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| Registros recuperados: 32 | |
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| Cruz,Roberta; Ramos,Sérgio Murilo Sousa; Fonseca,Julyanna Cordoville; Motta,Cristina Maria de Souza; Moreira,Keila Aparecida. |
| ABSTRACT The Caatinga biome features an exclusive endemic biodiversity, and is characterized by the presence of xerophytic, deciduous vegetation, high temperatures, and low rainfall. This important park has undergone anthropization, especially through extraction of firewood and timber and growing plants for raising goats. The objectives of this study were to compare the communities of filamentous fungi present in the preserved area and in the anthropized soil of the Catimbau National Park in Buíque, PE, Brazil, and to evaluate the impacts of anthropization on such communities. A total of 12 collections of soil samples were made, six in the preserved area and six in the anthropic area, and the physicochemical properties of the soil samples were analyzed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Diversity; Aspergillus; Gongronella; Penicillium. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100419 |
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| Pimenta,Raphael S.; Silva,Francisco L.; Silva,Juliana F.M.; Morais,Paula B.; Braga,Danúbia T.; Rosa,Carlos A.; Corrêa Jr.,Ary. |
| In this study we evaluated the ability of Saccharomycopsis schoenii Nadson and Krassiln (UWO-PS 80-91) as biocontrol agent against plant pathogenic filamentous fungi P. expansum Link (UFMG 01-2002), P. italicum Wehmer (LCP 61.1199), and P. digitatum (Pers.: Fr.) (LCP 984263, LCP 68175 and LCP 4354). S. schoenii was able to reduce disease severity in oranges inoculated with all fungi. Among the phytopathogens, P. digitatum LCP4354 was the most virulent whereas P. digitatum LCP 68175 was the most susceptible to predation. The yeast was able to survive for 21 days on the fruit surface and did not produce lesions on oranges. Production of antagonistic substances by S. schoenii was not detected using standard techniques. Our results point to the potential use... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Orange; Postharvest disease; Penicillium; Saccharomycopsis schoenii. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100020 |
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| Hess, Philipp; Geiger, Marie; Brochard, Solène; Lepretre, Thomas; Fessard, Valerie; Antignac, Jean-philippe; Dupont, Jacques; Sechet, Veronique; Vanel, Faustine; Mondeguer, Florence; Herve, Fabienne; Leborgne, Sabrina; Deslanglois, Gwenaëlle; Marshall, Lindsey; Rounds, Lucy; Guitton, Yann; Amzil, Zouher; Grovel, Olivier; Ruiz, Nicolas; Pouchus, Francois. |
| Cette étude s’est inscrite dans un contexte d’évaluation de la salubrité des mollusques bivalves destinés à la consommation humaine. Ces organismes peuvent en effet accumuler des toxines, en particulier de microalgues, en concentrations importantes, pouvant induire des intoxications chez les personnes les consommant. Afin d’assurer la protection des consommateurs, les toxines réglementées sont recherchées dans les coquillages par techniques physico-chimiques. En parallèle, les toxines émergentes, potentiellement produites par d’autres organismes que les micro-algues telles que les micromycètes, peuvent être detectées par l’utilisation du test de toxicité aigüe sur souris. Cependant, ce bio-essai présente de très nombreux inconvénients, notamment éthiques... |
| Tipo: Text |
Palavras-chave: Cytotoxicité; Toxicité sur larves de diptères; Activité antibactérienne; Bactéries marines; Toxines lipophiles; Micro-algues; Dinoflagellés; Micromycètes; Penicillium; Acide okadaïque; Azaspiracide; Pinnatoxine G; Vulcanodinium rugosum; Prorocentrum lima; Azadinium spinosum; Beauveria brongniartii. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00253/36470/35015.pdf |
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| Geiger, Marie; Guitton, Yann; Vansteelandt, M.; Kerzaon, I.; Blanchet, Estelle; Du Pont, T. Robiou; Frisvad, J. C.; Hess, Philipp; Pouchus, Y. F.; Grovel, Olivier. |
| In order to assess the putative toxigenic risk associated with the presence of fungal strains in shellfish-farming areas, Penicillium strains were isolated from bivalve molluscs and from the surrounding environment, and the influence of the sample origin on the cytotoxicity of the extracts was evaluated. Extracts obtained from shellfish-derived Penicillia exhibited higher cytotoxicity than the others. Ten of these strains were grown on various media including a medium based on mussel extract (Mytilus edulis), mussel flesh-based medium (MES), to study the influence of the mussel flesh on the production of cytotoxic compounds. The MES host-derived medium was created substituting the yeast extract of YES medium by an aqueous extract of mussel tissues, with... |
