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Your search keyword '"Oliveira, Claudia M. F."' showing total 3 results
Start Over Author "Oliveira, Claudia M. F." Publisher american society for microbiology
3 results on '"Oliveira, Claudia M. F."'

1. A strain of Bacillus sphaericos causes slower development of resistance in Culex quinquefaciatus

Author

Guofeng Pei, Oliveira, Claudia M. F., Zhiming Yuan, Nielsen-LeRoux, Christina, Silva-Filha, Maria Helena, Jianpin Yan, and Regis, Leda

Subjects
Microbiological research -- Analysis, Bacteria -- Growth, Culex -- Genetic aspects, Microbial populations -- Genetic aspects, Microorganisms -- Evolution, Biological sciences
Abstract

Research has been conducted on Bacillus sphaericos strains. The resistance evolution to these strains in Culex quinquefaciatus populations collected from China and Brazil has been investigated and the details are reported.

Published
2002

2. Diversity of Bacillus thuringiensis strains from Latin America insecticidal activity against different mosquito species

Author

Ibarra, Jorge E., Rincon, M. Cristina del, Orduz, Sergio, Noriega, David, Benintende, Graciela, Monnerat, Rose, Regis, Leda, Oliveira, Claudia M. F. de, Lanz, Humberto, Rodriguez, Mario H., Sanchez, Jorge, Pena, Guadalupe, and Bravo, Alejandra

Subjects
Polymerase chain reaction -- Analysis, Microbial populations -- Environmental aspects, Microbial populations -- Genetic aspects, Microbial populations -- Physiological aspects, Microbiology -- Research, Microbiology -- Environmental aspects, Biological diversity -- Genetic aspects, Biological diversity -- Psychological aspects, Biological diversity -- Environmental aspects, Bacillus thuringiensis -- Genetic aspects, Bacillus thuringiensis -- Physiological aspects, Bacillus thuringiensis -- Environmental aspects, Biological sciences
Abstract

Research has been conducted on Latin American Bacillus thuringiensis. The authors have characterized several strains from this bacterium, and have reported the identification of mosquitocidal cry and cyt gene carried out via the use of PCR analysis.

Published
2003

3. Conjugal Transfer of a Toxin-Coding Megaplasmid from Bacillus thuringiensis subsp. israelensis to Mosquitocidal Strains of Bacillus sphaericus.

Author

Gammon, Katherine, Jones, Gareth W., Hope, Steven J., de Oliveira, Claudia M. F., Regis, Lêda, Filha, Maria Helena N. L. Silva, Dancer, Brian N., and Berryl, Colin

Subjects
*BACILLUS (Bacteria), *MOBILE genetic elements, *BACILLUS thuringiensis, *BACILLACEAE, *METABOLITES, *ANTIBACTERIAL agents, *ERYTHROMYCIN, *AEDES aegypti, *MOLECULAR genetics
Abstract

Both Bacillus sphaericus and Bacillus thuringiensis subsp. israelensis produce mosquitocidal toxins during sporulation and are extensively used in the field for control of mosquito populations. All the known toxins of the latter organism are known to be encoded on a large plasmid, pBtoxis. In an attempt to combine the best properties of the two bacteria, an erythromycin resistance-marked pBtoxis plasmid was transferred to B. sphaericus by a mating technique. The resulting transconjugant bacteria were significantly more toxic to Aedes aegypti mosquitoes and were able to overcome resistance to B. sphaericus in a resistant colony of Culex quinquefasciatus, apparently due to the production of Cry11A but not Cry4A or Cry4B. The stability of the plasmid in the B. sphaericus host was moderate during vegetative growth, but segregational instability was observed, which led to substantial rates of plasmid loss during sporulation. [ABSTRACT FROM AUTHOR]

Published
2006
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