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| Registros recuperados: 66 | |
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| Castilla,Karina Salvagni; Ferreira,Claudete Serrano Astolfi; Moreno,Andrea Micke; Nunes,Iolanda Aparecida; Ferreira,Antônio José Piantino. |
| The distribution of virulence genes, sefC, pefA and spvC, was investigated in 110 Salmonella Enteritidis phage type 4 strains by polymerase chain reaction. Their influence in the caecal colonization and invasion of liver and spleen of one-day-old chickens was studied. Eight isolates were negative for the spvC gene, three for the pefA gene and one, for the sefC gene. These results allowed grouping the strains into four genotypes. Presence of these genes did not influence bacteria invasion in the liver and spleen of the chickens ten days after infection, although the presence of more than one fimbrial gene can be related to caecal colonization. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella; Virulence genes; Colonization; Invasion. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000200007 |
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| Mattos,Katherine A.; Pádua,Vania L.M.; Romeiro,Alexandre; Hallack,Leticia F.; Neves,Bianca C.; Ulisses,Tecia M.U.; Barros,Claudia F.; Todeschini,Adriane R.; Previato,José O.; Mendonça-Previato,Lucia. |
| Burkholderia kururiensis is a diazotrophic bacterium originally isolated from a polluted aquifer environment and presents a high level of similarity with the rice endophyte "B. brasilensis" species. This work assessed the ability of B. kururiensis to endophytically colonize rice plantlets by monitoring different tissues of root-inoculated plants for the presence of bacterial growth in different media, electron microscopy and by 16S rDNA analysis. Observations of roots, stems and leaves of inoculated rice plantlets by electron microscopy revealed B. kururiensis colonization predominantly on root hair zones, demonstrating endophytic colonization primarily through the endodermis, followed by spreading into xylem vessels, a possible pathway leading to aerial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Burkholderia kururiensis; Colonization; Rice; Diazotrophic bacterium; Auxin. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000300009 |
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| Fera, P; Prieur, D. |
| Before the building of an (OTEC) power plant, and experimental station was built near the entrance of the Bay of Brest in order to do preliminary studies. Using these facilities, the bacterial colonization of three substrata (stainless steel UB6, aluminium AG4, polycarbonate filters) was studied in an open seawater system, with a speed of 0,7 m s super(-1). The study was performed between May 1983 and May 1984, including seven experiments of 15 days each. Bacteria colonizing the metallic surfaces were counted by scanning electron microscopy, and bacteria colonizing the polycarbonate filters counted by epifluorescence microscopy. On the three substrata, bacterial colonization occurred in three successive stages: initial colonization, sometimes unsteady... |
| Tipo: Text |
Palavras-chave: Fouling; OTEC plants; Bacteria; Colonization; Adhesion; Microbiological analysis; Surface films. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-964.pdf |
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| Camus, Patrick; Compere, Chantal; Blanchet, Aline; Dimeet, Joel; Hamon, Dominique; Lacotte, Nicolas; Peleau, Michel; Lassalle, Elisabeth. |
| This study [...] was carried out from June 1998 to January 2000 and enabled the assessment of the scientific knowledge on the biology, ecology and distribution of the Annelida Polychaeta sedentaria: Ficopomatus enigmaticus. [...] In order to better determine the characteristics of this species' environment and development cycle, a study was conducted in the worksite of the marina of Vannes. This study, mostly biological, was completed by a technological study on the fighting techniques (antifouling paints) used against the damage made by this worm on the boat hulls. In addition, this document presents some recommendations to follow in order to limit, or stop, the development of this "pollution". |
| Tipo: Text |