| Tipo: Text |
Palavras-chave: Cytotoxicity; Dereplication; Marine fungi; Mass spectrometry; Penicillium; Shellfish. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00160/27166/25523.pdf |
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| MELO, I. S. de; SILVA, C. M. M. de S.; FAY, E. F.; MONTEIRO, R. R.; ROSAMIGLIA, A. C.. |
| Atrazina é um dos herbicidas mais utilizados no mundo, apresentando relativa persistência em zonas saturadas e insaturadas. A principal via de dissipação de atrazina inclui a biodegradação. Solos coletados no município de Guaíra, SP, provenientes de áreas de mata, e solos sob cultivo intensivo, sob irrigação, com histórico de aplicação de atrazina, foram suplementados e incubados com o herbicida nas seguintes concentrações:70 microgramas g-1, 350 microgramas g-1 700 microgramas g-1. Após diluição em série, procedeu-se ao plaqueamento em meio de cultura (meio de Martin), também suplementado com o herbicida (700~g g ' l). Os fungos selecionados nesta fase foram cultivados em meio líquido de batata- dextrose (50%) suplementado com 700 microgramas mL-1 de... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Herbicida; Microrganismo; Atrazina; Biodegradação; Penicillium; Atrazine; Herbicides; Biodegradation. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1026398 |
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| Moreno Pérez,P; Gamboa Angulo,M; Heredia,G; Canto Canché,B; Rodríguez García,CM; Medina Baizabal,IL; Peraza Echeverría,L. |
| En la actualidad, es altamente necesario encontrar nuevos y más seguros productos agroquímicos. En este sentido, los micromicetos son una fuente importante de productos naturales los cuales pueden ser usados en el control de enfermedades vegetales. Con el objetivo de contribuir a la búsqueda de productos con aplicaciones antimicrobianas, un total de 49 cepas fúngicas fueron aisladas de dos cenotes de la península de Yucatán. Estas cepas se cultivaron en arroz fermentado, se obtuvieron sus respectivos extractos orgánicos macerados en acetato de etilo (EAE) y metanol (EM) y se evaluaron contra cinco fitopatógenos de importancia agrícola. Estos patógenos incluyeron a los hongos Alternaria chrysanthemi, Colletotrichum gloeosporioides, Mycosphaerella fijiensis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioensayos; Extractos fúngicos; Fusarium; Hypocrea; Micromicetos; Penicillium; Cenotes. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100003 |
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| ALVARES, V. de S.; SOUZA, J. M. L. de; MACEDO, P. E. F. de; SILVA, L. B. da; SANTOS, E. S. H.; VASCONCELOS, M. A. M. de. |
| O descascamento manual das amêndoas de cupuaçu foi citado na literatura científica, mas não há relato dos fungos associados durante seu posterior armazenamento. Este trabalho teve como objetivo relatar a incidência de fungos em amêndoas de cupuaçu fermentadas e armazenadas em sacos de ráfia à temperatura ambiente por 75 dias. Amêndoas fermentadas e secas foram submetidas a diferentes tratamentos (T1 = sem despeliculação e T2 = com despeliculação), ambos armazenados em sacos de ráfia à temperatura ambiente por 75 dias. Antes do armazenamento e a cada 15 dias, as amêndoas foram analisadas quanto à detecção de fungos. Foram identificados seis gêneros de fungos e três espécies de Aspergillus nas amêndoas armazenadas, com maior frequência de Aspergillus... |
| Tipo: Parte de livro |
Palavras-chave: Almendras; Fermentación; Projeto RECA; Secado; Condiciones de almacenamiento; Nova Califórnia (RO); Extrema (RO); Rondônia; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Cupuaçu; Theobroma Grandiflorum; Amêndoa; Fermentação; Secagem; Armazenamento; Fungo; Curvularia Lunata; Almonds; Fermentation; Drying; Storage conditions; Fungi; Acremonium; Geotrichum; Penicillium. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125452 |
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| Pimenta,R. S.; Silva,J. F. M.; Coelho,C. M.; Morais,P. B.; Rosa,C. A.; Corrêa Jr,A.. |
| Our investigation of integrated biological control (IBC) started with an assay testing activity of the predacious yeast Saccharomycopsis crataegensis UFMG-DC19.2 against Penicillium digitatum LCP 4354, a very aggressive fungus that causes postharvest decay in oranges. Under unfavourable environmental conditions, the yeast showed a high potential for control (39.9% disease severity reduction) of this fungus. This result was decisive for the next step, in which S. crataegensis was tested in association with sodium bicarbonate salt, a generally regarded as safe (GRAS) substance. The yeast was able to survive at different concentrations of the salt (1%, 2% and 5%), and continued to grow for a week at the wound site, remaining viable at high population for 14... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Saccharomycopsis; Penicillium; Postharvest disease; Orange. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200022 |
