Bacillus thuringiensis

Base Information

• Chemical Name: Bacillus thuringiensis
• CAS No.: 68038-71-1
• Molecular Formula: C22H32N5O16P
• Molecular Weight: 0
• Mol file: 68038-71-1.mol

Synonyms:Agrin;Agrin (insecticide);BTB 202;Bacilex;Bacillus thuringiensis berliner;Bactospein;Bactucide;Biolep;Biotrol;Bitoksybacillin;Bitoxibacillin;Bitoxybacillin;Cajrab;Certan;DiTerra;Dipel 88;Gomelin;Guardjet;Guardjet WP;Larvo-Bt;M-one;MVP;MVPII;Mega BT;Selectzin;Selectzin WP;Spicturin;Thuricide;Thuricide 48B;Thuringin;Toarrow CT;Toarrow CT-WP;Trident;VBC 60136;VBC 60137;VBC 60137Berinert HS;Zentari;

Chemical Property of Bacillus thuringiensis

Chemical Property:

• Appearance/Colour: powder
• Boiling Point: 100°C
• PSA: 0.00000
• Density: 09 mg/ml
• LogP: 0.00000

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Total 1 MSDS from other Authors

Useful:

• Description: Bacillus thuringiensis or Bt is a naturally occurring rod-shaped, spore-forming, aerobic, grampositive micro-organism (bacterium) that is found throughout most areas of the world. It can be found in soils and on leaves/needles and in other common environmental situations. When the bacteria produces spores, it also produces unique crystalline proteins. When eaten, these natural proteins are toxic to certain insects, but not to human beings, birds, or other animals.Bacillus thuringiensis is the most widely known and researched bacterium within this group and is differentiated from other spore-forming bacilli by the presence of a parasporal body that is formed within the sporangium during sporogenesis. The parasporal body is a high-molecular-mass protein crystal that is referred to as crystalline protein, δ-endotoxin, as well as a parasporal body. This protein moiety possesses some of the insecticidal properties of the bacterium.
• Uses: Bt has been used in spray formulations for more than 40 years, and more recently its insecticidal protein genes have been incorporated into several major crops. Due to their insecticidal activity, Cry toxins are used worldwide as bioinsecticides to control disease-vector insect and crop pest populations. One of the most successful applications of Bt has been the control of lepidopteran defoliators, which are pests of coniferous forests mainly in Canada and the United States. Bt subsp. israelensis (Bti) is highly active against larvae of disease-vector mosquitoes like Aedes aegypti (vector of dengue fever), Aedes albopictus (vector of chikungunya), Simulium damnosum (vector of onchocerciasis), and certain Anopheles species (vectors of malaria). Bti formulations (WG, water-dispersible granule; DT, ready-to-use tablet) have been evaluated by the World Health Organization Pesticide Evaluation Scheme (WHOPES) and recommended as mosquito larvicides, including their use against mosquito larvae that develop in drinking-water containers. Successful application of Bt is highly dependent on proper timing, weather conditions, and dosage of spray applications. These factors combine to determine the probability of larvae ingesting a lethal dose. Recently, the use of Cry toxins has increased dramatically following the introduction of cry genes into plants. These ‘Bt crops’ have thus far proved to be an effective control strategy, and in 2004 Bt-maize and Bt-cotton were grown on 22.4 million hectares worldwide. Such widespread use, however, has led to concerns about the effect Bt crops may have on the environment and on human health.
• Biological Functions: These early experiments showed that Bt toxins needed to be activated in the gut, and it was soon discovered that the critical factors were an alkaline environment and the presence of specific proteases, which cleaved the innocuous protoxin into its active form. Once activated by proteolysis, each toxin binds to receptors in the brush border membrane and causes pores to open, disrupting them ovement of solutes across the gut epithelium and causing the influx of water. The toxins were shown to be orally lethal to caterpillars in pure form, and the pro-toxins could be converted into active toxinsin vitro, using specific pro-teases under alkaline conditions. The requirement for alkaline conditions, specific proteases and specific receptors explains why Bt is harmless to mammals (which have anacidic gut and lack the corresponding receptors) and why each toxin has a narrow host range. Nine common pests of rice, cotton and maize that are controlled by Bt crops