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Biological nitrogen fixation by Phaseolus vulgaris

Fixação biológica de azoto em Phaseolus vulgaris

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 2016 English Publisher:Sociedade de Ciencias Agrarias de PortugalJournal:Revista de Ciências Agrárias, volume 39, pages 526-537 (issn: 0871-018X, eissn: 2183-041X,

Authors: Soares, Ricardo; Tejo, Jesus; Veloso, Maria Manuela; Castro, Isabel Videira e;

doi: 10.19084/rca16104

Biological nitrogen fixation by Phaseolus vulgaris

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Abstract

Phaseolus vulgaris L. (common bean) is considered a promiscuous legume in its association with rhizobia since it can be nodulated by several species of the Rhizobiaceae family. In a field experiment in Oeiras (Portugal), strains were isolated from the root nodules of P. vulgaris 675. Each strain was inoculated in two P. vulgaris landraces: Pv 648 and Pv 675. Phylogeny of 16S rRNA, recA and nodC genes were inferred, using partial gene sequences. The results of plant inoculation assays have shown that only one of the isolated strains could successfully nodulate at least the P. vulgarislandrace (Pv 675), with an index of effectiveness of 31%. This strain was identified as belonging to Rhizobium sullae species by the 16S rRNA and recA genes but it also has a nodC gene from Rhizobium gallicum. The remaining strains were identified as belonging to R. gallicum, Agrobacterium tumefaciens and A. arsenijevicii.

Revista de Ciências Agrárias, vol. 39 n.º 4 (2016)

Related Organizations

Instituto Nacional de Investigação Agrária e Veterinária
Portugal

Keywords

rizóbio, phylogenetic characterization, Fixação biológica de azoto, nodulação, caraterização filogenética, nodulation, Biological nitrogen fixation, rhizobia, Phaseolus vulgaris

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