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| Registros recuperados: 88 | |
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| Velge, P.; Herler, M.; Johansson, J.; Roche, S.; Témoin, S.; Fedorov, A. A.; Gracieux, P.; Almo, S. C.; Goebel, W.; Cossart, P.. |
| The sequencing of prfA, encoding the transcriptional regulator of virulence genes, in 26 low virulence field Listeria monocytogenes strains showed that eight strains exhibited the same single amino-acid substitution: PrfAK220T. These strains exhibited no expression of PrfA-regulated proteins and thus no virulence. This substitution inactivated PrfA, since expression of the PrfAK220T mutant gene in an EGDΔprfA strain did not restore the haemolytic and phosphatidylcholine phospholipase C activities, in contrast to the wild-type prfA gene. The substitution of the lysine at position 220 occurred in the helix αH. However, the data showed that the PrfAK220T protein is dimerized just as well as its wild-type counterpart, but does not bind to PrfA boxes.... |
| Tipo: Journal Article |
Palavras-chave: LISTERIA MONOCYTOGENES; PROTEINE; FACTEUR DE VIRULENCE; BACTERIE PATHOGENE; ADN; SEQUENCE NUCLEOTIDIQUE; REGULATION; TRANSCRIPTION; VIRULENCE; EXPRESSION DES GENES; ACIDE AMINE; MUTATION; RT-PCR; ELECTROPHORESE; ENZYME; ARN POLYMERASE. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009c1895b3c&uri=/notices/prodinra1/2009/11/ |
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| MEISEL,LEE; FONSECA,BEATRIZ; GONZÁLEZ,SUSANA; BAEZA-YATES,RICARDO; CAMBIAZO,VERONICA; CAMPOS,REINALDO; GONZALEZ,MAURICIO; ORELLANA,ARIEL; RETAMALES,JULIO; SILVA,HERMAN. |
| Prunus persica has been proposed as a genomic model for deciduous trees and the Rosaceae family. Optimized protocols for RNA isolation are necessary to further advance studies in this model species such that functional genomics analyses may be performed. Here we present an optimized protocol to rapidly and efficiently purify high quality total RNA from peach fruits (Prunus persica). Isolating high-quality RNA from fruit tissue is often difficult due to large quantities of polysaccharides and polyphenolic compounds that accumulate in this tissue and co-purify with the RNA. Here we demonstrate that a modified version of the method used to isolate RNA from pine trees and the woody plant Cinnamomun tenuipilum is ideal for isolating high quality RNA from the... |
| Tipo: Journal article |
Palavras-chave: CDNA library; Fruit; Fruit trees; Functional genomics; Peach; Polysaccharides; Prunus persica; RNA isolation; Rosaceae; RT-PCR. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000100010 |
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| LANDIM, JR, L. P.; FERREIRA, C. R.; PERECIN, F.; NICIURA, S. C. M.; YAMAZAKI, W.; MIGLINO, M. A.; GARCIA, J. M.. |
| O sucesso da produção de embriões por fecundação in vitro ou transferência nuclear depende de uma variedade de fatores, dos quais a formação de uma incompleta vascularização placentária representa uma das principais causas de perda gestacional precoce. Neste trabalho, avaliou-se a expressão relativa de Fator de Crescimento Endotélio-vascular (VEGF), um potente agente vasculogênico, em placentas de bovinos clonados por transferência nuclear (NT), produzidos por fecundação in vitro (FIV), ou por monta natural (MN). Verificou-se um decréscimo altamente significativo de expressão de VEGF nas placentas dos animais produzidos in vitro, quando comparados aos animais MN (1,32a; 0,21b; 0,31b, respectivamente para MN, FIV e NT, p<0,05; teste de Duncan), sugerindo... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Análise de expressão génica; Semiquantitativo; Placentas Bovinas; VEGF; Clone; RT-PCR. |
| Ano: 2006 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/256248 |
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| Chertemps, T.; Mitri, C.; Perrot, S.; Sautereau, J.; Jacques, J.-C.; Thiery, I.; Bourgouin, C.; Rosinski-Chupin, I.. |
