Genetically Modified Plants
Mostrando 13-24 de 61 artigos, teses e dissertações.
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13. A simple and reliable method for the screening of transgenic tobacco plants.
Even though much improvement has been made in plant transformation methods, the screening of transgenic plants is often a laborious work. Most approaches for detecting the transgene in transformed plants are still time-consuming, and can be quite expensive. The objective of this study was to search for a simpler method to screen for transgenic plants. The in
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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14. Rhizosphere bacterial communities of potato cultivars evaluated through PCR-DGGE profiles.
The objective of this work was to determine the shifts on the PCR-DGGE profiles of bacterial communities associated to the rhizosphere of potato cultivars, in order to generate baseline information for further studies of environmental risk assessment of genetically modified potato plants. A greenhouse experiment was carried out with five potato cultivars (Ac
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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15. Gene flow from transgenic common beans expressing the bar gene.
Gene flow is a common phenomenon even in self-pollinated plant species. With the advent of genetically modified plants this subject has become of the utmost importance due to the need for controlling the spread of transgenes. This study was conducted to determine the occurrence and intensity of outcrossing in transgenic common beans. In order to evaluate the
GM Crops. Publicado em: 2011
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16. Interferências no agrossistema e riscos ambientais de culturas transgênicas tolerantes a herbicidas e protegidas contra insetos.
A engenharia genética possibilitou o desenvolvimento de cultivares transgênicas, cuja área plantada em 18 países atinge 67,7 milhões de hectares, principalmente de cultivares tolerantes a herbicidas e protegidas contra insetos-praga. Mesmo após rigorosa avaliação de riscos, o plantio dessas cultivares tem despertado preocupação com impactos ambient
Cadernos de Ciência & Tecnologia. Publicado em: 2011
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17. Caracterização bioquímica e molecular da ß-Galactosidade durante a maturação de frutos de coffea arabica
ß-galactosidases are a class of glycosyl-hydrolases that act on the plant cell primary walls, hydrolyzing ß-D-galactose at the nonreducing ends of ß-D-galactosides present in several biological molecules. Initially a characterization of the monosaccharides present in the primary wall of the pericarp and endosperm of Coffea arabica fruits at different ripe
Publicado em: 2011
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18. Gene flow of genetically modified soybeans, in summer and winter sowings, with isolations of soybean or maize / Fluxo gênico de soja geneticamente modificada, em semeaduras de verão e de inverno, com isolamentos de soja ou milho
Genetically modified soybean, tolerant to glyphosate, expanded its growing area in few years becoming the most sown in the country. The advantages of its use are many compared to the conventional soybean, which has led soybean farmers to prefer it. However, since some markets still prefer conventional soybean and its production occurs in smaller areas, there
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/12/2010
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19. Colonization of rice and Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) larvae by genetically modified endophytic Methylobacterium mesophilicum
The colonization of Spodoptera frugiperda J.E. Smith larvae and rice seedlings by genetically modified endophytic bacterium Methylobacterium mesophilicum, and also the possible transfer of this bacterium to inside the larva's body during seedlings consumption were studied. The data obtained by bacterial reisolation and fluorescence microscopy showed that the
Neotropical Entomology. Publicado em: 2010-04
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20. Effects of genetically modified cotton (Bollgard®) on non-target organisms / Efeitos do algodoeiro geneticamente modificado (Bollgard®) em organismos não-alvo
The effects of the genetically modified cotton (Bollgard®) expressing Bacillus thuringiensis (Bt) Cry1Ac toxin on non-target arthropods was evaluated under laboratory and field studies. Evaluations of arthropod abundance on Bollgard® cotton (Delta Pine 90) and on its isoline (Acala 90) were carried out during three consecutive field seasons. The first stud
Publicado em: 2010
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21. Efeito de candidatos a supressores de silenciamento gênico viral em expressão de proteína recombinate em plantas
The aim of this work was to increase the efficiency of transient heterolog protein expression system using viral gene-silencing suppressors and Agrobacterium integrated. The use of plants as bioreactor is a promising strategy for large scale production of the heterolog protein. However, the use of genetically modified plants may lead to low protein expressio
Publicado em: 2010
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22. Aspectos biotecnológicos da interação entre bactérias e cana-de-açúcar (Saccharum sp., L.) / Biotechnological aspects of bacteria-sugarcane (Saccharum sp., L.) interactions
Sugarcane is one of the most important Brazilian crops. Its importance is increasing due to the gradual substitution of fossil fuel for renewable and cleaner energy sources, such as ethanol Consequently, the biotechnological aspects that mediate sugarcane-bacterium interactions must be evaluated; studies from tropical countries are incipiente Bacterium-plant
Publicado em: 2010
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23. A methodological proposal of Environmental and Food Impact Assessment of Genetically Modified Plants (GMP). / Avaliação de Impactos Ambientais e Alimentares de Plantas Geneticamente Modificadas (PGM): uma proposta metodológica.
Diante do atual cenário de expansão dos plantios geneticamente modificados e da carência de metodologias no Brasil para prever os seus impactos foi desenvolvimento um método intitulado Impactos-PGM para Avaliação de Impactos Ambientais e Alimentares de Plantas Geneticamente Modificadas utilizando como ferramenta um Software de aplicação geral adequad
Publicado em: 2009
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24. Diversidade da comunidade bacteriana endofítica de sementes de soja e o seu potencial biotecnológico / Endophytic bacterial community diversity of soybean seeds and its biotechnological potential
Plant tissues, including seeds, are inhabited by microorganisms called endophytes, whose interaction with the plant can offer advantages to the host. It is known that plants growth promotion is induced by indole acetic acid (IAA) synthesis, phosphate solubilization and nitrogen fixation, among others. The control of phytopathogenic fungi is also related to a
Publicado em: 2009