Auswahl der wissenschaftlichen Literatur zum Thema „Bioinsecticides Bt“
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Zeitschriftenartikel zum Thema "Bioinsecticides Bt"
Nawrot-Esposito, Marie-Paule, Aurélie Babin, Matthieu Pasco, Marylène Poirié, Jean-Luc Gatti und Armel Gallet. „Bacillus thuringiensis Bioinsecticides Induce Developmental Defects in Non-Target Drosophila melanogaster Larvae“. Insects 11, Nr. 10 (13.10.2020): 697. http://dx.doi.org/10.3390/insects11100697.
Der volle Inhalt der QuelleMastore, Maristella, Sara Caramella, Silvia Quadroni und Maurizio Francesco Brivio. „Drosophila suzukii Susceptibility to the Oral Administration of Bacillus thuringiensis, Xenorhabdus nematophila and Its Secondary Metabolites“. Insects 12, Nr. 7 (13.07.2021): 635. http://dx.doi.org/10.3390/insects12070635.
Der volle Inhalt der QuelleRajan, Vidya. „An Alkaline Foregut Protects Herbivores from Latex in Forage, but Increases Their Susceptibility to Bt Endotoxin“. Life 13, Nr. 11 (11.11.2023): 2195. http://dx.doi.org/10.3390/life13112195.
Der volle Inhalt der QuelleK, LENIN, UDAYASURIYAN V und KANNAIYAN S. „Bacillus thuringiensis and its use in agriculture“. Madras Agricultural Journal 88, june (2001): 187–97. http://dx.doi.org/10.29321/maj.10.a00317.
Der volle Inhalt der QuelleSouza, C. S. F., L. C. P. Silveira, R. M. Pitta, J. M. Waquil, E. J. G. Pereira und S. M. Mendes. „Response of field populations and Cry-resistant strains of fall armyworm to Bt maize hybrids and Bt-based bioinsecticides“. Crop Protection 120 (Juni 2019): 1–6. http://dx.doi.org/10.1016/j.cropro.2019.01.001.
Der volle Inhalt der QuelleXiong, Lei, Zhaoxia Liu, Jingge Li, Shuyuan Yao, Zeyun Li, Xuanhao Chen, Lingling Shen et al. „Analysis of the Effect of Plutella xylostella Polycalin and ABCC2 Transporter on Cry1Ac Susceptibility by CRISPR/Cas9-Mediated Knockout“. Toxins 15, Nr. 4 (06.04.2023): 273. http://dx.doi.org/10.3390/toxins15040273.
Der volle Inhalt der QuelleKovalenko, T. K., S. D. Grishechkina und N. S. Kocheneva. „Protection of soybean plants from phytophages under conditions of the Primorsky Territory“. Siberian Herald of Agricultural Science 53, Nr. 11 (13.12.2023): 46–52. http://dx.doi.org/10.26898/0370-8799-2023-11-5.
Der volle Inhalt der QuelleMagalhães, G. O., A. M. Vacari, C. P. DE Bortoli, A. F. Pomari, S. A. DE Bortoli und R. A. Polanczyk. „Interactions Between Bt-Bioinsecticides and Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae), a Predator of Plutella xylostella (L.) (Lepidoptera: Plutellidae)“. Neotropical Entomology 44, Nr. 5 (16.08.2015): 521–27. http://dx.doi.org/10.1007/s13744-015-0314-5.
Der volle Inhalt der QuelleDuarte, Adriane da Fonseca, Juliano Lessa Pinto Duarte, Liliane Nachtigall Martins, Lucas Raphael da Silva, Nycole de Souza Cunha, Fábio Pereira Leivas Leite, Uemerson Silva da Cunha und Daniel Bernardi. „Toxicity of Bacillus sp. (Bacillales: Bacillaceae) on the fungus gnats, Bradysia aff. ocellaris larvae (Diptera: Sciaridae)“. Bioscience Journal 39 (18.08.2023): e39089. http://dx.doi.org/10.14393/bj-v39n0a2023-59878.
