21 research outputs found

    Letter to the Editor : Attitudes among Spanish general dentists in relation to burning mouth syndrome: Results of a national survey

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    Thouret Jacques-Guillaume, Lapoule Jean-Denis-Louis, Talleyrand Périgord Charles Maurice de, Goupil de Préfeln Guillaume François, Populus Marc Etienne, Cochard Claude Alexis, Muguet de Nanthou François Felix, Merlin (de Douai), Toulongeon Emmanuel-François, vicomte de, Tronchet François Denis. Discussion de l'article 4 du titre II du décret sur les droits féodaux, lors de la séance du 27 février 1790. In: Archives Parlementaires de 1787 à 1860 - Première série (1787-1799) Tome XI - Du 24 décembre 1789 au 1er mars 1790. Paris : Librairie Administrative P. Dupont, 1880. pp. 725-727

    Natural Variation in Partial Resistance to Pseudomonas syringae Is Controlled by Two Major QTLs in Arabidopsis thaliana

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    BACKGROUND: Low-level, partial resistance is pre-eminent in natural populations, however, the mechanisms underlying this form of resistance are still poorly understood. METHODOLOGY/PRINCIPAL FINDINGS: In the present study, we used the model pathosystem Pseudomonas syringae pv. tomato DC3000 (Pst) - Arabidopsis thaliana to study the genetic basis of this form of resistance. Phenotypic analysis of a set of Arabidopsis accessions, based on evaluation of in planta pathogen growth revealed extensive quantitative variation for partial resistance to Pst. It allowed choosing a recombinant inbred line (RIL) population derived from a cross between the accessions Bayreuth and Shahdara for quantitative genetic analysis. Experiments performed under two different environmental conditions led to the detection of two major and two minor quantitative trait loci (QTLs) governing partial resistance to Pst and called PRP-Ps1 to PRP-Ps4. The two major QTLs, PRP-Ps1 and PRP-Ps2, were confirmed in near isogenic lines (NILs), following the heterogeneous inbred families (HIFs) strategy. Analysis of marker gene expression using these HIFs indicated a negative correlation between the induced amount of transcripts of SA-dependent genes PR1, ICS and PR5, and the in planta bacterial growth in the HIF segregating at PRP-Ps2 locus, suggesting an implication of PRP-Ps2 in the activation of SA dependent responses. CONCLUSIONS/SIGNIFICANCE: These results show that variation in partial resistance to Pst in Arabidopsis is governed by relatively few loci, and the validation of two major loci opens the way for their fine mapping and their cloning, which will improve our understanding of the molecular mechanisms underlying partial resistance

    Eradication of orchid viruses by chemotherapy from in-vitro cultures of Cymbidium

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    International audienc

    Production of virus-free dahlia by : meristem-culture and virus detection through cDNA probes and elisa

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    International audienc
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