Data/hora: 23/09/2024 04:00:37

Biblioteca(s): 	Embrapa Agrobiologia.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	Internacional - A	
Data corrente: 	22/04/2008	
Data da última atualização: 	16/03/2015	
Autoria: 	ROUWS, L. F. M.; SIMÕES ARAÚJO, J. L.; HEMERLY, A. S.; BALDANI, J. I.	
Afiliação: 	Luc F. M. Rouws, UFRRJ; Jean Luis Simões Araújo, Embrapa Agrobiologia; Adriana S. Hemerly, Instituto de Pesquisas do Jardim Botânico do RJ; José Ivo Baladani, Embrapa Agrobiologia.	
Título: 	Validation of a Tn5 transposon mutagenesis system for Gluconacetobacter diazotrophicus through characterization of a flagellar mutant.	
Ano de publicação: 	2008	
Fonte/Imprenta: 	Archives of Microbiology, New York, v. 189, n. 4, p. 397-405, apr. 2008.	
Idioma: 	Inglês	
Notas: 	Parceria: UFRRJ; Instituto de Pesquisas do Jardim Botânico do Rio de Janeiro.	
Conteúdo: 	Gluconacetobacter diazotrophicus is a nitrogen-fixing bacterium, which was originally isolated from the interior of sugarcane plants. The genome of strain PAL5 of G. diazotrophicus has been completely sequenced and a next step is the functional characterization of its genes. The aim of this study was to establish an efficient mutagenesis method, using the commercial Tn5 transposon EZ::Tn5?<KAN-2>Tnp Transposome? (Epicentre). Up to 1 × 106 mutants per microgram of transposome were generated in a single electroporation experiment. Insertion-site flanking sequences were amplified by inverse PCR and sequenced for 31 mutants. For ten of these mutants, both insertion flanks could be identified, confirming the 9 bp duplication that is typical for Tn5 transposition. Insertions occurred in a random fashion and were genetically stable for at least 50 generations. One mutant had an insertion in a homolog of the flagellar gene flgA, and was therefore predicted to be affected in flagella-dependent traits and used to validate the applied mutagenesis methodology. This mutant lacked flagella and was non-motile on soft agar. Interestingly, it was also strongly affected in the ability to form biofilm on glass wool.	
Palavras-Chave: 	Bactéria endofítica.	
Thesaurus Nal: 	Gluconacetobacter diazotrophicus.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAB - (35051-1) - UPC - AP - -- -  -  - 0024125 - DIS