Der volle Inhalt der QuelleDias, Felipe Cordeiro, Jaqueline Fernanda Dionísio, Daniel Ricardo Sosa-Gómez und Renata Da Rosa. „Molecular Characterization of Mutations in Anticarsia gemmatalis Cadherin Gene and their Relation to Bacillus thurigiensis Resistance“. Global Journal of Agricultural Innovation, Research & Development 9 (28.04.2022): 54–60. http://dx.doi.org/10.15377/2409-9813.2022.09.5.
Der volle Inhalt der QuelleDissertationen zum Thema "Bioinsecticides Bt"
Joly, Aurélia. „Rôle des gènes Polycomb dans l'homéostasie intestinale et impact des bioinsecticides Bt sur le développement de pathologies inflammatoires de l'intestin“. Electronic Thesis or Diss., Université Côte d'Azur, 2022. http://www.theses.fr/2022COAZ6018.
Der volle Inhalt der QuelleThe intestine is a complex multifunctional organ that is part of the digestive system. To maintain its integrity and its various functions (digestive, absorbent, immune, endocrine), the intestinal epithelium must deal with daily aggressions from food, metabolites, microbiota, pathogens or chemical molecules that are ingested. Since the intestinal epithelium is a single-cell layer, it must constantly fight to maintain its integrity and functions. To achieve this, intestinal stem cells (ISC) allow the intestine to generate new cells to replace injured, old or dead ones, maintaining homeostasis while limiting the risk of developing pathologies such as inflammatory diseases and cancers. My thesis work relies on the intestine of Drosophila melanogaster, a recognized model for studying intestinal homeostasis mechanisms and adult stem cell biology. In a first project, I analyzed the role of Polycomb group (PcG) proteins in ISC. In a second project, I also studied the effects of chronic ingestion of Bacillus thuringiensis (Bt) insecticides on the development of intestinal diseases.PcG proteins participate in the genome 3D organization and in gene expression control. PcG and their mechanisms are conserved from plants to mammals and were first identified as regulators in developmental processes. Later, PcG were described as involved in various processes, including the regulation of adult stem cells. The ubiquitination and trimethylation activities of the two major Polycomb repressive complexes, PRC1 and 2, lead to the propagation and maintenance of gene repression by chromatin compaction. Through loss-of-function experiments, I have shown that PRC1 and PRC2 allow the maintenance of ISC identity and their ability to generate differentiated cells. Indeed, ISC mutant lose stem cell markers and form neoplastic tumors. By studying different signaling pathways, I identified the JAK/STAT pathway as being activated in the resulting tumors. PcG proteins therefore directly impact gut homeostasis by acting as tumor suppressors in ISCs.In unfavorable conditions, the Bacillus genus can form an extremely resistant state of dormancy, the spore. The intestinal response to bacterial spores has been poorly studied and makes the originality of the team's work. In the form of spores, Bt is the most widely used bioinsecticide in agriculture as an alternative method to chemical pesticides to protect crops from pests. Bt is genetically very close to B. cereus (Bc), which is the second agent responsible for foodborne outbreaks (FBO) in France. While the impact of Bt on non-target organisms is controversial, recent studies suggest that some FBO could be attributed to Bt strains from agriculture. Thus, my second project aimed to assess whether the repeated presence of Bt in the intestine through the food could induce a pathological context. We have shown that Bt chronic ingestion, at agricultural doses, induces early dysplasia and premature aging of the gut. I also showed that this phenomenon was aggravated in fruit flies genetically predisposed to develop inflammatory diseases. Thus, this work provides a first assessment of the risks of intestinal diseases linked to the chronic consumption of Bt insecticides
Santos, Cicero Antonio Mariano dos. „Influência da chuva na eficácia de Bacillus thuringiensis associado a adjuvantes no controle de Spodoptera frugiperda em algodão /“. Jaboticabal, 2019. http://hdl.handle.net/11449/191220.
