Nodule growth and nitrogen fixation of Calopogonium mucunoides L. show low sensitivity to nitrate

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dc.contributor.authorCamargos, Liliane S. [UNESP]
dc.contributor.authorSodek, Ladaslav
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:47Z
dc.date.available2014-05-27T11:24:47Z
dc.date.issued2010-09-01
dc.description.abstractIt is well established that nitrate is a potent inhibitor of nodulation and nitrogen fixation in legumes. The objective of this study was to demonstrate the relative insensitivity of these processes to nitrate with Calopogonium mucunoides, a tropical South American perennial legume, native to the cerrado (savannah) region. It was found that nodule number was reduced by about half in the presence of high levels of nitrate (15 mM) but nodule growth (total nodule mass per plant) and nitrogen fixation (acetylene reduction activity and xylem sap ureide levels) were not affected. Other sources of N (ammonium and urea) were also without effect at these concentrations. At even higher concentrations (30 mM), nitrate did promote significant inhibition (ca. 50%) of acetylene reduction activity, but no significant reduction in xylem sap ureides was found. The extraordinary insensitivity of nodulation and N2 fixation of C. mucunoides to nitrate suggests that this species should be useful in studies aimed at elucidating the mechanisms of nitrate inhibition of these processes. © 2010 Springer Science+Business Media B.V.en
dc.description.affiliationDepartamento de Biologia Vegetal Instituto de Biologia UNICAMP, Campinas, SP 13083-970
dc.description.affiliationDepartamento de Biologia e Zootecnia Faculdade de Engenharia de Ilha Solteira Universidade Estadual Paulista (UNESP), Ilha Solteira, SP 15385-000
dc.description.affiliationUnespDepartamento de Biologia e Zootecnia Faculdade de Engenharia de Ilha Solteira Universidade Estadual Paulista (UNESP), Ilha Solteira, SP 15385-000
dc.format.extent167-174
dc.identifierhttp://dx.doi.org/10.1007/s13199-010-0063-5
dc.identifier.citationSymbiosis, v. 51, n. 2, p. 167-174, 2010.
dc.identifier.doi10.1007/s13199-010-0063-5
dc.identifier.issn0334-5114
dc.identifier.scopus2-s2.0-78149415549
dc.identifier.urihttp://hdl.handle.net/11449/71847
dc.language.isoeng
dc.relation.ispartofSymbiosis
dc.relation.ispartofjcr1.713
dc.relation.ispartofsjr0,600
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectCalopogonium mucunoides
dc.subjectN2 fixation
dc.subjectNitrate
dc.subjectNodulation
dc.subjectacetylene
dc.subjectammonium
dc.subjectconcentration (composition)
dc.subjectgrowth rate
dc.subjectinhibition
dc.subjectinhibitor
dc.subjectlegume
dc.subjectnitrate
dc.subjectnitrogen fixation
dc.subjectnodulation
dc.subjectperennial plant
dc.subjectsensitivity analysis
dc.subjecturea
dc.subjectGeorgia
dc.subjectSavannah
dc.subjectUnited States
dc.subjectDesmodium
dc.titleNodule growth and nitrogen fixation of Calopogonium mucunoides L. show low sensitivity to nitrateen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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