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Registros recuperados: 14
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Assessment of powdery mildew resistance of grape and Erysiphe necator pathogenicity using a laboratory assay Inra
Peros, J.P.; Nguyen, T.H.; Troulet, C.; Michel-Romiti, C.; Notteghem, J.L..
To develop a quantitative evaluation of grapevine resistance to powdery mildew and of pathogenicity of the causal agent (*Erysiphe necator*), a spot inoculation method was developed using detached leaves of potted plants. The percentage of inoculating spots leading to a colony and the mean diameter of colonies were determined to assess the host-pathogen relationships. Significant differences were found between host cultivars and their ranking was associated with that observed in the vineyard. There was a significant interaction between cultivar and replicate during the whole experiment indicating that the physiological state of detached leaves is important. Aging of tissues was accompanied by a gain in resistance that was considerably more marked in...
Tipo: Journal Article Palavras-chave: OIDIUM POWDERY MILDEW; VITIS HYBRIDS; RATING METHOD; ONTOGENIC RESISTANCE; ERYSIPHE NECATOR; UNCINULA NECATOR; PATHOGENICITY.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20079bfc00e1&uri=/notices/prodinra1/2008/05/
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Biogeography of the plant pathogen Pseudomonas syringae in alpine headwaters of rivers in the USA, France and New Zealand Inra
Morris, C.; Sands, D.C.; Vanneste, J.L.; Montarry, J.; Oakley, B.; Guilbaud, C.; Glaux, C..
Tipo: Conference Paper Palavras-chave: NON HOST RESERVOIR; NON AGRICULTURAL SUBSTRATE; PATHOGENICITY; DISSEMINATION; GENETIC STRUCTURE; ICE NUCLEATION ACTIVITY; WATER CHEMISTRY; EPIDEMIOLOGY; AEROSOL; BIOGEOGRAPHY;  .
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20103f4941e9&uri=/notices/prodinra1/2010/11/
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Characterization of Xenorhabdus isolates from La Rioja ( Northern Spain) and virulence with and without their symbiotic entomopathogenic nematodes (Nematoda: Steinernematidae) Inra
Campos-Herrera, R.; Tailliez, P.; Pages, S.; Ginibre, N.; Gutiérrez, C.; Boemare, N..
Eighteen Xenorhabdus isolates associated with Spanish entomopathogenic nematodes of the genus Steinernema were characterized using a polyphasic approach including phenotypic and molecular methods. Two isolates were classified as Xenorhabdus nematophila and were associated with Steinernema carpocapsae. Sixteen isolates were classified as Xenorhabdus bovienii, of which fifteen were associated with Steinernema feltiae and one with Steinernema kraussei. Two X. bovienii Phase II were also isolated, one instable phase isolated from S. feltiae strain Rioja and one stable phase from S. feltiae strain BZ. Four representative bacterial isolates were chosen to study their pathogenicity against Spodoptera littoralis with and without the presence of their nematode...
Tipo: Journal Article Palavras-chave: ENTOMOPATHOGENIC BACTERIA AND NEMATODE; PATHOGENICITY; SPODOPTERA LITTORALIS; STEINERNEMA; XENORHABDUS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20108be8d96&uri=/notices/prodinra1/2010/10/
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Comparative genomics reveals mobile pathogenicity chromosomes in Fusarium Inra
Ma, L.J.; Van der Does, C.; Borkovich, K.A.; Coleman, J.J.; Daboussi, M.J.; di Pietro, A.; Dufresne, M.; Freitag, M.; Grabherr, M.; Henrissat, B.; Houterman, P.M.; Kang, S.; Shim, W.B.; Woloshuk, C.; Xie, X.; Xu, J.R.; Antoniw, J.; Baker, S.E.; Bluhm, B.H.; Breakspear, A.; Brown, D.W.; Butchko, R.A.E.; Chapman, S.; Coulson, R.; Coutinho, P.M.; Danchin, E.; Diener, A.; Gale, L.R.; Gardiner, D.M.; Goff, S.; Hammond-Kosack, K.E.; Hilburn, K.; Hua-Van, A.; Jonkers, W.; Kazan, K.; Kodira, C.D.; Koehrsen, M.; Kumar, L.; Lee, Y.H.; Li, L.; Manners, J.M.; Miranda-Saavedra, D.; Mukherjee, M.; Park, G.; Park, J.; Park, S.Y.; Proctor, R.H.; Regev, A.; Ruiz-Roldan, C.; Sain, D.; Sakthikumar, S.; Sykes, S.; Schwartz, D.C.; Turgeon, B.G.; Wapinski, I.; Yoder, O.; Young, S.; Zeng, Q.; Zhou, S.; Galagan, J.; Cuomo, C.; Kistler, H.C.; Rep, M..
