp.br)

The most widely used biopesticide is Bacillus thuringiensis. (justia.com)
If you are looking for a natural and safe way to control pests in your crops, garden, or home, you might have heard of Bacillus thuringiensis (Bt) biopesticide. (thepureindianstore.com)
How does Bacillus thuringiensis work as a biopesticide? (thepureindianstore.com)
What are the benefits of using Bacillus thuringiensis as a biopesticide? (thepureindianstore.com)

Effect of two commercial formulations of Bacillus thuringiensis subsp. (gc.ca)
To find a sustainable alternative to control S. impressella, we assessed the biological activities of five commercial formulations of Bacillus thuringiensis. (irta.cat)
These findings show that commercial formulations of B. thuringiensis subsp. (irta.cat)

During sporulation, Bacillus thuringiensis produces a parasporal crystal inclusion(s) which is toxic upon ingestion to susceptible larvaea. (justia.com)

What sets Bacillus thuringiensis apart from conventional insecticides is its unique properties and highly targeted approach. (pestsyard.com)
Bacillus thuringiensis, commonly known as Bt, a most promising alternative to synthetic insecticides, has been used as an effective bio-pesticide in agriculture since long time. (arccjournals.com)
Crops genetically engineered to produce Bacillus thuringiensis toxins for insect control can reduce use of conventional insecticides, but insect resistance could limit the success of this technology. (arizona.edu)

Negative staining image of Bacillus thuringiensis, which produces spores and crystals in times of stress. (ucsd.edu)

Evaluation of a new Futura formulation of Bacillus thuringiensis on populations of jack pine budworm, Choristoneura pinus pinus (Lepidoptera: Tortricidae. (gc.ca)
Long term selection for resistance to Bacillus thuringiensis Cry 1 Ac endotoxin in a Minnosota population of European corn borer (Lepidoptera : Crambidae). (arccjournals.com)

Bacillus thuringiensis bacteria share similar genetic, physiological, and biochemical characteristics with other members of the Bacillus cereus group. (biomedcentral.com)

169:4110-4118) and Bacillus subtilis (Shivakumar et al. (justia.com)
kurstaki HD73 has been cloned into Bacillus subtilis using an integrative plasmid and amplified (Calogero et al. (justia.com)
kurstaki in Bacillus subtilis and Bacillus megaterium. (justia.com)
The cryIA gene was expressed when present on a multicopy vector in Bacillus megaterium, but not in Bacillus subtilis. (justia.com)
Bacillus subtilis subsp. (lbl.gov)

It was shown that high levels of intracellular polyphosphate stimulated endotoxin production by Bacillus thuringiensis subsp. (tubitak.gov.tr)
Development and mechanisms of resistance to Bacillus thuringiensis endotoxin Cry 1Ac in the American Bollworm, Helicoverpa armigera (Hubner). (arccjournals.com)

Therefore, DltX plays a direct role in the resistance to CAMPs, thus contributing to the survival of B. thuringiensis in insects. (frontiersin.org)
However, with the emergence of Bacillus thuringiensis as an eco-friendly alternative, we now have a promising solution that not only targets specific insect pests but also ensures the safety of non-target organisms, including humans, pets, and beneficial insects. (pestsyard.com)

Bacillus thuringiensis : Natural and Recombinant bioinsecticide products. (arccjournals.com)

If these plasmids are lost it becomes indistinguishable from B. cereus as B. thuringiensis has no other species characteristics. (wikipedia.org)
However, disruption of dltX drastically impaired the resistance of B. thuringiensis to CAMPs and significantly attenuated its virulence in two insect species. (frontiersin.org)

We first identified pBMB76 from B. thuringiensis tenebrionis as a new conjugative plasmid. (biomedcentral.com)
These data suggest a clonal population structure to B. thuringiensis with some consistency of Cry-plasmid composition within PFGE types. (hw.ac.uk)

Hainbat intsekturen parasitoa denez, Bacillus thuringiensis eta bere toxina asko erabili da nekazaritzan biointsektizida moduan, intsektuen izurritei aurre egiteko. (wikipedia.org)

This study aimed to evaluate the biosafety of a MPCP with the active organism Bacillus thuringiensis ssp. (coloss.org)

However, the effects of wide-spread application of B. thuringiensis -based pesticides on genetically related B. cereus group populations present in the environment remain poorly understood. (biomedcentral.com)
This raises the question of whether the application of B. thuringiensis -based pesticides with conjugal and mobilizing elements can promote gene flow within B. cereus group populations and enhance MGE dominance, and thus affect community composition in the treated area, especially confined habitats. (biomedcentral.com)

در این پژوهش، چهار سویه باکتریایی ( Arthrobacter citreus ، Staphylococcus gallinarum ، Bacillus thuringiensis و Paenarthrobacter nitroguajacolicus ) که پیش‌تر از خاک‌های آلوده به ترکیبات نفتی در منطقه نفت‌شهر جداسازی شده بودند، برای حذف زیستی نفتالین و هگزادکان بکار گرفته شدند. (ripi.ir)

But there is always a but) there is a risk that the insect will generate resistance to the product and, therefore, that Bacillus thuriengensis stops having the desired effect and, therefore, we have to exceed the recommended dose, something that should not be done. (diygardens.org)

The bioassay results showed that Bt thuringiensis 4412 and Bt entomocidus 60.5 were the most toxic for the lepidopterans, with a 93% and 82% mortality rate for S. frugiperda and D. saccharalis, respectively. (scielo.br)

Laboratory and field evaluations on the efficacy of Bacillus thuringiensis H-14 for the control of Mansonia and other vector mosquitoes (Diptera: culicidae), including some comparative studies with Bacillus sphaericus / by Annie Foo Eng Sim. (who.int)
EVALUATIONS OF Bacillus thuringiensis subsp. (who.int)

B. sotto would later be reassigned as B. thuringiensis var. (wikipedia.org)

Propagation of HrcA regulog to Bacillus thuringiensis str. (lbl.gov)

The invention relates to a method for producing an integrant(s) of Bacillus thuringiensis. (justia.com)

B. thuringiensis also occurs naturally in the gut of caterpillars of various types of moths and butterflies, as well on leaf surfaces, aquatic environments, animal feces, insect-rich environments, and flour mills and grain-storage facilities. (wikipedia.org)

This research was carried out to verify the feaeibility of leguminous seeds and agroindustrial by products as component of media used for the obtention of apores and crystals of Bacillus thuringiensis Berliner var. (usp.br)

Anatomy4

Organisms29

Diseases2

Chemicals and Drugs16

Analytical, Diagnostic and Therapeutic Techniques and Equipment9

Phenomena and Processes14

Disciplines and Occupations2

Technology, Industry, Agriculture3

Information Science3

Health Care4

Israelensis9

Bacterium11

Strains18

Anthracis4

Toxin7

Microbial4

Strain4

Kurstaki HD-731

Delta-endotoxin4

Protein7

Isolates5

Subspecies1

Proteins5

Aizawai1

Transgenic4

Insecticide1

Subsp.kurstaki1

Larvae1

Genes3

Biopesticide4

Formulations3

Parasporal crystal1

Insecticides3

Spores1

Lepidoptera2

Bacteria1

Subtilis5

Endotoxin2

Insects2

Bioinsecticide1

Species2

Plasmid2

Toxina1

Organism1

Pesticides2

Staphylococcus1

Resistance1

Toxic1

Evaluations2

Sotto1

Propagation1

Relates1

Caterpillars1

Crystals1