Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/984907
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dc.contributor.authorNAKATANI, A. S.pt_BR
dc.contributor.authorFERNANDES, M. F.pt_BR
dc.contributor.authorSOUZA, R. A. dept_BR
dc.contributor.authorSILVA, A. P. dapt_BR
dc.contributor.authorREIS-JUNIOR, F. B. dospt_BR
dc.contributor.authorMENDES, I. C.pt_BR
dc.contributor.authorHUNGRIA, M.pt_BR
dc.contributor.otherANDRÉ SHIGUEYOSHI NAKATANI, Fundação Araucária - Pós-doctor; MARCELO FERREIRA FERNANDES, CPATC; ROSINEI APARECIDA DE SOUZA, IAPAR; ADRIANA PEREIRA DA SILVA, Fundação Araucária - Pós-doctor; FABIO BUENO DOS REIS JUNIOR, CPAC; IEDA DE CARVALHO MENDES, CPAC; MARIANGELA HUNGRIA DA CUNHA, CNPSO.pt_BR
dc.date.accessioned2014-04-24T22:38:29Z-
dc.date.available2014-04-24T22:38:29Z-
dc.date.created2014-04-22pt_BR
dc.date.issued2014pt_BR
dc.identifier.other35123pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/984907pt_BR
dc.descriptionGlyphosate, a broad-spectrum herbicide used for the non-selective control of weeds, inhibits 5-enolpyruvylshikimate-3-phosphate synthase, a key enzyme in the synthesis of aromatic amino acidsin the shikimic acid pathway in plants, fungi and bacteria, thus impairing the synthesis of proteinsrequired for various life processes. Soybean genetically engineered to be glyphosate resistant (GR orRoundup Ready, RR) represents the most cultivated transgenic crop globally, including Brazil. There areconcerns about the effects of RR transgenic soybean and of glyphosate on soil microbial communitiesand their functioning. Our study was designed to detect changes in soil microbial biomass-carbon (MB-C) and -nitrogen (MB-N) and in enzyme activities [beta-glucosidase (GLU) and acid phosphatase (PHO)]in a large set of field trials performed at six sites in Brazil for two cropping seasons. We evaluated theeffects of the RR transgene, glyphosate and weed management (RR soybean + glyphosate vs. conventionalsoybean + conventional herbicides), with three pairs of nearly isogenic soybean cultivars evaluated persite. Soils were sampled from the 0?10 cm layer, between cropped lines, during the cropping seasons2004/2005 and 2005/2006, at the R2 stage of soybean growth. Univariate and contrast analyses wereperformed in addition to multivariate analyses including all four microbial variables, and denominatedas soil microbial variables (SMV). In general, microbial parameters and SMV were not affected by thetransgene, type of herbicide or weed management. Differences were, rather, related to site, croppingseason and cultivar.pt_BR
dc.description.uribitstream/item/101304/1/nakatani.pdfpt_BR
dc.languageenpt_BR
dc.language.isoengeng
dc.publisherField Crops Research, v. 162, p. 20-29, 2014.pt_BR
dc.relation.ispartofEmbrapa Soja - Artigo em periódico indexado (ALICE)pt_BR
dc.rightsopenAccesspt_BR
dc.titleEffects of the glyphosate-resistance gene and of herbicides applied to the soybean crop on soil microbial biomass and enzymes.pt_BR
dc.typeArtigo em periódico indexado (ALICE)pt_BR
dc.date.updated2014-04-24T22:38:29Zpt_BR
dc.subject.thesagroSoja.pt_BR
dc.ainfo.id984907pt_BR
dc.ainfo.lastupdate2014-04-22pt_BR
Appears in Collections:Artigo em periódico indexado (CNPSO)

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