Fusarium species are among the most important phytopathogenic and toxigenic fungi. To understand the molecular underpinnings of pathogenicity in the genus Fusarium, we compared the genomes of three phenotypically diverse species: Fusarium graminearum, Fusarium verticillioides and Fusarium oxysporum f. sp. lycopersici. Our analysis revealed lineage-specific (LS) genomic regions in F. oxysporum that include four entire chromosomes and account for more than one-quarter of the genome. LS regions are rich in transposons and genes with distinct evolutionary profiles but related to pathogenicity, indicative of horizontal acquisition. Experimentally, we demonstrate the transfer of two LS chromosomes between strains of F. oxysporum, converting a non-pathogenic...
Tipo: Journal Article Palavras-chave: MAXIMUM-LIKELIHOOD; POLYMORPHISM; HOST PATHOGEN RELATIONSHIPS; PATHOGENICITY; DISEASE RESISTANCE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20106b10c4f0&uri=/notices/prodinra1/2011/03/
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Experimental Evolution of a Plant Pathogen into a Legume Symbiont Inra
Marchetti, M.; Capela, D.; Glew, M.; Cruveiller, S.; Chane-Woon-Ming, B.; Gris, C.; Timmers, T.; Poinsot, V.; Gilbert, B.L.; Heeb, P.; Médigue, C.; Batut, J.; Masson-Boivin, C..
Abstract /Rhizobia are phylogenetically disparate a- and b-proteobacteria that have achieved the environmentally essential functionof fixing atmospheric nitrogen in symbiosis with legumes. Ample evidence indicates that horizontal transfer of symbioticplasmids/islands has played a crucial role in rhizobia evolution. However, adaptive mechanisms that allow the recipientgenomes to express symbiotic traits are unknown. Here, we report on the experimental evolution of a pathogenic Ralstoniasolanacearum chimera carrying the symbiotic plasmid of the rhizobium Cupriavidus taiwanensis into Mimosa nodulating andinfecting symbionts. Two types of adaptive mutations in the hrpG-controlled virulence pathway of R. solanacearum wereidentified that are crucial for the...
Tipo: Journal Article Palavras-chave: SYMBIONTE; RHIBOZIUM; EVOLUTION; SELECTION NATURELLE; SYMBIOSE; PATHOGENICITE; MUTUALISME; NODULATION; INFECTION NATURAL SELECTION; SYMBIOSIS; PATHOGENICITY; HOST-PATHOGEN RELATIONSHIP.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011d7a04683&uri=/notices/prodinra1/2011/07/
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Fungi have three tetraspanin families with distinct functions Inra
Lambou, K; Tharreau, D.; Kohler, A.; Sirven, C; Marguerettaz, M; Barbisan, C; Sexton, A; Kellner, E; Martin, F.; Howlett, B; Orbach, M; Lebrun, MH.
Background: Tetraspanins are small membrane proteins that belong to a superfamily encompassing 33 members in human andmouse. These proteins act as organizers of membrane-signalling complexes. So far only two tetraspanin families have beenidentified in fungi. These are Pls1, which is required for pathogenicity of the plant pathogenic ascomycetes, Magnaporthe grisea,Botrytis cinerea and Colletotrichum lindemuthianum, and Tsp2, whose function is unknown. In this report, we describe a third familyof tetraspanins (Tsp3) and a new family of tetraspanin-like proteins (Tpl1) in fungi. We also describe expression of some of thesegenes in M. grisea and a basidiomycete, Laccaria bicolor, and also their functional analysis in M. grisea. Results: The exhaustive search...
