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Comparative study of the microbial diversity of bulk paddy soil of two rice fields subjected to organic and conventional farming

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dc.contributor.authorLopes, Ana R.
dc.contributor.authorFaria, Cátia
dc.contributor.authorPrieto-Fernández, Ángeles
dc.contributor.authorTrasar-Cepeda, Carmen
dc.contributor.authorManaia, Célia M.
dc.contributor.authorNunes, Olga C.
dc.date.accessioned2012-02-27T15:30:41Z
dc.date.available2012-02-27T15:30:41Z
dc.date.issued2011
dc.description.abstractTwo adjacent paddies of an experimental rice field, subjected to organic and conventional farming, were characterized aiming the comparative assessment of microbiological variations occurring in the bulk paddy soil over the rice cycle. This study comprehended the simultaneous characterization of general physicochemical soil properties [total carbon and nitrogen, pH (H2O and KCl), C:N ratio and water content], biochemical properties [enzymatic activities and Community Level Physiological Profiles (CLPP)], the estimation of cultivable organisms (enumeration of fast growing heterotrophic bacteria, actinomycetes and fungi) and the assessment of bacterial diversity using a culture-independent method (PCR-DGGE fingerprinting). The linkage of the parameters measured was analysed by canonical correspondence analysis (CCA). CCA ordination plots of the CLPP showed a similar pattern of microbial functional activity in both agronomic management systems, except in June. Enzymatic activity, water content and fungi counts were the main factors affecting the observed CLPP time variation. Such a variation was not expressed by the Shannon and evenness indices, which did not evidence significant differences in the bacterial and functional diversity between or within farming type over the analysed period. The cluster and CCA analyses of the DGGE profiles allowed the distinction of the bacterial communities of both paddies, with temporal variations being observed in the organically managed field but not in the conventional paddy. Enzymatic activity, pH and molinate content were the factors which most contributed to the observed variations. Altogether these results underline the functional redundancy of the rice paddy soil and evidence the temporal variations on the metabolic activity of soil, irrespective of farming type.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationLOPES, Ana R... [et al.] - Comparative study of the microbial diversity of bulk paddy soil of two rice fields subjected to organic and conventional farming. Soil Biology & Biochemistry. ISSN 0038-0717. Vol. 43, n.º1 (2011), p. 115-125por
dc.identifier.doi10.1016/j.soilbio.2010.09.021
dc.identifier.issn0038-0717
dc.identifier.urihttp://hdl.handle.net/10400.14/7953
dc.identifier.wosWOS:000285219200013
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relationCTM2006-13862-C02-02
dc.relationBioremediation of soils and waters contaminated with pesticides
dc.subjectCultivable microbial countspor
dc.subjectSoil enzymatic activitypor
dc.subjectCLPPpor
dc.subjectDGGE fingerprintingpor
dc.subjectBacterial community diversitypor
dc.subjectAgronomic managementpor
dc.titleComparative study of the microbial diversity of bulk paddy soil of two rice fields subjected to organic and conventional farmingpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBioremediation of soils and waters contaminated with pesticides
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FAMB%2F59836%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F44876%2F2008/PT
oaire.citation.endPage125
oaire.citation.issue1
oaire.citation.startPage115
oaire.citation.titleSoil Biology and Biochemistry
oaire.citation.volume43
oaire.fundingStreamPOCI
oaire.fundingStreamSFRH
person.familyNameLopes
person.familyNamePrieto-Fernandez
person.familyNameTrasar-Cepeda
person.familyNameManaia
person.familyNameNunes
person.givenNameAna
person.givenNameAngeles
person.givenNameCarmen
person.givenNameCélia
person.givenNameOlga
person.identifier.ciencia-id8E16-04A1-8765
person.identifier.ciencia-idC31F-553B-6365
person.identifier.ciencia-idBA14-BD30-C9AF
person.identifier.orcid0000-0001-9634-3304
person.identifier.orcid0000-0003-2601-1528
person.identifier.orcid0000-0001-9019-5590
person.identifier.orcid0000-0002-3674-1789
person.identifier.orcid0000-0003-4742-2537
person.identifier.scopus-author-id8617740100
person.identifier.scopus-author-id55881904500
person.identifier.scopus-author-id56320253900
person.identifier.scopus-author-id6602465318
person.identifier.scopus-author-id7005088596
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.rightsrestrictedAccesspor
rcaap.typearticlepor
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