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| Registros recuperados: 348 | |
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| Petit, Vanessa W.; Rolland, Jean-luc; Blond, Alain; Cazevieille, Chantal; Djediat, Chakib; Peduzzi, Jean; Goulard, Christophe; Bachere, Evelyne; Dupont, Joelle; Destoumieux-garzon, Delphine; Rebuffat, Sylvie. |
| Background. Hemocyanins are respiratory proteins with multiple functions. In diverse crustaceans hemocyanins can release histidine-rich antimicrobial peptides in response to microbial challenge. In penaeid shrimp, strictly antifungal peptides are released from the C-terminus of hemocyanins. Methods. The three-dimensional structure of the antifungal peptide PvHCt from Litopenaeus vannamei was determined by NMR. Its mechanism of action against the shrimp pathogen Fusarium oxysporum was investigated using immunochemistry, fluorescence and transmission electron microscopy. Results. PvHCt folded into an amphipathic α-helix in membrane-mimicking media and displayed a random conformation in aqueous environment. In contact with F. oxysporum, PvHCt bound... |
| Tipo: Text |
Palavras-chave: Antimicrobial peptide; Amphipathic helix; Fungi; Membrane bilayer; Nuclear magnetic resonance (NMR); Fluorescence microscopy. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00301/41202/40362.pdf |
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| Burgdorf,R.J.; Laing,M.D.; Morris,C.D.; Jamal-Ally,S.F.. |
| Extraneous DNA interferes with PCR studies of endophytic fungi. A procedure was developed with which to evaluate the removal of extraneous DNA. Wheat (Triticum aestivum) leaves were sprayed with Saccharomyces cerevisiae and then subjected to physical and chemical surface treatments. The fungal ITS1 products were amplified from whole tissue DNA extractions. ANOVA was performed on the DNA bands representing S. cerevisiae on the agarose gel. Band profile comparisons using permutational multivariate ANOVA (PERMANOVA) and non-metric multidimensional scaling (NMDS) were performed on DGGE gel data, and band numbers were compared between treatments. Leaf surfaces were viewed under variable pressure scanning electron microscopy (VPSEM). Yeast band analysis of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endophyte; Fungi; DNA; Surface sterilization. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300030 |
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| Donald, Julian; Roy, Mélanie; Suescun, Uxue; Iribar, Amaia; Manzi, Sophie; Péllissier, Léonie; Gaucher, Philippe; Chave, Jérôme. |
| 1.Community assembly theory assumes that ecological communities are spatially delimited into patches. Within these patches, coexistence results from environmental filtering, competition, and immigration. Truly delineated communities exist in laboratory studies of microbial cultures in Petri dishes, yet empirical tests conducted in continuous environments often use patches defined by convention as opposed to realised boundaries. 2.Here we perform a test of ecological community assembly rules using foliar endophyte communities from a tropical rainforest, where leaves are considered as patches for both fungal and bacterial communities. We determined the diversity of fungal and bacterial endophytes using environmental DNA sequencing of 365 top‐canopy leaves,... |
| Tipo: Text |
Palavras-chave: Bacteria; Distribution; French Guiana; Fungi; Metabarcoding; Plant–pathogen interactions; Rainforest. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00606/71808/70296.pdf |
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| Nunes,Lucas; Burle,Giulia; Gumboski,Emerson Luiz; Dechoum,Michele. |
| ABSTRACT Lichens play a key role in natural ecosystems, as they can function as primary producers, recycle minerals and fix nitrogen. Despite their environmental importance, little is known about lichen ecology in Brazil, and especially about how abiotic factors may influence their spatial distribution. In this study, we aimed to verify how the cover and richness of corticolous lichens on Araucaria angustifolia trunks vary between two different habitats (Forest and Grassland). The photoquadrat sampling method was applied to A. angustifolia trunks. The Coral Point Count software with Excel extensions (CPCe) was used to analyze photographs for lichen cover and richness. Additionally, a redundancy analysis was conducted to estimate how five abiotic and two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ascomycota; Corticolous lichens; Environmental selectivity; Fungi; Lichen ecology; Niche overlap. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100021 |
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| Morgado,HS; Cysneiros,CSS; Sousa,CM; Stringhini,JH; Ulhoa,CJ; Silva,AS; Fabino Neto,R; Freitas,PVDX; Oliveira,HP; Batista,LHC. |
| ABSTRACT Two experiments were performed to evaluate the hematological and blood biochemistry parameters, biometry of digestive organs, enzyme activities, protein content and absolute weight of the pancreas of broilers fed pre-starter and pre-starter diets supplemented or not with amylase from Aspergillus awamori. In total, 120 male Cobb chicks were housed in heated cages in each experiment. A completely randomized experimental design, with two treatments (feed with and without amylase) and six replicates per treatment of 10 birds each was applied. The data were subjected to analysis of variance using the F-test at 5% probability level. The dietary amylase addition did not affect hematological and blood biochemistry parameters and the biometry of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood; Chickens; Fungi; Nutrition. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400725 |