Tipo: Journal Article Palavras-chave: BASIDIOMYCETES; ASCOMYCETES; COPRINUS CINEREUS; LACCARIA BICOLOR; MAGNAPORTHE GRISEA; PROTEINE MEMBRANAIRE; TETRASPANINE; PATHOGENIE; POUVOIR PATHOGENE; INFECTION RICE; BARLEY; GENE EXPRESSION; MYCELIUM; PATHOGENICITY; PLANT PATHOGENIC FUNGI; SURFACE PROTEINS; TRANSCRIPTION; DNA TRANSCRIPTION; MEMBRANE PROTEINS.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20101f8edf6&uri=/notices/prodinra1/2010/11/
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Impact of snowmelt on the population structure of the plant pathogen Pseudomonas syringae in an alpine hydrological system Inra
Monteil, C.; Glaux, C.; Pasquier, A.; Lafolie, F.; Morris, C..
Tipo: Conference Paper Palavras-chave: NON HOST RESERVOIR; NON AGRICULTURAL SUBSTRATE; PATHOGENICITY; DISSEMINATION; GENETIC STRUCTURE; ICE NUCLEATION ACTIVITY; WATER CHEMISTRY; EPIDEMIOLOGY; AEROSOL; BIOGEOGRAPHY;  .
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20102b301ff4&uri=/notices/prodinra1/2010/11/
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Impact of snowmelt on the population structure of the plant pathogen Pseudomonas syringae in an alpine hydrological system Inra
Monteil, C.; Glaux, C.; Guilbaud, C.; Pasquier, A.; Lafolie, F.; Morris, C..
Tipo: Conference Paper Palavras-chave: PHENOTYPE; ICE NUCLEATION ACTIVITY; TOXINS; PATHOGENICITY; POPULATION STRUCTURE; FITNESS; WATER CHEMISTRY.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010276dd2fe&uri=/notices/prodinra1/2010/11/
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Insights into the evolutionary history of the plant pathogen Pseudomonas syringae from its biogeography in river headwaters Inra
Morris, C.; Sands, D.C.; Vanneste, J.L.; Montarry, J.; Oakley, B.; Guilbaud, C.; Glaux, C..
Tipo: Conference Paper Palavras-chave: NON HOST RESERVOIR; NON AGRICULTURAL SUBSTRATE; PATHOGENICITY; DISSEMINATION; GENETIC STRUCTURE; ICE NUCLEATION ACTIVITY; WATER CHEMISTRY; EPIDEMIOLOGY; AEROSOL; BIOGEOGRAPHY;  .
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010a64da44&uri=/notices/prodinra1/2010/11/
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Internalins: a complex family of leucine-rich repeat-containing proteins in Listeria monocytogenes Inra
Bierne, H.; Sabet, C.; Personnic, N.; Cossart, P..
The Listeria monocytogenes genome includes a large family of proteins harbouring leucine-rich repeats known as internalins (Inl). The generation of novel mutants and comparative analysis of Inl variability among Listeria and other bacterial genomes suggest that beyond the extensively-studied invasins, InlA and InlB, additional internalins also play important functions in the infectious process.
Tipo: Journal Article Palavras-chave: LISTERIA MONOCYTOGENES; MICROORGANISME; BACTERIE PATHOGENE; SURFACE DE LA PROTEINE; LEUCINE; ACIDE AMINE; PROTEINE; MUTATION; EXPRESSION DES GENES; INTERNALINE; INFECTION; POUVOIR PATHOGENE LEUCINE-RICH REPEAT; PATHOGENICITY; SURFACE PROTEIN; VIRULENCE FACTORS; INVASIN.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20095b9ab581&uri=/notices/prodinra1/2010/11/
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Rapid in planta detection of Chalara fraxinea by a real-time PCR assay using a dual-labelled probe Inra
Ioos, R.; Kowalski, T.; Husson, C.; Holdenrieder, O..
Chalara fraxinea is a fungus currently threatening ash trees (Fraxinus excelsior) in several European countries. This emerging pathogen was assigned to the EPPO’s alert list and therefore accurate detection and identification tools are needed. Because of its slow growth rate on agar media and the frequent presence of fast-growing saprotrophic fungi within the host tissue, classical isolation techniques are timeconsuming and sometimes inefficient. In this study, we used species-specific polymorphisms observed within the internal transcribed spacer region to design a primer pair and a dual-labelled probe to be used in a real-time PCR assay for the detection of C. fraxinea. The test proved to be specific, based on in silico and in vitro assessments, and could...
