Littérature scientifique sur le sujet « Bacillus thuriengiensis »
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Articles de revues sur le sujet "Bacillus thuriengiensis"
Patel, S., V. K. Garg et S. Balpande. « Evaluation the efficacy of bio pesticides against gram pod borer Helicoverpa armigera (Hubner) on chickpea (Cicer arietinum L.) ». INTERNATIONAL JOURNAL OF PLANT SCIENCES 18, no 1 (15 janvier 2023) : 40–44. http://dx.doi.org/10.15740/has/ijps/18.1/40-44.
Texte intégralArcher, T. L., Carl Patrick, Greta Schuster, Greg Cronholm, E. D. Bynum Jr et W. P. Morrison. « Ear and shank damage by corn borers and corn earworms to four events of Bacillus thuriengiensis transgenic maize ». Crop Protection 20, no 2 (mars 2001) : 139–44. http://dx.doi.org/10.1016/s0261-2194(00)00066-1.
Texte intégralAbd El-Aty, Heba,, et Ghada, Ramadan. « The First Field Evaluation of Bacillus thuriengiensis Bt407 against Cassida vittata and Its Natural Enemies In Egyptian Sugar Beet Fields. » Egyptian Academic Journal of Biological Sciences, F. Toxicology & ; Pest Control 15, no 1 (21 février 2023) : 87–96. http://dx.doi.org/10.21608/eajbsf.2023.292119.
Texte intégralChatterjee, Hirak. « INFLUENCE OF MOISTURE ON THE TOXICITY OF SOME BIOPESTICIDES ON BOMBYX MORI L. » Journal of Biopesticides 2, no 1 (1 juin 2009) : 11–14. http://dx.doi.org/10.57182/jbiopestic.2.1.11-14.
Texte intégralReisig, Dominic D., Chris DiFonzo, Galen Dively, Yasmine Farhan, Jeff Gore et Jocelyn Smith. « Best Management Practices to Delay the Evolution of Bt Resistance in Lepidopteran Pests Without High Susceptibility to Bt Toxins in North America ». Journal of Economic Entomology 115, no 1 (18 décembre 2021) : 10–25. http://dx.doi.org/10.1093/jee/toab247.
Texte intégralStrazanac, John S., Christine D. Plaugher, Toby R. Petrice et Linda Butler. « New Tachinidae (Diptera) Host Records of Eastern North American Forest Canopy Lepidoptera : Baseline Data in a Bacillus thuriengiensis Variety kurstaki Nontarget Study ». Journal of Economic Entomology 94, no 5 (1 octobre 2001) : 1128–34. http://dx.doi.org/10.1603/0022-0493-94.5.1128.
Texte intégralBhattarai, A. M., et S. Tiwari. « Effects of Different Bio-Rational Compounds on Mortality of Diamond Back Moth (Plutella xylostella L.) Larva under Laboratory Condition ». Journal of Agriculture and Environment 22 (30 juin 2021) : 31–40. http://dx.doi.org/10.3126/aej.v22i0.46783.
Texte intégralCheflawi, Roaa Rafie, Ali Abdulhuisen Kareem et Abdulzahra Jabar Ali. « Effect of some integrated control factors on controlling different stages of whitefly Bemisia tabaci (Aleyrodidae : Hemiptera) under laboratory conditions ». Journal of Kerbala for Agricultural Sciences 10, no 2 (18 juin 2023) : 101–13. http://dx.doi.org/10.59658/jkas.v10i2.1193.
Texte intégralHoltz, Brent A. « Plant Protection for Pistachio ». HortTechnology 12, no 4 (janvier 2002) : 626–32. http://dx.doi.org/10.21273/horttech.12.4.626.
Texte intégralSaad, Mahmoud S. I., Enas M. Y. Elyamani et Walaa M. M. Helaly. « Controlling of bacterial and fungal diseases that contaminating mulberry silkworm, Bombyx mori by using some plant extracts ». Bulletin of the National Research Centre 43, no 1 (décembre 2019). http://dx.doi.org/10.1186/s42269-019-0218-3.
Texte intégralThèses sur le sujet "Bacillus thuriengiensis"
Hachfi, Salma. « Destin et comportement des spores du groupe Bacillus cereus chez des organismes modèles ». Electronic Thesis or Diss., Université Côte d'Azur, 2022. http://theses.univ-cotedazur.fr/2022COAZ6003.