| Background: Invasion of the mosquito salivary glands by Plasmodium is a critical step for malaria transmission. From a SAGE analysis, we previously identified several genes whose expression in salivary glands was regulated coincident with sporozoite invasion of salivary glands. To get insights into the consequences of these salivary gland responses, here we have studied one of the genes, PRS1 (Plasmodium responsive salivary 1), whose expression was upregulated in infected glands, using immunolocalization and functional inactivation approaches. Methodology/Principal Findings: PRS1 belongs to a novel insect superfamily of genes encoding proteins with DM9 repeat motifs of uncharacterized function. We show that PRS1 is induced in response to Plasmodium, not... |
| Tipo: Journal Article |
Palavras-chave: PLASMODIUM; MOUSTIQUE; GLANDE SALIVAIRE; SALIVE; MALADIE INFECTIEUSE; PROTEINE; TRANSMISSION DE LA MALADIE; VECTEUR DE LA MALADIE; INTERACTION MOLECULAIRE; RT-PCR; SDS-PAGE; ARTHROPODA; HEXAPODA; EXPRESSION DES GENES; MICROSCOPIE CONFOCALE; INSECTE; PARASITOSE MALARIA PARASITE; MOLECULAR-INTERACTIONS; BERGHEI SPOROZOITES; MOSQUITO; INVASION; INFECTION; PROTEIN; VECTOR; CELLS; FALCIPARUM. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010f5c08798&uri=/notices/prodinra1/2010/11/ |
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| Yakoubi, S.; Desbiez, C.; Fakhfakh, H.; Wipf-Scheibel, C.; Marrakchi, M.; Lecoq, H.. |
| During a survey conducted in October 2005, cucurbit leaf samples showing virus-like symptoms were collected from the major cucurbit-growing areas in Tunisia. DAS-ELISA showed the presence of Moroccan watermelon mosaic virus (MWMV, Potyvirus), detected for the first time in Tunisia, in samples from the region of Cap Bon (Northern Tunisia). MWMV isolate TN05-76 (MWMV-Tn) was characterized biologically and its full-length genome sequence was established. MWMV-Tn was found to have biological properties similar to those reported for the MWMV type strain from Morocco. Phylogenetic analysis including the comparison of complete amino-acid sequences of 42 potyviruses confirmed that MWMV-Tn is related (65% amino-acid sequence identity) to Papaya ringspot virus... |
| Tipo: Journal Article |
Palavras-chave: TEST ELISA MOROCCAN WATERMELON MOSAIC VIRUS; POTYVIRUS; MWMV; APHID TRANSMISSION; RT-PCR. |
| Ano: 2008 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009795590d8&uri=/notices/prodinra1/2010/10/ |
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| Pierrugues, O.; Guilbaud, L.; Fernandez-Delmond, I.; Fabre, F.; Tepfer, M.; Jacquemond, M.. |
| In vitro reverse transcription of a mixture of total RNA from plants infected with the I17F or R strains of cucumber mosaic virus (CMV), representative of subgroups IA and II, respectively, results in viral cDNA populations including rare recombinant RNA 3 molecules, some of which also have point mutations. The biological properties of 17 recombinants in the capsid gene or the39 non-coding region of RNA 3 were evaluated when associated with I17F RNAs 1 and 2. Sixviruses displayed deficiencies (non-viability, deficiencies for movement and/or replication, delayed infection, loss of aphid transmissibility). Nine induced symptoms close to those of I17F-CMV ontobacco and pepper plants. All recombinants bearing the movement protein (MP) of R-CMVand part or most... |
| Tipo: Journal Article |
Palavras-chave: GENOME VIRAL; ARN VIRAL; PROPRIETE BIOLOGIQUE CUCUMBER MOSAIC VIRUS; GENETIC DIVERSITY; CMV; RECOMBINAISON GENETIQUE; RT-PCR. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008309b90b2&uri=/notices/prodinra1/2008/06/ |
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| Macedo, Carla Isabel; Peixoto, Zélia Maria Pinheiro; Castilho, Juliana Galera; Oliveira, Rafael de Novaes; Rodrigues, Adriana Cândido; Achkar, Samira Maria. |
