Bacillus thuringiensis
Bacterium
Insect Resistance To Bt Crops Can Be Predicted, Monitored, And Managed...insects mating with non-resistant ones, resulting in non-resistant offspring. Crops that are "pyramided" to incorporate two or more Bt toxins are more effective at controlling insect resistance when they are used independently from crops... In this article: Bacillus thuringiensis, Vinegar, Medical advice, Insecticide, Toxin, and Japan |
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New Kerala | 6 days ago
Insect resistance to Bt crops can be predicted, monitored, and managed
In this article: Bt toxins, Toxin, and Washington
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New Kerala | 7 days ago
TNAU developes 4 varities of Bt brinjal: Scientist
Stating that biotechnology offered great scope for enhancing yield and quality of the agricultural produce, the Scientist said when Bt cotton was allowed for commercial cultivation in 2002, several NGOs opposed the technology and the...
In this article: Bt cotton, India, Climate change, and Tamil Nadu Agricultural University
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San Francisco Chronicle | November 22, 2009
Noctuid moth likely culprit plaguing vegetable
...the eggs, or, if you have many affected plants, spraying them with Bt, a microbial pesticide. It's based on the bacterium Bacillus thuringiensis, variety kurstaki. Since it works best when the caterpillars are very small, start spraying a...
In this article: Culprit, Pesticide, Spinosad, Phosphate, and Northern California
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The Australian | November 16, 2009
Monsanto Pulls GM Corn Amid Food Safety Concerns
...withdrawn a GM product (or two products) at the eleventh hour. It was insane in the first place to seek to pass GM maize crops containing Bt toxins and "growth enhancers" straight into the human food chain (13). In addition, EFSA and the...
In this article: Monsanto, EFSA, Maize, Toxin, Kevin Rudd, Bt toxins, Cancer, and Allergy
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San Francisco Chronicle | November 08, 2009
Reviving blueberry bush attacked by apple moth
...I learned that it is the light brown apple moth (or LBAM, as they called it). I am now controlling further damage with Bt (Bacillus thuringiensis). I don't know how to treat my 7-year-old blueberries, which were severely damaged by this...
In this article: Blueberry, San Francisco, Biological pesticide, Nitrogen, and Ammonium
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Des Moines Register | November 05, 2009
More seen flouting biotech corn seed limits
...agreements farmers sign when they buy the seed. The requirements are intended to ensure that when insects develop resistance to the Bt toxin, there are nonresistant insects around that they can mate with, preventing the resistance from being...
In this article: EPA, Bt cotton, Toxin, Insecticide, Environmental Protection Agency, and Monsanto Co.
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Reason Magazine - All Reason Articles from the Past Year: Page 1 | October 29, 2009
CSI Miami Science Fiction -- FrankenFood Disinformation
...by Syngenta, Attribute sweet corn contains an added gene that kills some insects that try to eat it. The gene comes from bacillus thuringiensis. Please note that b.t. is also extensively used by organic farmes to control pests. The chief...
In this article: CSI, John Mackey, Technophobia, Corn on the cob, Botulism, Botulinum toxin, Jerry Mackey, Michael Crichton, and USDA
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New Kerala | October 20, 2009
BT brinjal technology is safe, says Dr. Gosal of Punjab Agriculture University
...launched in India, which has so far permitted commercial cultivation of only one genetically engineered crop -- bacillus thuringiensis or Bt cotton. Bt brinjal is a transgenic vegetable, which carries a gene called ''Bt'' from a bacterium,...
In this article: Insecticide, Toxin, and Punjab Agricultural University
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New Kerala | October 13, 2009
Cotton producers await rain; fear yield may fall
...this could be the lowest output in the past four years,'' Sardarbhai Patel of Raghuvir Gining mill said. After the introduction of Bt cotton, Gujarat has witnessed a continuous rise in production, with the last year being an...
In this article: Maharashtra, Punjab, Bt cotton, Mumbai, and India
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Times of India | August 27, 2009
Life is cheap in Gujarat's Bt cotton fields
...Punjilal Ahuri received the body of his 16-year-old daughter, Haju Ben. She had apparently died of snake bite while working in the Bt cotton fields of Gujarat. That was the first time Punjilal got to know where his missing daughter had...
In this article: Bt cotton, Dungarpur, Coercion, and Deodhar
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More on Bacillus thuringiensis
Description from Wikipedia:
Bacillus thuringiensis is a Gram-positive, soil dwelling bacterium of the genus Bacillus. Additionally, B. thuringiensis also occurs naturally in the gut of caterpillars of various types of moths and butterflies, as well as on the dark surface of plants.
B. thuringiensis was discovered 1901 in Japan by Ishiwata and 1911 in Germany by Ernst Berliner, who discovered a disease called Schlaffsucht in flour moth caterpillars. B. thuringiensis is closely related to B. cereus, a soil bacterium, and B. anthracis, the cause of anthrax: the three organisms differ mainly in their plasmids. Like other members of the genus, all three are aerobes capable of producing endospores.
Upon sporulation, B. thuringiensis forms crystals of proteinaceous insecticidal δ-endotoxins (Cry toxins: Bacillus thuringiensis Toxin Nomenclature) which are encoded by cry genes. Cry toxins have specific activities against species of the orders Lepidoptera (Moths and Butterflies), Diptera (Flies and Mosquitoes) and Coleoptera (Beetles). Thus, B. thuringiensis serves as an important reservoir of Cry toxins and cry genes for production of biological insecticides and insect-resistant genetically modified crops.
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