Der volle Inhalt der QuelleResumo: O algodão (Gossypium hirsutum L.) tem grande relevância para a economia mundial. Dentre os principiais fatores limitantes da produção estão os problemas fitossanitários, que ocorrem em todas as fases da cultura. O inseto Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) é importante devido a sua capacidade de causar danos nas folhas e maçãs do algodoeiro, muitas vezes requerendo a aplicação frequente de inseticidas para o seu controle. Em geral são utilizados inseticidas químicos. Entretanto, o uso de bioinseticidas têm aumentado consistentemente, principalmente aqueles à base de Bacillus thuringiensis, chamados de Bt bioinseticidas. Fatores abióticos como a chuva também interferem na eficiência de aplicações de Bt bioinseticidas e consequentemente no controle do organismo alvo. Uma alternativa que pode dar proteção ao Bt mediante chuva é a adição de adjuvantes a calda. Porém, pouco se sabe o quanto a associação do Bt com adjuvantes afeta no crescimento vegetativo, esporulação e persistência da bactéria e o controle. Portanto é de extrema importância à compreensão das interações físico-químicas e biológicas da mistura de Bt bioinseticidas e adjuvantes. Neste contexto, objetivou-se avaliar o efeito da adição de adjuvantes nas características físico-química e biológicas dos Bt bioinseticidas nas formulações Dipel® WP e Dipel® SC submetidas à chuva artificial para o controle de S. frugiperda em plantas de algodão. Para simular a chuva, foram utilizadas as lâminas de chuv... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Cotton (Gossypium hirsutum L.) has great relevance to the world economy. Among the main limiting factors of production are the phytosanitary problems that occur at all stages of the crop. The insect Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) is important because of its ability to cause damage to cotton leaves and apples, often requiring insecticides to be applied frequently for its control. In general, chemical insecticides are used. However, the use of bioinsecticides has consistently increased, especially those based on Bacillus thuringiensis, called Bt bioinsecticides. Abiotic factors such as rain also interfere with the efficiency of Bt applications and consequently in the control of the target organism. An alternative that can protect Bt in the rain is the addition of adjuvants to the syrup. However, little is known about how the association of Bt with adjuvants affects vegetative growth, sporulation and bacterial persistence and control. Therefore, it is extremely important to understand the physicochemical and biological interactions of the mixture of Bt bioinsecticides and adjuvants. In this context, the objective of this study was to evaluate the effect of the addition of adjuvants on the physicochemical and biological characteristics of Bt bioinsecticides in the formulations Dipel® WP and Dipel® SC submitted to artificial rain to control S. frugiperda in cotton plants. To simulate the rain, the 20mm artificial rain blades applied one hour after the ap... (Complete abstract click electronic access below)
Doutor
Jneid, Rouba. „Effet des bioinsecticides à base de Bacillus thuringiensis sur la physiologie intestinale de la Drosophile“. Electronic Thesis or Diss., Université Côte d'Azur, 2021. http://theses.univ-cotedazur.fr/2021COAZ6003.
Der volle Inhalt der QuelleMicrobes, toxins and chemicals such as pesticides are harmful agents that could attack the gastrointestinal tract throughout organismal life. This triggers a rapid renewing of damaged intestinal cells to sustain a functional barrier to limit the risk of developing pathologies. The repair process involves a transient proliferation of intestinal stem cells (ISCs) and the differentiation of their progeny into enterocytes to replace the damaged ones. Among pesticides, the broadly used bioinsecticides composed of spores and crystalline (Cry) toxins of Bacillus thuringiensis subsp kurstaki (Btk) are expected to supplant synthetic chemical pesticides to specifically fight lepidopteran pests. We have investigated here the effects of spores and toxins of Btk ingested along with the food on intestinal cellular homeostasis of the non-target dipteran Drosophila melanogaster. We showed that Btk Cry toxins induce enterocyte death and ISC proliferation. Surprisingly, a high proportion of ISC's daughter cells differentiate into enteroendocrine cells instead of their initial enterocyte destiny. This imbalanced intestinal cell composition is due to Cry toxins which weakened cell adhesion between the ISC mother cell and its immediate daughter progenitor leading the latter to adopt an enteroendocrine cell fate. Our results further showed that Cry1A family of toxins is implicated in this intestinal cell fate diversion, suggesting that Btk bioinsecticides induce non-negligible deleterious effects on gut physiology