by Dept. of Environmental Biology, University of Guelph in Guelph, Ont .
Written in English
|Statement||by G.A. Surgeoner and M.J. Farkas.|
|Contributions||Farkas, Martha Judit, 1959-, Ontario. Aquatic Criteria Development Committee.|
|LC Classifications||QR82.B3 S87 1989|
|The Physical Object|
|Number of Pages||85|
of 87 results for "bacillus thuringiensis kurstaki" Monterey LG Bacillus Thuringiensis (B.t.) Worm & Caterpillar Killer Insecticide/Pesticide Treatment Concentrate, 32 oz out of 5 stars 1, Bacillus thuringiensis serotype kurstaki (Btk) is a group of bacteria used as biological control agents against , along with other B. thuringiensis products, is one of the most widely used biological pesticides due to its high specificity; it is effective against lepidopterans, and it has little to no effect on nontarget species. During sporulation, Btk produces a crystal Class: Bacilli. M. Nakai, L.A. Lacey, in Microbial Control of Insect and Mite Pests, Bacillus thuringiensis. Bacillus thuringiensis (Bt) is known to be one of the most effective agents to control lepidopterans and dipteran tea pests (Hazarika et al., , ).Efficacy of various commercialized Bt agents against H. magnanima, A. honmai, and A. theae (Diptera: Agromyzidae) was reported by. Review of Bacillus thuringiensis var. kurstaki (Btk) for use in forest pest management programs of Ontario - with special emphasis on the aquatic environment / By. Surgeoner, Gordon A. Farkas, Martha Judit, Ontario. Aquatic Criteria Development Committee. Type. Book Material. Published material.
Bacillus thuringiensis produces insecticidal proteins (Cry protoxins) during the sporulation phase as parasporal crystals. During intoxication, the Cry protoxins must change from insoluble crystals into membrane-inserted toxins which form ionic pores. The structural changes of Cry toxins during oligomerization and insertion into the membrane are still unknown. This original strain is now designated Bacillus thurinqiensis var. thuringiensis. The isolate Bacillus thurinqiensis var. kurstaki was first isolated in France by Kurstak in but the strain used for commercial North American production was isolated by Dulmage in from a laboratory colony of diseased pink bollworm larvae in the U.S. Monterey LG Bacillus Thuringiensis (B.t.) Worm & Caterpillar Killer Insecticide/Pesticide Treatment Concentrate, 16 oz out of 5 stars $ $ Bacillus thuringiensis was first registered as a pesticide in the U.S. in EPA issued a Registration Standard for Bacillus thuringiensis in December, (#/RS). An associated Data Call-In (DCI) required additional product analysis, toxicology, and nontarget organism data. Currently, approximately Bacillus thuringiensis.
SUMMARY The crystal proteins of Bacillus thuringiensis have been extensively studied because of their pesticidal properties and their high natural levels of production. The increasingly rapid characterization of new crystal protein genes, triggered by an effort to discover proteins with new pesticidal properties, has resulted in a variety of sequences and activities that no longer fit the. Commonly Asked Questions About Btk (Bacillus thuringiensis var. kurstaki) Jodie A. Ellis, Exotic Insects Education Coordinator Department of Entomology, Purdue University What is Bacillus thuringiensis? Bacillus thuringiensis is a rod-shaped bacterium that occurs naturally on dead or decaying matter in soil. In the present work, we evaluated the insecticidal activity of Bacillus thuringiensis (Bt) strains on Euprosterna elaeasa as an alternative for the organophosphate insecticide use in oil palm plantations in the Americas. The toxic effects of four Bt-strains (HD-1 var. kurstaki, SA var. kurstaki, ABTS var. aizawai, and GC var. aizawai) were evaluated against E. elaeasa caterpillars. Bacillus thuringiensis (Bt) is a soil bacterium that forms spores during the stationary phase of its growth cycle. The spores contain crystals, predominantly comprising one or more Cry and/or Cyt proteins (also known as δ‐endotoxins) that have potent and specific insecticidal activity.