Data/hora: 23/09/2024 01:58:56

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	27/07/2009	
Data da última atualização: 	26/06/2024	
Autoria: 	MENNA, P.; PEREIRA, A. A.; BANGEL, E. V.; HUNGRIA, M.	
Afiliação: 	PÂMELA MENNA, UEL/CNPq-MCT; ALAN ALVES PEREIRA, CNPq-MCT; ELIANE VILLAMIL BANGEL, FEPAGRO; MARIANGELA HUNGRIA DA CUNHA, CNPSO.	
Título: 	Rep-PCR of tropical rhizobia for strain fingerprinting, biodiversity appraisal and as a taxonomic and phylogenetic tool.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	Symbiosis, Philadelphia, v. 48, n. 1-3, p. 120-130, Feb. 2009.	
Idioma: 	Inglês	
Conteúdo: 	With more than 30 million doses of rhizobial inoculants marketed per year, it is probable that Brazilian agriculture benefits more than any other country from symbiotic N2 fixation. As a result of strain-selection programs, 142 strains of rhizobia are officially recommended for use in commercial inoculants for ninety-six leguminous crops. In this study, sixty-eight of these elite strains were characterized by rep-PCR with the BOX-primer. Reproducibility of the DNA profiles was confirmed, suggesting efficacy of BOX-PCR both for control of quality of inoculants and for preliminary characterization of rhizobial culture collections. Strains of different species never showed similarity higher than 70% in the BOX-PCR analysis, however, some strains of the same species fit into more than one cluster, and correlation between BOX-PCR products and l6S rRNA sequences was low (7.6%). On the other hand, a polyphasic approach ? 20%&#8758;80% of BOX-PCR:16S rRNA which correlated well with the l6S rRNA analysis (95%), and provided higher definition of the genotypes, resulting in clearer indications of the taxonomic groups ? might expedite rhizobial diversity studies.	
Thesagro: 	Bactéria; Fixação de Nitrogênio; Inoculante; Taxonomia.	
Thesaurus Nal: 	Inoculation methods; Nitrogen fixation.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (29444-1) - UPC - AP - DD -  -  -  - DIS