Data/hora: 06/06/2024 05:52:54

Biblioteca(s): | Embrapa Soja.
Data corrente: | 20/02/2009
Data da última atualização: | 25/07/2017
Autoria: | BARCELLOS, F. G.; BATISTA, J. S. da S.; MENNA, P.; HUNGRIA, M.
Afiliação: | FERNANDO GOMES BARCELLOS, UEL; JESIANE STEFÂNIA DA SILVA BATISTA, UEL; PÂMELA MENNA, UEL; MARIANGELA HUNGRIA DA CUNHA, CNPSO.
Título: | Genetic differences between Bradyrhizobium japonicum variant strains constrasting in N2-fixation efficiency revealed by representational difference analysis.
Ano de publicação: | 2009
Fonte/Imprenta: | Archives of Microbiology, v. 191, n. 2, p. 113-122, Feb. 2009.
ISSN: | 0302-8933
DOI: | 10.1007/s00203-008-0432-0
Idioma: | Inglês
Conteúdo: | Two variant strains of Bradyrhizobium japonicum, derived from SEMIA 566, adapted to the stressful environmetal conditions of the Brazilian Cerrados and characterized by contrasting capacities for N2 fixation, were compared by representational difference analysis (RDA). Twenty-four gene sequences that are unique to the highly effective strain S 370 were identified, eight showing high similarity to known genes, nine encoding putative proteins and seven representing conserved hypothetical or hypothetical proteins: they were classified in eight functional categories. Among those genes, some were highlighted for their known or potential funcitions in plant-microbe interactions. The nodulation outer protein P (nopP), related to the type-III secretion system (TTSS) and a major determinant of nodulation of some tropical legumes, was detected in the genome of strain S 370. Three coding sequences (CDS) identified by RDA were expressed in proteomics experiments with B. japonicum strain USDA 110 (ChvE and NopP). The use of the sequences identified by RDA in the highly effective strain S 370 might represent an important tool to speed up strain selection programs, accelerating prescreening procedures. Additionally, the conserved hypothetical and hypothetical proteins idenfied in strain S 370 might encode important but still unknown protein related to the symbiosis that deserve further study.
Thesagro: | Bactéria; Bradyrhizobium Japonicum; Fixação de Nitrogênio; Nodulação; Soja.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (28910-1) - UPC - AP - PP - 11554 -  - 11554 - DIS