Please use this identifier to cite or link to this item: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570271
Research center of Embrapa/Collection: Embrapa Cerrados - Documentos (INFOTECA-E)
Date Issued: 2006
Type of Material: Documentos (INFOTECA-E)
Authors: REIS JÚNIOR, F. B. dos
FARIA, S. M. de
MENDES, I. de C.
SIMON, M. F.
LOUREIRO, M. de F.
ELLIOT, G. N.
YOUNG, P.
SPRENT, J. I.
JAMES, E. K.
Title: "Beta-rizóbios": os novos simbiontes encontrados em espécies de Mimosa.
Publisher: Planaltina, DF: Embrapa Cerrados, 2006.
Pages: 20 p.
Series/Report no.: (Embrapa Cerrados. Documentos, 153).
Language: pt_BR
Keywords: Feed legumes.
Description: The fixation and transformation of atmospheric dinitrogen into ammonia and hence into organic e compounds is a crucial part of the nitrogen cycle. Nitrogenase, the enzyme responsible, has a wide taxonomie distribution in the bacteria and archaea, but is confined to a limited number of species. Among these, rhizobia, whieh form nodules on the roots of legumes, are recognised as the main contributors of biologieally-fixed nitrogen. Until recently, it has been generally accepted that legumes are nodulated exelusively by members of the alfa-proteobaeteria belonging to a number of related genera in the family Rhizobiaceae. In this document we review some results from recent studies that presents the newly-discovered beta-rhizobia which challenge the accepted century-old dogma that only Rhizobium and its relatives can nodulate legumes and provide a biodiversity dimension that was totally unexpected 6 years ago.
Thesagro: Fixação de Nitrogênio
Leguminosa Forrageira
Simbiose.
Rhizobium
NAL Thesaurus: nitrogen fixation
symbiosis.
Data Documento: 2007-07-13
Appears in Collections:Série Documentos (CPAC)

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