Palavras-chave: Marina harbours; Disturbance; Colonization; Ficopomatus enigmaticus; Port de plaisance; Pertubation; Colonisation; Ficopomatus enigmaticus. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/rapport-6131.pdf |
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| Nunes,Endson S.; Brown,Judith K.; Moreira,Adriana G.; Watson,Gillian; Lourenção,André L.; Piedade,Sônia M.S.; Rezende,Jorge A. M.; Vieira,Maria L.C.. |
| This note is the first report of Bemisia tabaci (Gennadius) biotype B colonizing passionvine in Brazil. We examined the colonization of nine Passiflora species by a wild B type population under greenhouse conditions. P. amethystina Mikan was the most preferred species for oviposition and colonization, whereas P. suberosa L., P. coriacea Juss. and two commercially cultivated species, P. alata Curtis and P. edulis Sims f. flavicarpa Degener, were mostly uncolonised. P. morifolia Mast., P. cincinnata Mast., P. foetida L. and P. caerulea L. showed intermediate levels of colonization. Such differential colonization might suggest some degree of resistance by certain Passiflora species or oviposition preference by B. tabaci. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passifloraceae; Begomovirus; Colonization. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000600021 |
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| PEDROSA, F. O.; MONTEIRO, R. A.; WASSEM, R.; CRUZ, L. M.; AYUB, R. A.; COLAUTO, N. B.; FERNANDEZ, M. A.; FUNGARO, M. H. P.; GRISARD, E. C.; HUNGRIA, M.; MADEIRA, H. M. F.; NODARI, R. O.; OSAKU, C. A.; PETZL-ELER, M. L.; TERENZI, H.; VIEIRA, L. G. E.; STEFFENS, M. B. R.; WEISS, V. A.; PEREIRA, L. F. P.; ALMEIDA, M. I. M.; ALVES, L. R.; MARIN, A.; ARAUJO, L. M.; BALSANELLI, E.; BAURA, V. A.; CHUBATSU, L. S.; FAORO, H.; FAVETTI, A.; FRIEDERMANN, G.; GLIENKE, C.; KARP, S.; KAVA-CORDEIRO, V.; RAITTZ, R. T.; RAMOS, H. J. O.; RIBEIRO, E. M. S. F.; RIGO, L. U.; ROCHA, S. N.; SCHWAB, S.; SILVA, A. G.; TADRA-SFEIR, M. Z.; TORRES, R. A.; DABUL, A. N. G.; SOARES, M. A. M.; GASQUES, L. S.; GIMENES, C. C. T.; VALLE, J. S.; CIFERRI, R. R.; CORREA, L. C.; MURACE, N. K.; PAMPHILE, J. A.; PATUSSI, E. V.; PRIOLI, A. J.; PRIOLI, S. M. A.; ROCHA, C. L. M. S. C.; ARANTES, O. M. N.; FURLANETO, M. C.; GODOY, L. P.; OLIVEIRA, C. E. C.; SATORI, D.; VILAS-BOAS, L. A.; WATANABE, M. A. E.; DAMBROS, B. P.; GUERRA, M. P.; MATHIONI, S. M.; SANTOS, K. L.; STEINDEL, M.; VERNAL, J.; BARCELLOS, F. G.; CAMPO, R. J.; CHUEIRE, L. M. O.; NICOLÁS, M. F.; PEREIRA-FERRARI, L.; SILVA, J. L. da C.; GIOPPO, N. M. R.; MARGARIDO, V. P.; MENCK-SOARES, M. A.; PINTO, F. G. S.; SIMÃO, R. de C. G.; TAKAHASHI, E. K.; YATES, M. G.; SOUZA, E. M.. |
| The molecular mechanisms of plant recognition, colonization, and nutrient exchange between diazotrophic endophytes and plants are scarcely known. Herbaspirillum seropedicae is an endophytic bacterium capable of colonizing intercellular spaces of grasses such as rice and sugar cane. The genome of H. seropedicae strain SmR1 was sequenced and annotated by The Parana´ State Genome Programme?GENOPAR. The genome is composed of a circular chromosome of 5,513,887 bp and contains a total of 4,804 genes. The genome sequence revealed that H. seropedicae is a highly versatile microorganism with capacity to metabolize a wide range of carbon and nitrogen sources and with possession of four distinct terminal oxidases. The genome contains a multitude of protein secretion... |
| Tipo: Artigo de periódico |
Palavras-chave: Plant recognition.; Nutrient; Colonization; Herbaspirillum seropedicae.. |
| Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/902450 |
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| Alfaro Lucas, Joan Manel; Pradillon, Florence; Zeppilli, Daniela; Michel, Loic; Martinez‐arbizu, P; Tanaka, H; Foviaux, M; Sarrazin, Jozee. |
| Productivity and environmental stress are major drivers of multiple biodiversity facets and faunal community structure. Little is known on their interacting effects on early community assembly processes in the deep sea (>200 m), the largest environment on Earth. However, at hydrothermal vents productivity correlates, at least partially, with environmental stress. Here, we studied the colonization of rock substrata deployed along a deep‐sea hydrothermal vent gradient at four sites with and without direct influence of vent fluids at 1700 m depth in the Lucky Strike vent field (Mid‐Atlantic Ridge, MAR). We examined in detail the composition of faunal communities (>20 µm) established after two years and evaluated species and functional patterns. We... |