Tipo: Journal Article Palavras-chave: PATHOGENICITY; DIAGNOSIS; FRAXINUS EXCELSIOR; DISEASE.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010fafccf75&uri=/notices/prodinra1/2010/10/
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Secretome of animal trypanosomes from a standard method toward new diagnostic and therapeutic targets Inra
Holzmuller, P.; Grébaut, P.; Peltier, J.B.; Brizard, J.P.; Perrone, T.; Gonzatti, M.; Bengaly, Z.; Rossignol, M.; Aso, P.M.; Vincendeau, P.; Cuny, G.; Boulangé, A.; Frutos, R..
Animal trypanosomosis is one of the most severe constraints to agricultural development in sub-Saharan Africa and is also an important disease of livestock in Latin America and Asia. The causative agents are various species of protozoan parasites belonging to the genus Trypanosoma, among which T. congolense and T. evansi are the major pathogenic species. The extracellular position of trypanosomes obliges us to consider both the parasite and its excreted/secreted factors in the course of the physiopathologic process. The advent of proteomics led us to propose a comparative approach of the proteome (i.e., the whole parasite content) and the secretome (i.e., naturally excreted/secreted molecules) of T. congolense and T. evansi with particular attention to...
Tipo: Conference Paper Palavras-chave: ANIMAL TRYPANOSOMOSIS; SECRETOME; VIRULENCE; PATHOGENICITY; PROTEOMICS; DIAGNOSIS; DRUG TARGETS.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201021915a35&uri=/notices/prodinra1/2010/08/
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Structural analysis of cassiicolin, a host-selective protein toxin from Corynespora cassiicola Inra
Barthe, P.; Pujade-Renaud, V.; Breton, F.; Gargani, D.; Thai, R.; Roumestand, C.; De Lamotte, F..
Cassiicolin is a host-selective toxin (HST) produced by the fungus Corynespora cassiicola (strain CCP). It is responsible for the Corynespora leaf fall (CLF) disease, which is among the main pathologies affecting rubber tree (Hevea brasiliensis). Working on purified cassiicolin and using electron microscopy, we have demonstrated that this 27-residue O-glycosylated protein is able to induce cellular damages identical to those induced by the fungus on rubber tree leaves and displays the same host selectivity. The solution structure and disulfide pairing of cassiicolin have been determined using NMR spectroscopy and simulated annealing calculations. Cassiicolin appears to have an original structure with a prolate ellipsoid shape. It adopts an over-all fold...
Tipo: Journal Article Palavras-chave: STRUCTURE 3D HST; NMR STRUCTURE; POST-TRANSLATIONAL MODIFICATIONS; PATHOGENICITY; HOST SELECTIVE TOXIN.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008998eec19&uri=/notices/prodinra1/2008/08/
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The pathogenicity for honey-bee larvae of microorganisms associated with european foulbrood National Institute of Agronomic Research
Bailey, L..
Tests made on larvae in normal bee colonies with pure cultures of Streptococcus pluton (White), Streptococcus faecalis Andrews and Horder, and Bacillus alvei Cheshire and Cheyne, three bacterial species commonly associated with European foulbrood (EFB), showed that S. pluton was the natural prirnary etiological agent. These results, together with other recent work, indicate that S. pluton is the cause of EFB throughout the world. Of the other associated bacterial species, Bacterium eurydice White, which is the most commnon, and S. faecalis probably have supplementary pathogenic effects. Bacillus alvei and other less common bacilli are saprophytes of the dead larvae.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; EUROPEAN FOULBROOD; INFECTIOUS DISEASE; MICROORGANISM; BACTERIA; SAPROPHYTE; STREPTOCOCCUS PLUTON; STREPTOCOCCUS FAECALIS; BACILLUS ALVEI; BACTERIUM EURIDYCE; PATHOGENICITY; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; MALADIE NOIRE; PARALYSIE CHRONIQUE; MALADIE INFECTIEUSE; MICROORGANISME; BACTERIE; SAPROPHYTE; STREPTOCOCCUS PLUTON; STREPTOCOCCUS FAECALIS; BACILLUS ALVEI; BACTERIUM EURIDYCE; PATHOGENICITE; LOQUE EUROPEENNE.
Ano: 1963 URL: http://hdl.handle.net/2174/370
Registros recuperados: 14
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