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| Varavallo,Maurilio Antonio; Queiroz,Marisa Vieira de; Lana,Taís Guimarães; Brito,Admilson Toscano Ribeiro de; Gonçalves,Daniel Bonoto; Araújo,Elza Fernandes de. |
| Protoplast fusion between complementary auxotrophic and morphological mutant strains of Penicillium griseoroseum and P. expansum was induced by polyethylene glycol and calcium ions (Ca2+). Fusant strains were obtained in minimal medium and a prototrophic strain, possibly diploid, was chosen for haplodization with the fungicide benomyl. Different recombinant strains were isolated and characterized for occurrence of auxotrophic mutations and pectinolytic enzyme production. The fusant prototrophic did not present higher pectinase production than the parental strains, but among 29 recombinants analyzed, four presented enhanced enzyme activities. The recombinant RGE27, which possesses the same auxotrophic and morphologic mutations as the P. griseoroseum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protoplast fusion; Pectinases; Penicillium. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100011 |
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| FRANCO, D. A. S.; BETTIOL, W.. |
| O metodo do tecido do flavedo, que consiste em colocar, discos de 12 mm de diametro de flavedo de laranja sobre laminas de microscopia plana, foi comparado aos de epiderme destacada de cebola; de laminas de microscopia plana, recobertas ou nao com poliestireno e agar-agua e laminas escravadas, para avaliar a germinacao de conidios de Penicillium digitatum. Na realizacao dos testes, foram colocadas, sobre os diferentes materiais, tres gotas de 20 uL de suspensao de inoculo (1x10 5 conidios/mL), exceto para as escavadas, e a seguir mais 20 uL de agua destilada esterilizada. A incubacao dos conjuntos, em cinco repeticoes, foi em camara umida a 25oC. Transcorridas 18, 19, 20 21 e 22 horas da incubacao, foi adicionada uma gota azul de lactofenol e realizada a... |
| Tipo: Parte de livro |
Palavras-chave: Conídios; Citricos; Penicillium. |
| Ano: 1999 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/13124 |
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| Garcia,Marcelo Valle; Moraes,Vivian Machado; Bernardi,Angélica Olivier; Oliveira,Maurício Schneider; Mallmann,Carlos Augusto; Boscardin,Jardel; Copetti,Marina Venturini. |
| ABSTRACT: In recent years, Brazil has encouraged the cultivation of pecans to meet both demands of domestic and international market of nuts. New genetic varieties of pecans have been selected in recent years, but available scientific information on the occurrence of fungi and aflatoxins in the international literature is out of date. Therefore, the present study aimed to quantify and identify fungal microbiota and the presence of aflatoxins in pecan nuts cultivated in southern Brazil. Fifty-two pecan nut lots (Barton variety) were obtained from producers from 19 cities of Rio Grande do Sul State and analyzed by direct plating in Agar Dichloran Glycerol 18% (DG18) and Aspergillus Flavus and Parasiticus Agar (AFPA), following incubation at 25 °C for 7... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus; Penicillium; Mycotoxin; Rio Grande do Sul; Carya illinoinensis.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600752 |
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| Petit,Philippe; Lucas,Esther M. F.; Abreu,Lucas M; Pfenning,Ludwig H; Takahashi,Jacqueline A. |
| The morphological features of a Penicillium, isolated from Brazilian cerrado soil, were characterized and showed to be distinctly different from all well-defined Penicillium species. Chemical and biological investigation on the ethyl acetate extract of this Penicillium isolate resulted in the isolation of three new naphthalenoids: a major metabolite, methyl 6-acetyl-4-methoxy-5,7,8-trihydroxynaphthalene-2-carboxylate and two minor ones, methyl 6-acetyl-4-methoxy-7,8-dihydroxynaphthalene-2-carboxylate and methyl 6-acetyl-4-methoxy-5,8-dihydroxynaphthalene-2-carboxylate. Their structures were determined based on their mono and bidimensional nuclear magnetic resonance data. Acetyl, allyl and methoxyl derivatives of the major metabolite were prepared in order... |
| Tipo: Journal article |
Palavras-chave: Antibacterial activity; Cerrado; Naphthalenoids; Penicillium; Secondary metabolites. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400008 |
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| Registros recuperados: 32 | |
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