| Tipo: Text |
Palavras-chave: Colonization; Community assembly; Energy; Environmental filtering; Functional beta-diversity; Species beta-diversity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00641/75342/76070.pdf |
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| Moraes,Sylvia Raquel Gomes; Tanaka,Francisco André Osama; Massola Júnior,Nelson Sidnei. |
| Anthracnose, caused by Colletotrichum gloeosporioides, produces brown lesions on guava fruits, causing severe losses on postharvest. In this study, the infection and colonization of guava fruits by C. gloeosporioides has been examined using scanning and transmission electron microscopy. Fruits at the physiologically mature stage were inoculated with a 10(5) conidia/mL spore suspension. Afterward, fruits were incubated at 25 °C in a wet chamber for periods of 6, 12, 24, 48, 96 and 120 h to allow examination of the infection and colonization process. Conidia germination and appressoria formation occurred six hours after inoculation (h.a.i). Penetration occurred directly via penetration pegs from appressoria, which penetrated the host cuticle 48 h.a.i.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonization; Penetration; Pre-penetration; Ultrastructure. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200039 |
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| Rahmani, Alexandra; Delavat, François; Lambert, Christophe; Le Goic, Nelly; Dabas, Eric; Paillard, Christine; Pichereau, Vianney. |
| Vibrio tapetis is a Gram-negative bacterium that causes infections of mollusk bivalves and fish. The Brown Ring Disease (BRD) is an infection caused by V. tapetis that primarily affects the Manila clam Ruditapes philippinarum. Recent studies have shown that a type IV secretion system (T4SS) gene cluster is exclusively found in strains of V. tapetis pathogenic to clams. However, whether the T4SS is implicated or not during the infection process remains unknown. The aim of this study was to create and characterize a V. tapetis T4SS null mutant, obtained by a near-complete deletion of the virB4 gene, in order to determine the role of T4SS in the development of BRD. This study demonstrated that the T4SS is neither responsible for the loss of hemocyte adhesion... |
| Tipo: Text |
Palavras-chave: Brown Ring Disease; Vibrio tapetis; Ruditapes philippinarum; Hemocytes; Type four secretion system; Rounding phenotype; Colonization; Mutagenesis. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00692/80383/83507.pdf |
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| Vasconcelos,Marcelo Ferreira de; Dutra,Eduardo de Carvalho; Mazzoni,Luiz Gabriel; Pedroso,Letícia Ferreira; Perillo,Alyne; Valério,Fernando Augusto; Guerra,Tadeu; Petrocchi,Diego; Morais,Rodrigo; Santos,Lucas Penna Soares; Garzon,Bruno; Dias,Juan Espanha Moreira; Santos,José Enemir dos; Morais,Allan Suhett de; Guimarães,Letícia Souza Lima; Garcia,Frederico Innecco Alves; Almeida,Thiago Oliveira e; Benfica,Carlos Eduardo Ribas Tameirão; Peixoto,Helberth José Cardoso; Ribeiro,Bruno Pardinho. |
| Urban avifaunal surveys in Brazil have been increasing in recent years, despite none of them consisting of long-term studies indicating events of regional colonization and/or missing species. Here, we present an avifaunal survey of an urbanized ecosystem in southeastern Brazil, carried out along 30 years, on the campus of the Pontifícia Universidade Católica de Minas Gerais, municipality of Belo Horizonte, Minas Gerais state. Inside the campus there is a forest reserve adjacent to a small lake. The inventory was mainly based on opportunistic records from the years 1982-2013. We recorded 134 bird species along the past 30 years. However, the present avifauna is composed of 123 species. A total of 97 species was recorded in the reserve, including the forest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avifauna; Colonization; Disappearing species; Urban environment. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013002500001 |
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| Registros recuperados: 66 | |
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