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Endophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activities

2016Journal article Restricted access
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dc.contributor.authorPereira, S.I.A.
dc.contributor.authorMonteiro, Cristina M.
dc.contributor.authorVega, A. L.
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2016-04-21T08:57:12Z
dc.date.available2016-04-21T08:57:12Z
dc.date.issued2016
dc.description.abstractAromatic plants such as lavender are stirring the attention of many researchers due to their content in bioactive secondary metabolites that can be used in traditional medicine. However, information regarding naturally occurring lavender associated bacterial endophytes (BE) is limited. To the best of our knowledge, this is the first study which aims to assess the phylogenetic diversity of the culturable endophytic bacteria of Lavandula dentata cultivated under organic management and to evaluate their potential as plant growth promoting (PGP) agents. BE were grouped by random amplified polymorphic DNA and identified by 16S ribosomal RNA gene sequencing. Endophytes were further characterized for the ability to produce several PGP substances, like ammonia, siderophores, indol-3-acetic acid, and hydrogen cyanide and for the ability to solubilize phosphate. Plant cell-wall degrading enzymes were also determined. Densities of BE were higher in roots (log 6.39 CFU g−1 fresh weight) than in shoots (log 5.56 CFU g−1 fresh weight). Phylogenetic analysis showed that BE were affiliated to two major groups: -Proteobacteria (50%) and Firmicutes (31.6%) and a small part belonged to - (7.9%) and -Proteobacteria (10.5%), being Pseudomonas and Bacillus the most highly represented genera. Higher bacterial diversity was found in the lavender roots, with endophytes belonging to 6 different genera (Pseudomonas, Variovorax, Rhizobium, Caulobacter, Bacillus and Paenibacillus), than in shoots where only 3 genera (Bacillus, Pseudomonas and Xanthomonas) were found. Overall, BE showed ability to produce extracellular enzymes and multiple PGP traits, suggesting their potential use as efficient bioinoculants in sustainable cultivation of medicinal and aromatic plants.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationPEREIRA, S.I.A.; MONTEIRO, Cristina M.; VEGA, A.L.; CASTRO, Paula M. L. - Endophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activities. Ecological Engineering. ISSN 0925-8574. Vol. 87 (2016), p. 91-97 http://dx.doi.org/10.1016/j.ecoleng.2015.11.033 [short communication]pt_PT
dc.identifier.doi10.1016/j.ecoleng.2015.11.033pt_PT
dc.identifier.eid84949209473
dc.identifier.urihttp://hdl.handle.net/10400.14/19868
dc.identifier.wos000368899800011
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationPTDC/AGR/CFL/111583/2009pt_PT
dc.relationStrategic Project - LA 16 - 2011-2012
dc.subjectEndophytic bacteriapt_PT
dc.subjectDiversitypt_PT
dc.subjectIndol-3-acetic acidpt_PT
dc.subjectLavenderpt_PT
dc.subjectPlant growth promotionpt_PT
dc.titleEndophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activitiespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - LA 16 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FEQB%2FLA0016%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F65134%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F80885%2F2011/PT
oaire.citation.endPage97
oaire.citation.startPage91
oaire.citation.volume87
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamSFRH
oaire.fundingStreamSFRH
person.familyNamePereira
person.familyNameMonteiro
person.familyNameLópez Vega
person.familyNameCastro
person.givenNameSofia
person.givenNameCristina
person.givenNameAlberto
person.givenNamePaula
person.identifier2013444
person.identifier.ciencia-id3416-CFB7-17A6
person.identifier.ciencia-id691A-CDC0-2C9B
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0002-5897-687X
person.identifier.orcid0000-0002-5668-8153
person.identifier.orcid0000-0001-8473-3292
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-id26029962100
person.identifier.scopus-author-id7102781782
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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