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Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

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dc.contributor.authorPereira, S. I. A.
dc.contributor.authorBarbosa, L.
dc.contributor.authorCastro, P. M. L.
dc.date.accessioned2016-04-21T16:49:07Z
dc.date.available2016-04-21T16:49:07Z
dc.date.issued2015
dc.description.abstractIn this work, we evaluated the ability of rhizobacteria isolated from a metal-contaminated site to produce plant growth-promoting substances, such as indole-3-acetic acid (IAA), ammonia, hydrogen cyanide, siderophores and extracellular enzymes, to solubilize phosphate and for 1-aminocyclopropane-1-carboxylate (ACC)-deaminase activity, while assessing their capacity to enhance Trifolium repens growth. The rhizobacteria that better performed were used as bioinoculants for plants grown in zinc- and cadmium-spiked soils. Rhizobacteria were inoculated onto white clover seedlings growing in 250 and 500 mg kg(-1) of zinc and in 10 and 30 mg kg(-1) of cadmium-spiked soils and plant traits determined. The available and exchangeable rhizosphere metal concentrations were analyzed. Twenty rhizobacteria stimulated white clover growth under axenic conditions. Overall, strains Rhodococcus erythropolis EC 34, Achromobacter sp. 1AP2 and Microbacterium sp. 3ZP2 increased clover biomass in the absence and in presence of metals; however, in soils with 250 mg kg(-1) of zinc, bacterial inoculation did not enhance plant biomass. Biomass enhancement may be related to the multiple bacterial promoting traits, especially the production of high levels of IAA and siderophores and the activity of ACC-deaminase. To the best of our knowledge, this is the first study reporting the potential of R. erythropolis to increase plant growth in metal-contaminated soils. In general, strains Microbacterium sp. 3ZP2 and Arthrobacter sp. EC 10 enhanced the available and exchangeable metal concentrations in rhizosphere showing their potential to improve phytoremediation efficiency. This work clearly indicates that rhizobacteria are promising for the development of bioinoculants useful for phytoremediation of polluted soils.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationPEREIRA, S. I. A. ; BARBOSA, L. ; CASTRO, Paula M. L. - Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil. International Journal of Environmental Science and Technology. ISSN 1735-1472. Vol. 12, n.º 7 (2015), p. 2127-2142pt_PT
dc.identifier.doi10.1007/s13762-014-0614-z
dc.identifier.eid84930947463
dc.identifier.eissn1735-2630
dc.identifier.issn1735-1472
dc.identifier.urihttp://hdl.handle.net/10400.14/19944
dc.identifier.wos000355874000002
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer
dc.relationPTDC/AGR/CFL/111583/2009pt_PT
dc.subjectHeavy metalspt_PT
dc.subjectPlant growth promotionpt_PT
dc.subjectRhizobacteriapt_PT
dc.subjectWhite cloverpt_PT
dc.titleRhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soilpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PEst-OE%2FEQB%2FLA0016%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F65134%2F2009/PT
oaire.citation.endPage2142
oaire.citation.issue7
oaire.citation.startPage2127
oaire.citation.titleInternational Journal of Environmental Science and Technology
oaire.citation.volume12
oaire.fundingStream3599-PPCDT
oaire.fundingStreamSFRH
person.familyNamePereira
person.familyNameCastro
person.givenNameSofia
person.givenNamePaula
person.identifier2013444
person.identifier.ciencia-id3416-CFB7-17A6
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0002-5897-687X
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridH-4202-2016
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id15127794800
person.identifier.scopus-author-id7102781782
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationf2253992-dc8d-4042-9a0f-597ebcf0a1d6
relation.isAuthorOfPublication.latestForDiscoveryf2253992-dc8d-4042-9a0f-597ebcf0a1d6
relation.isProjectOfPublication76842dfa-b675-443a-843b-f9555a0a9199
relation.isProjectOfPublicationc2ea48f8-32b1-490a-8f7d-9c045d460a8c
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