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Rhizobacterial communities associated with the flora of three serpentine outcrops of the Iberian Peninsula

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dc.contributor.authorÁlvarez-López, Vanessa
dc.contributor.authorPrieto-Fernández, Ángeles
dc.contributor.authorBecerra-Castro, Cristina
dc.contributor.authorMonterroso, Carmela
dc.contributor.authorKidd, Petra S.
dc.date.accessioned2016-04-21T11:40:30Z
dc.date.available2016-04-21T11:40:30Z
dc.date.issued2016
dc.description.abstractAim Plant -associated bacteria can improve phytoextraction by increasing plant growth and/or metal uptake. This study aimed to characterise the culturable rhizobacterial community associated with two Nihyperaccumulators and to obtain a collection of isolates for application in Ni phytomining. Methods Non-vegetated and rhizosphere soil samples were collected from the Ni-hyperaccumulator Alyssum serpyllifolium ssp. lusitanicum (three populations) and Alyssum serpyllifolium ssp. malacitanum (one population), as well as from non-hyperaccumulating plants (Dactylis glomerata, Santolina semidentata and Alyssum serpyllifolium ssp. serpyllifolium). Rhizobacteria were isolated and characterised genotypically (BOX-PCR, 16S rDNA sequencing) and phenotypically (Ni tolerance, plant growth promoting (PGP) traits, biosurfactant production). Results Hyperaccumulating Alyssum subspecies hosted higher densities of bacteria compared to either nonhyperaccumulators or non-vegetated soil. In some cases hyperaccumulators showed selective enrichment of Nitolerant bacteria. Most bacterial strains belonged to the Actinobacteria phylum and presented Ni resistance. Phosphorus-solubilisers were mostly associated with the hyperaccumulators, siderophore-producers with D. glomerata, and IAA-producers with both these species. Conclusion Taxonomic diversity and phenotypic characteristics were soil-, plant species- and plant population- specific. Moreover, differences were observed between the two Ni-hyperaccumulating subspecies and amongst plant populations. Several strains presented PGP characteristics which could be useful when selecting microorganisms for bioaugmentation trials.pt_PT
dc.description.sponsorshipThis research was supported by the Spanish Ministerio de Economía y Competitividad (CTM2012-39904- C02-01) and FEDER, and by the 7th Framework Program of the European Commission (FP7-KBBE-266124, GREENLAND).pt_PT
dc.identifier.citationÁLVAREZ-LÓPEZ, Vanessa; PRIETO-FERNÁNDEZ, Ángeles; BECERRA-CASTRO, Cristina; MONTERROSO, Carmela; KIDD, Petra S. - Rhizobacterial communities associated with the flora of three serpentine outcrops of the Iberian Peninsula. Plant and Soil. ISSN 0032-079X (2016), vol. 403, nº1-2, p.233-252. DOI 10.1007/s11104-015-2632-0pt_PT
dc.identifier.doi10.1007/s11104-015-2632-0
dc.identifier.eid84941350667
dc.identifier.urihttp://hdl.handle.net/10400.14/19886
dc.identifier.wos000377452500014
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer
dc.subjectAlyssum serpyllifoliumpt_PT
dc.subjectHyperaccumulatorspt_PT
dc.subjectNickelpt_PT
dc.subjectPlant-associated bacteriapt_PT
dc.subjectPGP traitspt_PT
dc.subjectBacterial diversitypt_PT
dc.subjectPhytoextractionpt_PT
dc.titleRhizobacterial communities associated with the flora of three serpentine outcrops of the Iberian Peninsulapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage252
oaire.citation.startPage233
oaire.citation.titlePlant and Soil
oaire.citation.volume403
person.familyNameÁlvarez-López
person.familyNamePrieto-Fernandez
person.familyNameMonterroso Martínez
person.familyNameKidd
person.givenNameVanessa
person.givenNameAngeles
person.givenNameMaría del Carmen
person.givenNamePetra
person.identifier723076
person.identifier.orcid0000-0002-2969-0602
person.identifier.orcid0000-0003-2601-1528
person.identifier.orcid0000-0001-9309-5405
person.identifier.orcid0000-0002-1721-7367
person.identifier.scopus-author-id45561127000
person.identifier.scopus-author-id55881904500
person.identifier.scopus-author-id6603422978
person.identifier.scopus-author-id7101624095
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication84759320-f068-4943-833d-0382e40018a0
relation.isAuthorOfPublicationc2eba761-d470-472f-b651-3548a4789eb9
relation.isAuthorOfPublicationb495881c-40fa-4d0e-99ec-f538b0f5f283
relation.isAuthorOfPublication54e2d1fe-f33c-4267-bbe1-0e3dd6e8a46e
relation.isAuthorOfPublication.latestForDiscovery84759320-f068-4943-833d-0382e40018a0

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