title: Biodiversity of uptake hydrogenase systems from legume endosymbiotic bacteria.
abstract: Uptake hydrogenases in legume endosymbiotic bacteria recycle hydrogen produced during the nitrogen fixation process in legume nodules. Despite the described beneficial effect on plant productivity, the hydrogen oxidation capability is not widespread in the Rhizobiaceae family. Characterization of hydrogenase gene clusters in strains belonging to Rhizobium, Bradyrhizobium and Azorhizobium reveals a similar overall genetic organization along with important differences in gene regulation. In addition, phylogenetic analysis of hup genes indicates distinct evolutionary origins for hydrogenase genes in Rhizobia.
authors.affiliation: Laboratorio de Microbiología, E.T.S. Ingenieros Agrónomos, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain.
authors.forename: B
authors.initials: B
authors.lastname: Brito
authors.forename: C
authors.initials: C
authors.lastname: Baginsky
authors.forename: J M
authors.initials: JM
authors.lastname: Palacios
authors.forename: E
authors.initials: E
authors.lastname: Cabrera
authors.forename: T
authors.initials: T
authors.lastname: Ruiz-Argüeso
authors.forename: J
authors.initials: J
authors.lastname: Imperial
mesh_terms: D001419:Bacteria / Q000201:enzymology*; D007887:Fabaceae / Q000382:microbiology*; D006864:Hydrogenase / Q000235:genetics / Q000378:metabolism*; D005810:Multigene Family; D013045:Species Specificity; D013559:Symbiosis
chemical_list: D006864:Hydrogenase