| Canine distemper (CD) is one of the most important infectious diseases in domestic dogs. In Brazil, CD is still the principal cause of mortality of dogs in some urban populations. Although different viral gene sequences have been identified for detecting the canine distemper virus (CDV), the N gene appears to be a better target for the amplification of specific fragments from all CDV strains. Using RT-PCR targeted to the CDV N gene, during the year 2014 we analyzed 190 central nervous system (CNS) samples of dogs from the state of São Paulo, Brazil, with symptoms suggestive of encephalitis and sent them to the Pasteur Institute for the diagnosis of rabies. Positivity for CD was over 50%, indicating that the disease remains an important cause of canine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canine Distemper; RT-PCR; Encephalitis; Diagnosis cinomose canina; RT-PCR; Encefalite; Diagnóstico. |
| Ano: 2016 |
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/31032 |
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| AYALA VÁSQUEZ,MARILUZ; GONZÁLEZ JAIMES,PAOLA; GUTIÉRREZ,PABLO ANDRÉS; COTES,JOSÉ MIGUEL; MARÍN MONTOYA,MAURICIO. |
| El tomate de árbol (Solanum betaceum) es una fruta andina altamente nutritiva, con propiedades organolépticas únicas para el procesamiento industrial y el mercado internacional. En Antioquia, Colombia, este cultivo presenta diferentes problemas fitosanitarios, siendo especialmente limitante la Virosis, causada por un complejo viral del que hacen parte entre otras, especies del género Potyvirus. En este trabajo se evaluaron mediante pruebas de ELISA los niveles de incidencia de este grupo viral en cultivos de siete zonas del departamento de Antioquia y se determinó la identidad taxonómica de dos de los potyvirus asociados al cultivo. Las pruebas serológicas muestran la presencia de potyvirus en seis de las siete zonas evaluadas, alcanzando niveles... |
| Tipo: Journal article |
Palavras-chave: ELISA; Potyvirus; PVY; RT-PCR; Tamarillo. |
| Ano: 2010 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2010000300011 |
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| CAMARGOS, A.; WOHLRES-VIANA, S.; COSTA, I. F.; CAMARGO, L. S. de A.; FERREIRA, J. C.; RAMOS, A. A.; OBA, E.. |
| ABSTRACT The present study investigated the hormonal profile and expression of prostaglandin F2? (PGF2?), oxytocin and estrogen receptors in uterine tissues of postpartum cows treated with cloprostenol. Twenty HolsteinZebu crossbred cows were treated with saline solution (treatment CONT) or cloprostenol (treatment CLO), both administered two and five days postpartum. Blood samples were collected on days two, seven, 14, 21 and 28 postpartum for progesterone, PGF2? metabolite (PGFM) and estradiol determination, and endometrial biopsy was performed in order to quantify the expression of oxytocin receptor (OXTR), prostaglandin F receptor (PTGFR) and estrogen receptor 1 (ERS1) genes. In the CLO treatment, expression of OXTR was reduced (P<0.05) but no... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: PTGFR; ESRI; Progesterone; Estradiol; RT-PCR. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085645 |
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| Shu,Canwei; Sun,Si; Chen,Jieling; Chen,Jianyi; Zhou,Erxun. |
| Background Rhizoctonia solani (teleomorph: Thanatephorus cucumeris) is one of the most important pathogens of rice (Oryza sativa L.) that causes severe yield losses in all rice-growing regions. Sclerotia, formed from the aggregation of hyphae, are important structures in the life cycles of R. solani and contain a large quantity of polysaccharides, lipids, proteins and pigments. In order to extract high-quality total RNA from the sclerotia of R. solani, five methods, including E.Z.N.A.™ Fungal RNA Kit, sodium dodecyl sulfate (SDS)-sodium borate, SDS-polyvinylpyrrolidone (PVP), guanidinium thiocyanate (GTC) and modified Trizol, were compared in this study. Results The electrophoresis results showed that it failed to extract total RNA from the... |
| Tipo: Journal article |
Palavras-chave: Polyvinylpyrrolidone; Rhizoctonia solani; RT-PCR; Sclerotia; Sodium dodecyl sulfate; Total RNA extraction. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000100009 |
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| Registros recuperados: 88 | |
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