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Use este identificador para citar o ir al link de este elemento: http://hdl.handle.net/1843/77306
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Campo DCValorIdioma
dc.creatorDandara Rêgo Muniz da Silvapt_BR
dc.creatorJanaina dos Santos Garciapt_BR
dc.creatorTaniris Cafiero Bragapt_BR
dc.creatorÂngelo de Fátimapt_BR
dc.creatorLuzia Valentina Modolopt_BR
dc.date.accessioned2024-10-08T17:00:12Z-
dc.date.available2024-10-08T17:00:12Z-
dc.date.issued2019-
dc.citation.volume17pt_BR
dc.citation.spage95pt_BR
dc.citation.epage102pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jare.2019.01.017pt_BR
dc.identifier.issn2090-1232pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/77306-
dc.description.resumoInvasive species (weeds) contribute to great losses in crop productivity, and one of the strategies for controlling their distribution in the field involves the use of herbicides. However, the development of new formulations for the control of weeds is challenged by environmental issues, increases in the resistance of weeds to herbicides, and poor selectivity of herbicides towards invasive species. Here, by using pre-emergence experiments, we assessed the phytotoxicity of two (thio)urea analogues (2A10 and 2B2) against the weed species Bidens pilosa (a dicot), Urochloa brizantha and Urochloa decumbens (monocots). Similar to diuron (400 µM), which is a commercial urea analogue herbicide, the urea analogue 2A10 (>200 µM) was lethal to B. pilosa. Although 2A10 failed to disrupt the germination of U. brizantha seeds, this compound (≥600 µM) inhibited the accumulation of chlorophyll a and b and carotenoids and resulted in the development of seedlings that presented relatively short roots and small, chlorotic leaves. Moreover, the thiourea analogue 2B2 (≥600 µM) reduced the germination percentage of U. decumbens seeds and delayed their germination, and at a concentration of 800 µM, this analogue impaired root growth and blocked the formation of lateral roots. The presence of an oxygen atom in the urea moiety of the 2A10 structure is critical for its marked activity against B. pilosa seeds, as 2B2 bears a sulphur atom instead and marginally inhibits seed germination. Neither 2A10 nor 2B2 was toxic to the non-weed species Lactuca sativa (lettuce; a dicot), and the latter even exerted beneficial effects by stimulating leaf expansion. Therefore, the evaluated (thio)urea analogues are promising for the design and development of new phytotoxic compounds for the pre-emergent control of the spread of B. pilosa (2A10) or the post-emergence control of U. brizantha (2A10) and U. decumbens (2B2).pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Advanced Researchpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectBiginelli adductspt_BR
dc.subjectSelective herbicidespt_BR
dc.subjectBidens pilosapt_BR
dc.subjectUrochloa speciespt_BR
dc.subjectWeed speciespt_BR
dc.subject.otherBotânicapt_BR
dc.subject.otherHerbicidaspt_BR
dc.subject.otherErva daninha - Controlept_BR
dc.subject.otherPlantas invasoraspt_BR
dc.subject.otherTiouréiapt_BR
dc.titlePre-emergence application of (thio)urea analogues compromises the development of the weed species bidens pilosa, urochloa brizantha and urochloa decumbenspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S2090123219300177pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4176-2290pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4032-0100pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2344-5590pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8033-0434pt_BR
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