Antibiosis
Mostrando 13-24 de 64 artigos, teses e dissertações.
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13. Atividade antimicrobiana de metabólitos extracelulares das bactérias antagonistas isoladas de cultivos de batata (Solanum phureja)
Os microorganismos biocontroladores têm capacidade de produzir compostos ativos que inibem o desenvolvimento de fitopatógenos, constituindo-se em uma ferramenta promissora para a obtenção de princípios ativos que substituem os pesticidas de sínteses. No presente trabalho, avaliou-se a capacidade de um conjunto de gentes com potencial biocontrolador, pa
Summa phytopathol.. Publicado em: 2014-09
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14. Search for endophytic diazotrophs in barley seeds
Eight endophytic isolates assigned to Pseudomonas, Azospirillum, and Bacillus genera according to pheno-genotypic features were retrieved from barley seeds under selective pressure for nitrogen-fixers. Genetic relationships among related isolates were investigated through RAPD. Six isolates displayed nitrogen-fixing ability, while all could biosynthesize ind
Braz. J. Microbiol.. Publicado em: 2014-06
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15. Ziyuglycoside II-induced apoptosis in human gastric carcinoma BGC-823 cells by regulating Bax/Bcl-2 expression and activating caspase-3 pathway
Ziyuglycoside II is an active compound of Sanguisorba officinalis L. that has anti-inflammation, antioxidation, antibiosis, and homeostasis properties. We report here on the anticancer effect of ziyuglycoside II on human gastric carcinoma BGC-823 cells. We investigated the effects of ziyuglycoside II on cell growth, cell cycle, and cell apoptosis of this cel
Braz J Med Biol Res. Publicado em: 13/08/2013
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16. Role of killer factors in the inhibitory activity of bio-control yeasts against Penicillium expansum and Aspergillus ochraceus
This work evaluated the antagonism of killer positive yeast strains (isolated from 11 samples of different frozen fruit pulps) against the strains of Penicillium expansum and Aspergillus ochraceus. Of the total 41 killer yeasts tested in YM agar, 19 showed antibiosis against P. expansum and A. ochraceus, with inhibition zone ranging from 10 to 18 mm and 10 t
Braz. arch. biol. technol.. Publicado em: 2013-08
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17. Resistência de genótipos de tomateiro à Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) biótipo B. / Resistance in tomato genotypes to Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidade) biotype B.
A mosca-branca Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) destaca-se como uma das principais pragas do tomateiro no Brasil. A busca por cultivares resistentes, derivadas de tomateiros selvagens surge como oportunidade de redução dos problemas causados por esta praga. Assim, genótipos de tomateiro oriundos do cruzamento entre Solanum lycopersicum L. e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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18. Biologia e comportamento de Sitobion avenae (Hemiptera: Aphididae) em quatro cultivares comerciais de trigo (Triticum aestivum L.) / Biology and behavior of Sitobion avenae (Hemiptera: Aphididae) in four commercial varieties of wheat
The use of resistant wheat cultivars to S. avenae is important for the management of culture due to the potential damage of aphid. In Brazil, however, little is known about the resistance of wheat cultivars to S. avenae. The goal of this work was to assess the behaviour and biology of S. avenae in leaves and ears of four commercial wheat cultivars to verify
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/05/2011
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19. Antibiosis and antixenosis of six commonly produced potato cultivars to the green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae)
The antibiotic and antixenotic resistance of six commonly produced potato cultivars in Iran including Aozonia, Agria, Cosima, Cosmos, Kondor and Savalan to the green peach aphid, Myzus persicae Sulzer, were investigated under laboratory conditions at 20 ± 2ºC, 65 ± 5% RH and 16:8h (L:D) in 2009. Antibiosis experiments showed significant differences in the
Neotropical Entomology. Publicado em: 2011-06
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20. Resistance of Soybean Genotypes to Bemisia tabaci (Genn.) Biotype B (Hemiptera: Aleyrodidae)
The silverleaf whitefly Bemisia tabaci (Genn.) biotype B has become a serious problem for soybean cultivation because it can significantly reduce soybean productivity. The use of soybean cultivars resistant to whitefly attack is an important strategy in an integrated pest management (IPM) program. This study evaluated the preference for oviposition and colon
Neotropical Entomology. Publicado em: 2011-02
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21. Antagonismo direto e biocontrole da podridão-mole-do-tomateiro pelo uso de procariotas.
O objetivo deste trabalho foi avaliar procariotas quanto ao potencial de antagonismo direto para o biocontrole da podridão-mole-do-tomateiro (Pectobacterium carotovorum subsp. carotovorum). Avaliaram-se 45 isolados bacterianos pelo teste de antibiose contra o patógeno. Foram feitos dois ensaios em que sementes de tomate (Lycopersicon esculentum Mill.) cv.
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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22. Antagonismo direto e biocontrole da podridão-mole-do-tomateiro pelo uso de procariotas.
O objetivo deste trabalho foi avaliar procariotas quanto ao potencial de antagonismo direto para o biocontrole da podridão-mole-do-tomateiro (Pectobacterium carotovorum subsp. carotovorum). Avaliaram-se 45 isolados bacterianos pelo teste de antibiose contra o patógeno. Foram feitos dois ensaios em que sementes de tomate (Lycopersicon esculentum Mill.) cv.
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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23. Induction of systemic resistance in tomato by the autochthonous phylloplane resident Bacillus cereus.
The objective of this work was to verify if the induced resistance mechanism is responsible for the capacity of a phylloplane resident bacteria (Bacillus cereus), isolated from healthy tomato plants, to control several diseases of this crop. A strain of Pseudomonas syringae pv. tomato was used as the challenging pathogen. The absence of direct antibiosis of
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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24. Induction of systemic resistance in tomato by the autochthonous phylloplane resident Bacillus cereus.
The objective of this work was to verify if the induced resistance mechanism is responsible for the capacity of a phylloplane resident bacteria (Bacillus cereus), isolated from healthy tomato plants, to control several diseases of this crop. A strain of Pseudomonas syringae pv. tomato was used as the challenging pathogen. The absence of direct antibiosis of
Pesquisa Agropecuária Brasileira. Publicado em: 2011