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| Baracho,Marta S.; Baracho,Ivanhoé R.. |
| Mutations related to gene methG1 of Aspergillus nidulans were analyzed, in order to study a mathematical model for the determination of the mutation rate per nucleus per generation, in filamentous fungi. A replica plating technique was used to inoculate, in a single operation, 26 colonies of the strain, into Petri dishes containing culture medium, and the nine central colonies were analyzed for size and number of conidia in each colony. Using this technique, several central colonies were analyzed with regard to the appearance of mutation, and the number and type of reversions were determined for each colony. The frequencies obtained for each reversion were analyzed, in order to verify if their distribution was in accordance with that of Greenwood and Yule.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus nidulans; Mutation rate; Spontaneous mutation; Fungi; Filamentous fungi. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100014 |
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| Romero-Noguera,Julio; López-Miras,María del Mar; Martín-Sánchez,Inés; Ramos-López,José Miguel; Bolívar-Galiano,Fernando. |
| Mastic, one of the best natural varnishes, is frequently used as protective and finishing layer or as component of oleo-resinous media in paintings, both in the past and currently. However, this resin is affected by complex deterioration processes which can change its characteristics and thus the visual aspect of works of art. The alteration processes caused by radiation have been widely studied, but there is a lack of information on the biodeterioration of this natural product. In this paper, fungi from collections as well as from oil paintings of the Fine Arts Museum of Granada (Spain) were inoculated onto slides covered with mastic. The samples, after an incubation period of 15 days, were analysed by gas chromatography-mass spectrometry (GC-MS) to... |
| Tipo: Journal article |
Palavras-chave: Biodeterioration; Fungi; GC-MS; Mastic. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000600001 |
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| Barbosa,Maria Angélica G.; Rehn,Kurt Georg; Menezes,Maria; Mariano,Rosa de Lima R.. |
| The verrucose caused by Cladosporium herbarum reduces production and quality of Passion fruit (Passiflora edulis Sims.), a largely consumed tropical fruit. This work aimed to investigate the antagonism of Trichoderma species (T. polysporum, T. koningii, T. viride and T. harzianum) against Cladosporium herbarum, and to study the production of extracellular hydrolytic enzymes by the pathogen and the antagonists. The results showed considerable antagonistic potential for the biocontrol of C. herbarum isolates by all Trichoderma species, except T. koningii. The most distinguished effect was observed for T. polysporum. In relation to the pattern of esterase obtained by electrophoresis in poliacrylamyde gel, the major activity presented by the isolates was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passion fruit; Biological control; Extracellular enzymes; Fungi. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200005 |
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| Gayoso,Carla Wanderley; Lima,Edeltrudes de Oliveira; Souza,Evandro Leite de; Cechinel Filho,Valdir; Trajano,Vinícius Nogueira; Pereira,Fillipe de Oliveira; Lima,Igara Oliveira. |
| This study aimed to analyze the effectiveness of maleimides as inhibitors on the growth of fungal strains isolated from onychomycosis by the solid medium diffusion procedure. The results showed a promising antifungical activity of the assayed maleimides with formation of fungal growth inhibition halos oscillating between diameter 10 and 23mm. MIC was 100µg/mL for 3,4-dichloro-N-phenyl-methyl-maleimide and 3,4-dichloro-N-phenyl-propil-maleimide and 200µg/mL for 3,4-dichloro-N-phenyl-maleimide, 3,4-dichloro-N-phenyl-ethyl-maleimide and 3,4-dichloro-N-phenyl-buthyl-maleimide. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Onychomycosis; Fungi; Maleimides; Antifungical activity. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500016 |
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| Lavornia,Juan M; García,Renato A; Rosato,Vilma G; Kristensen,María J; Chayle,Jorge A; Saparrat,Mario N. |
| El Instituto de Botánica Carlos Spegazzini (IBCS) (UNLP, La Plata) contiene un herbario de hongos (LPS) de aproximadamente 40000 ejemplares, con 4200 especies tipo. El objetivo de este trabajo fue examinar los ejemplares de hongos liquenizados depositados en el IBCS, actualizar su taxonomía y denominación, revisar las especies con determinación dudosa, identificar aquellos no determinados, e incorporarlos en el Herbario LPS. Se estudiaron 192 ejemplares de 11 provincias de Argentina y de Brasil, Uruguay y Francia y de se determinaron en base a su exo-morfología, cortes histológicos y reacciones histoquímicas. También se realizaron Cromatografías en Capa Delgada (TLC) para estudiar los metabolitos presentes. Se estableció la distribución geográfica en... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Herbario LPS; Líquenes; Argentina. |
| Ano: 2017 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100001 |
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| Registros recuperados: 348 | |
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