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| Carvalho,Flávia Maria de Souza; Caramori,Lázara Pereira Campos; Leite Júnior,Rui Pereira. |
| Xanthomonas axonopodis pv. citri strains that cause disease in citrus were investigated by pulsed field and plasmid profile analysis. For the first method, genomic DNA was digested by the rare-cutting enzymes Xba I and Vsp I. The strains evaluated were collected in seven different States of Brazil and in Argentina, Bolivia, Paraguay and Uruguay. Genetic variability was found among strains of X. axonopodis pv. citri from different geographical areas Argentina, Bolivia and Uruguay, with similarities varying from 0.62 to 0.83. However, the strains collected in Brazil, despite being from different States, have shown a genetic similarity ranging from 0.83 to 1.00. Cluster analysis showed a relationship between genomic similarity and geographical origin of the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Genetic variability; Bacterium; Citrus; PFGE. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300020 |
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| Rentería Gómez, Alonso. |
| El objetivo de la investigación fue cuantificar la producción del licopeno en jitomate (Solanum lycopersicum L.) en función de la variedad, del sustrato y promotores de crecimiento utilizados para su producción. Para cumplir el objetivo se instaló un experimento factorial 2 x 2 x 2 para obtener 16 tratamientos con seis repeticiones. Los tratamientos fueron aplicados en dos cultivares de jitomate: una variedad comercial “sweet cluster” y un cultivar silvestre; con dos sustratos: tezontle y fibra de coco; como promotores de crecimiento se aplicó al follaje yoduro de potasio y se inoculó a la raíz la bacteria promotora de crecimiento (BPC) Sphingomonas sp. Se evaluó la concentración de licopeno en el fruto así como el rendimiento total y por racimo. Los... |
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Palavras-chave: Solanum lycopersicum; Bacterias; Yoduro de potasio; Hidroponia; Bacterium; Potassium iodine; Hydroponics; Edafología; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2050 |
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| Fagundes,RBS; Picoli,EAT; Lana,UGP; Valicente,FH. |
| Bacillus thuringiensis harbors genes encoding Cry proteins found in chromosomes or plasmids of different sizes (4-150 Mb). Although the smaller plasmids are more abundant in B. thuringiensis, their specific function is unknown. As for the megaplasmids, their main recognized function is to harbor cry genes, although the sequencing of some of these plasmids indicates the occurrence of other important genes. This work used a new protocol for practical and rapid extraction of plasmid DNA in order to characterize the plasmid patterns of Brazilian strains belonging to Embrapa Milho e Sorgo research center B. thuringiensis bank. We tried to further assess the relationship of plasmid patterns with strains belonging to the same serovars and strains causing 100% and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterium; Cry protein; Gene; Megaplasmid. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000500012 |
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| Leonard, Noemie. |
| Recirculation of the water of fish rearing systems requires a biological treatment based on the nitrifying activity of autotrophic bacteria. In parallel heterotrophic bacterial populations utilise the organic substrate, produced by the fish, to grow. Opposite to the autotrophic populations, the heterotrophic bacteria (1) have a quick growth and (2) might contain fish pathogenic strains. The main aim was to characterise the heterotrophic bacteria populations ?.nd to understand (1) which parameters do control the dynamics of their populations and (2) their influence on the quality of the recirculating water. In a rearing system, the heterotrophic bacterial populations are stable in number and in genus, for a given operating mode. The bacteria are either... |
| Tipo: Text |
Palavras-chave: Carbon; Gills; Bacterium; Humics substances; Fish; Ozone; Aquiculture; Carbone; Branchies; Bacterie; Substances humiques; Poisson; Ozone; Aquaculture. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/these-1728.pdf |
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