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Registros recuperados: 11
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A novel natural mutation in HC-Pro responsible for mild symptomatology of Zucchini yellow mosaic virus (ZYMV, Potyvirus) in cucurbits Inra
Desbiez, C.; Girard, M.; Lecoq, H..
A natural mild isolate of Zucchini yellow mosaic virus was found to contain a mutation in the helper component (HC-Pro) within a conserved motif, “CDNQLD”, located 12 residues downstream from the “FRNK” motif involved in symptom severity. Introducing the mutation in an infectious cDNA clone of ZYMV resulted in an almost complete absence of symptoms, although viral accumulation was only partially reduced. The FRNK(X)12CDNQLD sequence might be part of a larger motif that is conserved in potyviruses and plays a role in symptomatology and/or silencing inhibition
Tipo: Journal Article Palavras-chave: POTYVIRUS; ZUCCHINI YELLOW MOSAIC VIRUS; ZYMV; RT-PCR; ELISA TESTS; DISEASE RESISTANCE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010efc00e54&uri=/notices/prodinra1/2010/11/
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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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Constraints on evolution of virus avirulence factors predict the durability of corresponding plant resistances Inra
Janzac, B.; Fabre, F.; Palloix, A.; Moury, B..
Understanding the factors driving pathogen emergence and re-emergence is a major challenge, particularly in agriculture, where the use of resistant plant cultivars imposes strong selective pressures on plant pathogen populations and leads frequently to 'resistance breakdown'. Presently, durable resistances are only identified after a long period of large-scale cultivation of resistant cultivars. We propose a new predictor of the durability of plant resistance. Because resistance breakdown involves modifications in the avirulence factors of pathogens, we tested for correlations between the evolutionary constraints acting on avirulence factors or their diversity and the durability of the corresponding resistance genes in the case of plant–virus interactions....
Tipo: Journal Article Palavras-chave: PLANT VIRUS INTERACTIONS; DURABLE RESISTANCE; DISEASE RESISTANCE; AVIRULENCE FACTORS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010af6f5ac2&uri=/notices/prodinra1/2010/11/
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Development and evaluation of robust molecular markers linked to disease resistance in tomato for distinctness, uniformity and stability testing Inra
Arens, P.; Mansilla, C.; Deinum, D.; Cavellini, L.; Moretti, A.; Rolland, S.; van der Schoot, H.; Calvache, D.; Ponz, F.; Collonnier, C.; MATHIS, R.; Smilde, D.; Caranta, C.; Vosman, B..
Abstract Molecular markers linked to phenotypically important traits are of great interest especially when traits are diYcult and/or costly to be observed. In tomato where a strong focus on resistance breeding has led to the introgression of several resistance genes, resistance traits havebecome important characteristics in distinctness, uniformity and stability (DUS) testing for Plant Breeders Rights (PBR)applications. Evaluation of disease traits in biological assays is not always straightforward because assays areoften inXuenced by environmental factors, and diYculties in scoring exist. In this study, we describe the development and/or evaluation of molecular marker assays for the Verticillium genes Ve1 and Ve2, the tomato mosaic virus Tm1 (linked...
Tipo: Journal Article Palavras-chave: TOMATO MOSAIC VIRUS; MOLECULAR MARKERS; DISEASE RESISTANCE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20109ed16edf&uri=/notices/prodinra1/2010/04/
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Development of a high resolution intra-specific map of pepper (Capsicum annuum L.) and QTL analysis for horticultural traits Inra
Barchi, L..
Tipo: Thesis Palavras-chave: MICROSATELLITE; SSR; PEPPER; GENETIC MAP; MARKER ASSISTED SELECTION; DISEASE RESISTANCE; MORPHOLOGY.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011b927d17c&uri=/notices/prodinra1/2011/04/
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Differential gene expression in nearly isogenic lines with QTL for partial resistance to Puccinia hordei in barley Inra
Chen, XW; Niks, E.; Hedley, E.; Morris; Druka; Marcel, T.; Vels, A.; Waugh, R..
The barley-Puccinia hordei (barley leaf rust) pathosystem is a model for investigating partial disease resistance in crop plants and genetic mapping of phenotypic resistance has identified several quantitative trait loci (QTL) for partial resistance. Reciprocal QTL-specific near-isogenic lines (QTL-NILs) have been developed that combine two QTL, Rphq2 and Rphq3, the largest effects detected in a recombinant-inbred-line (RIL) population derived from a cross between the super-susceptible line L94 and partially-resistant line Vada. The molecular mechanism underpinning partial resistance in these QTL-NILs is unknown.Results: An Agilent custom microarray consisting of 15,000 probes derived from barley consensus EST sequences was used to investigate genome-wide...
Tipo: Journal Article Palavras-chave: MOISISSURE; RESISTANCE AUX MALADIES; OIDIUM; AUTODEFENSE DE LA PLANTE HETEROLOGOUS RUST FUNGI; DISEASE RESISTANCE; QUANTITATIVE RESISTANCE; PATHOGEN INTERACTIONS ; RHIZOCTONIA-SOLANI; NATURAL-PRODUCTS; PLANT IMMUNITY; POWDERY MILDEW; SHEATH BLIGHT; CELL-WALL .
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20114ae9d2fc&uri=/notices/prodinra1/2011/06/
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Low level of polymorphism in two putative NPR1 homologs in the Vitaceae familily Inra
Bergeault, K.; Bertsch, C.; Merdinoglu, D.; Walter, B..
