Data/hora: 22/06/2024 04:11:53

Biblioteca(s): | Embrapa Solos.
Data corrente: | 09/11/2004
Data da última atualização: | 28/03/2022
Autoria: | COUTINHO, H. L. da C.; OLIVEIRA, V. M. de; MOREIRA, F. M. S.
Afiliação: | HEITOR LUIZ DA COSTA COUTINHO, CNPS; VALÉRIA M. DE OLIVEIRA, FUNDAÇÃO TROPICAL DE PESQUISAS E TECNOLOGIA ANDRÉ TOSSELLO; FÁTIMA M. S. MOREIRA, UFLA.
Título: | Systematics of legume nodule nitrogen fixing bacteria: agronomic and ecological applications.
Ano de publicação: | 2000
Fonte/Imprenta: | In: PRIEST, F. G.; GOODFELLOW, M. (ed.). Applied microbial systematics. Drodrecht: Kluwer Academic Publishers, 2000. cap. 5, p. 107-134.
DOI: | https://doi.org/10.1007/978-94-011-4020-1_5
Idioma: | Inglês
Conteúdo: | Biological nitrogen fixation (BNF) is easily the most studied microbial process applied to agriculture. It consists of the reduction of atmospheric dinitrogen (N2), unavailable to higher plants, into ammonium (NH4+), an assimilable form of this nutrient. The BNF process is performed solely by microorganisms, the majority inhabiting the soil ecosystem, and is considered to be the most relevant component of the global nitrogen cycle (Ishizuka, 1992). The best known diazotrophs (dinitrogen fixing bacteria) are rhizobia, which are able to establish a symbiotic relationship with plants of the family Leguminosae, hereby called legumes. This symbiosis is characterized by a highly specific association between plant and bacteria. Particular varieties of legume species recognize specific strains of rhizobia, which are able to infect the legume roots. This process triggers the expression of certain plant genes, resulting in the development of nodules around the site of invasion. In the interior of the nodules the bacteria undergo morphological and physiological transformations, becoming nitrogen fixing bacteroides and supplying the plant with nutrient in exchange for carbon-rich material derived from plant photosynthesis.
Palavras-Chave: | Biological Nitrogen Fixation; Environmental Microbiology; Fixação biológica de nitrogênio; Legume Species; Rhizobial Strain.
Thesaurus Nal: | Nitrogen fixation.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (11553-1) - UPC - PL - DD -  -  - 2004.00016 - DIS