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| Guerra,Felipe Q.S.; Araújo,Rodrigo S.A.; Sousa,Janiere P.; Silva,Viviane A.; Pereira,Fillipe O.; Mendonça-Junior,Francisco J.B.; Barbosa-Filho,José M.; Pereira,Julio Abrantes; Lima,Edeltrudes O.. |
| Abstract Fungal infections have become a concern for health professionals, and the emergence of resistant strains has been reported for all known classes of antifungal drugs. Among the fungi causing disease, we highlight those that belong to the genus Aspergillus. For these reasons, the search for new antifungals is important. This study examines the effects of a coumarin derivative, 4-acetatecoumarin (Cou-UMB16) both alone and together with antifungal drugs, and its mode of action against Aspergillus spp. Cou-UMB16 was tested to evaluate its effects on mycelia growth, and germination of Aspergillus spp. fungal conidia. We investigated its possible action on cell walls, on the cell membrane, and also the capacity of this coumarin derivative to enhance the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coumarin; Antifungal activity; A. flavus; A. fumigatus; Mode of action. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200407 |
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| Todorov,Svetoslav D.. |
| Bacteriocins are biologically active proteins or protein complexes that display a bactericidal mode of action towards usually closely related species. Numerous strains of bacteriocin producing Lactobacillus plantarum have been isolated in the last two decades from different ecological niches including meat, fish, fruits, vegetables, and milk and cereal products. Several of these plantaricins have been characterized and the aminoacid sequence determined. Different aspects of the mode of action, fermentation optimization and genetic organization of the bacteriocin operon have been studied. However, numerous of bacteriocins produced by different Lactobacillus plantarum strains have not been fully characterized. In this article, a brief overview of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactobacillus plantarum; Plantaricin; Mode of action; Genetic organization. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200001 |
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| Catalani,Gabriela C.; Sousa,Kátia K.A.; Camargo,Roberto S. da; Caldato,Nadia; Matos,Carlos A.O.; Forti,Luiz C.. |
| ABSTRACT Leaf-cutting ants are controlled with toxic baits. For the method’s greater efficiency, the baits must be distributed and processed by workers during fungus cultivation. To test hypotheses whether the mode of action of the active ingredients, which blocks the sodium channels and interrupts the production of ATP in the mitochondria, interferes with fragment distribution in nests; the dispersion of pellets fragments during fungus cultivation by workers was assessed, spatially referencing the fragment onto the fungus garden. Pellets fragments were randomly distributed, but the amount pellets fragments was influenced by the way that the active ingredient acts in the colony. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atta sexdensbehavior; Indoxacarb; Mode of action; Sulfluramid. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000400290 |
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| CARVALHO,S.J.P.; ROSSI,C.V.S.; MELO,M.S.C.; CHRISTOFFOLETI,P.J.; KAGI,F.Y.. |
| ABSTRACT: The challenge of managing herbicide-resistant weeds is an agricultural reality in Brazil that shall not be neglected. In this sense, Ministério da Agricultura, Pecuária e Abastecimento (MAPA) published Act No. 45 on July 14, 2017, provides the inclusion of a code system on labels and leaflets of insecticides, fungicides and herbicides, in order to demonstrate the mode of action of the active ingredient present in the product. In case of mix formulations, both molecules must be discriminated, adopting the same “Herbicide Resistance Action Committee - HRAC” international reference code. The Act No. 45 facilitates the process to choose and adopt products by all those involved in the chain production. It also collaborates with the possible to... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Mode of action; Mixtures; Pesticides; Label; Leaflets. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100601 |
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| TAKAKI,MASSANORI. |
| The paper proposes the classification of seeds in relation to the forms of phytochrome instead of classical photoblastism. On the basis of published data all seeds have phytochrome and the term photoblastism should be replaced by forms of phytochrome that control germination: 1. Positive photoblastic seeds have phyB (and, to a lesser extent, phyD and phyE) controlling the germination process through Low Fluence Responses (LFR); 2. Negative photoblastic seeds have phyA controlling germination through High Irradiance Responses (HIR) and, when the pre-existing Pfr level is high enough to induce germination in darkness, through LFR by phyB; and 3. light insensitive seeds have phyA controlling germination through Very Low Fluence Responses (VLFR). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed classification; Photoblastism; Phytochrome forms; Mode of action. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100011 |
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| Lopes Ovejero,R.F.; Soares,D.J.; Oliveira,W.S.; Fonseca,L.B.; Berger,G.U.; Soteres,J.K.; Christoffoleti,P.J.. |
| In agricultural production systems where the glyphosate-resistant soybean crop (Glycine max) is grown and the practice of crop rotation with alternative herbicides is not adopted, the exclusive and continuous use of glyphosate has led to the occurrence of resistant weed populations that may limit or compromise the benefits of this technology. Thus, the efficacy of weed management programs, including the use of residual herbicides (sulfentrazone, flumioxazin, imazethapyr, diclosulan, chlorimuron and s-metolachlor) applied in preemergence and followed by in-crop postemergence applications of glyphosate (PRE-POST) were compared to glyphosate postemergence only programs - POST. The study was conducted across nine locations during the 2009/2010 and 2010/2011... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide resistance management; Mode of action; Residual herbicides; Weed management programs; Preemergence; Postemergence. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400021 |
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