BackgroundGrapevine is subjected to numerous pests and diseases resulting in the use of phytochemicals in large quantities. The will to decrease the use of phytochemicals leads to attempts to find alternative strategies, implying knowledge of defence mechanisms. Numerous studies have led to the identification of signalling pathways and regulatory elements involved in defence in various plant species. Nonexpressor of Pathogenesis Related 1 (NPR1) is an important regulatory component of systemic acquired resistance (SAR) in Arabidopsis thaliana.ResultsTwo putative homologs of NPR1 gene were found in the two sequenced grapevine genomes available in the Genoscope database for line 40024 and in the IASMA database for Pinot noir ENTAV 115. We named these two...
Tipo: Journal Article Palavras-chave: DISEASE RESISTANCE; GENES; GENETIC POLYMORPHISM; GENOMES; GENOMICS; GRAPES; PATHOGENESIS; PHYTOCHEMICALS; PLANT DISEASES; PLANT PATHOGENS; PLANT PESTS; POLYMERASE CHAIN REACTION; ARABIDOPSIS THALIANA; PCR; PHYTOPATHOGENS; RESISTANCE TO DISEASE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201016bc7d11&uri=/notices/prodinra1/2010/11/
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Natural variation and functional analysis provide evidence for co-evolution between pepper eIF4E and potyviral Vpg Inra
Caranta, C.; Charron, C.; Nicolai, M.; Gallois, J.L.; Palloix, A.; Robaglia, C.; De Mita, S.; David, J..
Tipo: Conference Paper Palavras-chave: POTYVIRUS eIF4E; VIRAL PROTEIN; PVY; TEV; POTATO VIRUS Y; TOBACCO ETCH VIRUS; DISEASE RESISTANCE; VPg GENE; POLYMORPHISM.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008dbf8e6ba&uri=/notices/prodinra1/2008/11/
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Potential candidate genes for improving Rice disease resistance Inra
Delteil, A.; Zhang, J.; Lessard, P.; Morel, J.B..
iseases caused by fungal and bacterial pathogens like Magnaporthe oryzae and Xanthomonas oryzae pv. oryzae are responsible for considerable yield loss. Up to now, in rice, the modification of the expression of more than 60 genes from diverse origins has shown beneficial effects with respect to disease resistance. In this paper, we review this large set of data to identify the best genes and strategies to achieve disease resistance by transgenic approaches. Altered expression of genes involved in signal transduction and transcription may lead to many unwanted side effects, like lesion mimic phenotypes. Moreover, modification of resistance to abiotic stress has been neglected and should be carefully examined in the future. Genes like resistance genes and...
Tipo: Journal Article Palavras-chave: RICE; PLANT TRANSGENIC; DISEASE RESISTANCE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201028d7f758&uri=/notices/prodinra1/2010/10/
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Research strategies to improve honeybee health in Europe Inra
Moritz, R.F.A.; de Miranda, J.; Fries, I.; Le Conte, Y.; Neumann, P.; Paxton, R.J..
Understanding the fundaments of colony losses and improving the status of colony health will require cross-cutting research initiatives including honeybee pathology, chemistry, genetics and apicultural extension. The 7th framework of the European Union requested research to empirically and experimentally fill knowledge gaps on honeybee pests and diseases, including ’Colony Collapse Disorder’ and the impact of parasites, pathogens and pesticides on honeybee mortality. The interactions among these drivers of colony loss will be studied in different European regions, using experimental model systems including selected parasites (e.g. Nosema and Varroa mites), viruses (Deformed Wing Virus, Black Queen Cell Virus, Israeli Acute Paralysis Virus) and model...
Tipo: Journal Article Palavras-chave:  INSECTE SOCIAL;  ABEILLE DOMESTIQUE;  PATHOLOGIE;  DIAGNOSTIC;  RESISTANCE AUX MALADIES;  RECHERCHE SCIENTIFIQUE;  SYNDROME PERTE DES COLONIES;    SOCIAL INSECT;  HONEYBEE;  SCIENTIFIC RESEARCH;  CCD;  COLONY COLLAPSE DISORDER; PATHOLOGY; DIAGNOSIS; DISEASE RESISTANCE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010b2335845&uri=/notices/prodinra1/2010/11/
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Transcript Profiling of Poplar Leaves upon Infection with Compatible and Incompatible Strains of the Foliar Rust Melampsora larici-populina Inra
Rinaldi, C.; Kohler, A.; Frey, P.; Duchaussoy, F; Ningre, F; Couloux, A.; Wincker, P; Le Thiec, D.; Fluch, S.; Martin, F.; Duplessis, S..
To understand key processes governing defense mechanisms in poplar (Populus spp.) upon infection with the rust fungus Melampsora larici-populina, we used combined histological and molecular techniques to describe the infection of Populus trichocarpa X Populus deltoides 'Beaupre' leaves by compatible and incompatible fungal strains. Striking differences in host-tissue infection were observed after 48-h postinoculation (hpi) between compatible and incompatible interactions. No reactive oxygen species production could be detected at infection sites, while a strong accumulation of monolignols occurred in the incompatible interaction after 48 hpi, indicating a late plant response once the fungus already penetrated host cells to form haustorial infection...
Tipo: Journal Article Palavras-chave: OBLIGATE BIOTROPHIC PATHOGEN; EXPRESSED SEQUENCE TAGS; FOR-GENE SPECIFICITY; HYPERSENSITIVE RESPONSE; HYBRID POPLAR; DISEASE RESISTANCE; LEAF RUST; FLAX RUST; AVIRULENCE GENES; GENOMIC SEQUENCE.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20072887511d&uri=/notices/prodinra1/2011/04/
Registros recuperados: 11
Primeira ... 1 ... Última
 

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