Texte intégralThe Bacillus Cereus (B cereus) group consists of Gram-positive bacteria, commonly isolated from the environment. Members of the B. cereus group are spore-forming bacteria commonly associated with food poisoning and intestinal infections and represent the third cause of food poisoning in Europe and the second in France. The most-studied members of this group are B. anthracis, B. cereus sensu stricto (Bc), and B. thuringiensis (Bt) that are well known for their pathogenic activity. Bt is characterized by the production, during its sporulation, of a crystal containing insecticidal Cry toxins. Thanks to this entomopathogenic activity, bioinsecticides based on spores and crystals of Bt are used to specifically kill lepidopteran pests. Bt bioinsecticides represent more than 50% of the global market share of biopesticides. Upon ingestion of Bt bioinsecticides (spores and toxin crystals), Cry toxins are released from the crystal and destroy the insect gut epithelium allowing spores to invade the internal milieu. Then spores’ germination in the hemolymph lead to the pest death by septicemia in less than 3 days. However, the increasing environmental dispersion of Bt products raises the question about their potential risks for non-target animals.Using Drosophila melanogaster (a non-target organism), it has been previously shown that Bt vegetative cells are rapidly cleared from the intestine. This elimination is due to the activation of the local innate immune response. However, few studies suggest that Bt spores can persist in human and rodent intestines. To understand why and how Bt/Bc spores persist in the gut of non-target organisms and the implication of the innate immune response in fighting spores, I have used two powerful models: Drosophila melanogaster and mice. First, I have shown that Bt/Bc spores can persist, after acute ingestion, up to 10 days in the Drosophila midguts and at least 5 days in mice small intestines., Then, using an innovative tool, generated in my lab, consisting of red fluorescent spores that switch in green fluorescent once germinated (corresponding to vegetative bacteria), I have shown that spores accumulate mainly in the posterior midgut of Drosophila and the posterior small intestine of mice where they can further germinate. Then, I confirmed these data using quantitative monitoring of spores vs. vegetative bacteria accumulation in vivo in the intestines of Drosophila and mice. Altogether, my data suggest that, in the posterior regions of the Drosophila midgut (and the small intestine of mice), the innate immune response is inefficient to promptly eliminate spores and germinated bacteriaIn Drosophila midgut, the local innate immune response (i.e. the production of Reactive Oxygen Species (ROS) and Anti-Microbial Peptides (AMPs)) is mainly mounted in the anterior regions. I have shown that, unlike vegetative cells, spores do not trigger ROS and AMPs production. Strikingly, I have even observed that spores inhibit AMPs production. Interestingly, I have found a transcriptional induction of negative regulators (e.g. PGRP-SC1, -SC2, and -LB) of the immune signaling pathways in the posterior region of the midgut in response to spore ingestion. Then, using combinations of mutants of the two immune pathways, Imd and Toll, I have been the first to demonstrate that both immune pathways coexist in the Drosophila midgut, and may contribute either additively or synergistically to fight spore infections
Capalbo, Deise Maria Fontana. « Desenvolvimento de um processo de fermentação semi-solida para obtenção de Bacillus thuringiensis Berliner ». [s.n.], 1989. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254441.
Texte intégralTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
Made available in DSpace on 2018-07-14T04:05:54Z (GMT). No. of bitstreams: 1 Capalbo_DeiseMariaFontana_D.pdf: 6646761 bytes, checksum: 3e45f5891261d78171647a1a609d8da0 (MD5) Previous issue date: 1989
Resumo: O uso de inseticidas químicos no controle de pragas da agricultura e grãos armazenados nem sempre se mostrou adequado. Como alternativa, vem sendo sugeridos métodos biológicos, como o uso de microorganismos entomopatogênicos, altamente específicos. Entre esses, a bactéria Bacillus thurigiensis tem se destacado tanto pelo volume de trabalhos publicados, como pelo interesse comercial que representa. Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital.
Abstract: Recently it has been recognized that the chemical insecticides are by no means, the ideal solution for the control of insects that inflict the heaviest losses on agricultural crops. Thus, the introduction of highly specific biological means for insect control has offered a sound alternative to chemical insecticides. Among the best studied species is the commercially important Bacillus thuringiensis. Note: The complete abstract is available with the full electronic document.
Doutorado
Doutor em Engenharia de Alimentos