Gene Cry1
Mostrando 1-12 de 150 artigos, teses e dissertações.
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1. Larvicidal and adulticidal effects and ultrastructural changes of larvae midgut epithelium of Musca domestica (Diptera: Muscidae) fed with Bacillus thuringiensis var. kyushuensis
Abstract INTRODUCTION: Musca domestica is resistant to many insecticides; hence, biological control is a suitable alternative. METHODS: We evaluated the lethality of strain Btk176 towards the larval and adult M. domestica and the histopathological effects in the larvae midgut. RESULTS: We observed 99% larval and 78.9% adult mortality within 48 hours of sp
Rev. Soc. Bras. Med. Trop.. Publicado em: 01/08/2019
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2. BRS 430 B2RF and BRS 432 B2RF: Insect-resistant and glyphosate-tolerant high-yielding cotton cultivars
Abstract Transgenic cotton cultivars BRS 430 B2RF and BRS 432 B2RF, medium and late season respectively, were developed by EMBRAPA in partnership with Bahia Foundation, aiming to create a high-yielding germplasm. The Bt toxins Cry1Ac and Cry2Ab target lepidopteran pests and the CP4-EPSPS gene confers tolerance to the herbicide glyphosate.
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-04
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3. Genetic engineering of cotton with a novel cry2AX1 gene to impart insect resistance against Helicoverpa armigera
Abstract Embryogenic calli of cotton (Coker310) were cocultivated with the Agrobacterium tumefaciens strain LBA4404 harbouring the codon-optimised, chimeric cry2AX1 gene consisting of sequences from cry2Aa and cry2Ac genes isolated from Indian strains of Bacillus thuringiensis. Forty-eight putative transgenic plants were regenerated, and PCR analysis of thes
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-09
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4. Expression of cry1Ab gene from a novel Bacillus thuringiensis strain SY49-1 active on pest insects
ABSTRACT In this study, the cry1Ab gene of previously characterized and Lepidoptera-, Diptera-, and Coleoptera-active Bacillus thuringiensis SY49-1 strain was cloned, expressed and individually tested on Ephestia kuehniella (Lepidoptera: Pyralidae) and Plodia interpunctella (Lepidoptera: Pyralidae) larvae. pET-cry1Ab plasmids were constructed by ligating the
Braz. J. Microbiol.. Publicado em: 2016-09
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5. Efeito da resistência de Spodoptera frugiperda (J.E.Smith, 1797) (Lepidoptera: Noctuidae) a lambda-cyhalothrin na interação com o milho geneticamente modificado (MON810) e na resposta imunológica ao parasitismo por Campoletis af / Effect of resistance of Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) to lambda-cyhalothrin on the interaction with genetically modified maize (MON810) and the immune response to parasitization by Campoletis aff. flavicincta (Hymenoptera: Ichneumonidae)
Fitness costs of insect resistance to insecticides can be exploited by integrating other pest control strategies in Integrated Pest Management (IPM) programs. The objective of this research was to evaluate the existence of fitness costs associated with the resistance of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) to the pyrethroid insecticid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2012
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6. Dois novos isolados brasileiros de Bacillus thuringiensis tóxicos para Anticarsia gemmatalis (Lepidoptera: Noctuidae)
Bacillus thuringiensis é uma bactéria utilizada na produção de biopesticidas e de plantas resistentes às pragas por causa da síntese de cristais proteicos pelos genes cry, os quais são eficazes no controle de diversas ordens de insetos, como os lepidópteros. O presente trabalho objetivou a avaliação e a caracterização de dois novos isolados de B.
Brazilian Journal of Biology. Publicado em: 2012-05
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7. Identificação e caracterização de genes vip e cry coleóptero‑específicos em isolados de Bacillus thuringiensis
O objetivo deste trabalho foi identificar e caracterizar os genes cry3, vip1, vip2 e vip1/vip2 em uma coleção de 1.078 isolados de Bacillus thuringiensis potencialmente tóxicos para larvas de coleópteros. Foram utilizados pares de oligonucleotídeos iniciadores gerais obtidos a partir de regiões conservadas dos genes e do alinhamento de sequências cons
Pesquisa Agropecuária Brasileira. Publicado em: 2011-09
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8. Characterization of cry2-type genes of Bacillus thuringiensis strains from soil-isolated of Sichuan basin, China
Sichuan basin, situated in the west of China, is the fourth biggest basin in China. In order to describe a systematic study of the cry2-type genes resources from Bacillus thuringiensis strains of Sichuan basin, a total of 791 Bacillus thuringiensis strains have been screened from 2650 soil samples in different ecological regions. The method of PCR-restrictio
Brazilian Journal of Microbiology. Publicado em: 2011-03
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9. Agronomic performance, chromosomal stability and resistance to velvetbean caterpillar of transgenic soybean expressing cry1Ac gene.
The objective of this work was to analyze the agronomic performance and chromosomal stability of transgenic homozygous progenies of soybean [Glycine max (L.) Merrill.], and to confirm the resistance of these plants against Anticarsia gemmatalis. Eleven progenies expressing cry1Ac, hpt and gusA genes were evaluated for agronomic characteristics in relation to
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Expressão heteróloga do gene cry1Aa de Bacillus thuringiensis kurstaki estirpe S76 em Escherichia coli e avaliação da atividade entomopatogênica contra larvas da broca da cana-de-açúcar.
2010
SEMANA CIENTÍFICA JOHANNA DÖBEREINER. Publicado em: 2011
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11. Estudo da atividade da proteína Cry1Ia expressa em células de inseto promissora para o controle do bicudo do algodoeiro (Anthonomus grandis Boheman) e da lagarta do cartucho-do-milho (Spodoptera frugiperda).
O algodão é uma das mais importantes culturas em nível mundial, e hospedeiro de um grande número de pragas, como Spodoptera frugiperda e Anthonomus grandis. Uma alternativa para o controle desses insetos é a construção de cultivares de algodão transgênicos, contendo gene(s) de resistência a esses insetos. Bacillus thuringiensis é uma bactéria que
Brasília: Embrapa Recursos Genéticos e Biotecnologia. Publicado em: 2011
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12. Agronomic performance, chromosomal stability and resistance to velvetbean caterpillar of transgenic soybean expressing cry1Ac gene.
2008
Pesquisa Agropecuária Brasileira. Publicado em: 2011