Resistance To The Downy Mildew
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Behavior of grape breeding lines with distinct resistance alleles to downy mildew (Plasmopara viticola)
Abstract Downy mildew (Plasmopara viticola) is the main grapevine disease in humid regions. In the present investigation, marker-assisted selection (MAS) was used to develop grapevine lines homozygous in loci Rpv1 and Rpv3 for resistance against P. viticola. The experimental populations UFSC-2013-1 (n = 420) and UFSC-2013-2 (n = 237) were obtained by self-po
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-06
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2. 'BRS Vitória' - a novel seedless table grape cultivar exhibiting special flavor and tolerance to downy mildew (Plamopara viticola)
'BRS Vitória' is a novel cultivar of black seedless table grape. Its main traits meet the most important demands from the viticulture segment in Brazil.It is recommended for cultivation in tropical and subtropical areas, with excellent horticultural performance, high bud fecundity and resistance to downy mildew, the most important disease which affects grap
Crop Breed. Appl. Biotechnol.. Publicado em: 2014-10
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3. Mutations in retrotransposon AtCOPIA4 compromises resistance to Hyaloperonospora parasitica in Arabidopsis thaliana
Retrotransposons (RTEs) are a principal component of most eukaryotic genomes, representing 50%-80% of some grass genomes. RTE sequences have been shown to be preferentially present in disease resistance gene clusters in plants. Arabidopsis thaliana has over 1,600 annotated RTE sequences and 56 of these appear to be expressed because of the exact expressed se
Genetics and Molecular Biology. Publicado em: 11/12/2009
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4. Caracterização genética da resistência ao míldio (Peronosclerospora sorghi) em sorgo (Sorghum bicolor L. Moench) / Genetic characterization of the resistance to the downy mildew (Peronosclerospora sorghi) in sorghum (Sorghum bicolor L. Moench)
No presente trabalho, foram avaliadas 13 linhagens de sorgo do programa de melhoramento genético da Embrapa Milho e Sorgo quanto à reação a nove raças de Peronosclerospora sorghi. Dentre as linhagens foram identificadas cinco fontes de resistência às nove raças (BTx623, Tx430, SC414-12, QL- 3 e ARG-1) e duas linhagens (SC283 e ATF14B) susceptíveis �
Publicado em: 2008
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5. Mutants of Downy Mildew Resistance in Lactuca Sativa (Lettuce)
As part of our investigation of disease resistance in lettuce, we generated mutants that have lost resistance to Bremia lactucae, the casual fungus of downy mildew. Using a rapid and reliable screen, we identified 16 distinct mutants of Latuca sativa that have lost activity of one of four different downy mildew resistance genes (Dm). In all mutants, only a s
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6. A Genetic Map of Lettuce (Lactuca sativa L.) with Restriction Fragment Length Polymorphism, Isozyme, Disease Resistance and Morphological Markers
A detailed linkage map of lettuce was constructed using 53 genetic markers including 41 restriction fragment length polymorphism (RFLP) loci, five downy mildew resistance genes, four isozyme loci and three morphological markers. The genetic markers were distributed into nine linkage groups and cover 404 cM which may be 25-30% of the lettuce genome. The major
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7. Arabidopsis Downy Mildew Resistance Gene RPP27 Encodes a Receptor-Like Protein Similar to CLAVATA2 and Tomato Cf-91
The Arabidopsis Ler-RPP27 gene confers AtSgt1b-independent resistance to downy mildew (Peronospora parasitica) isolate Hiks1. The RPP27 locus was mapped to a four-bacterial artificial chromosome interval on chromosome 1 from genetic analysis of a cross between the enhanced susceptibility mutant Col-edm1 (Col-sgt1) and Landsberg erecta (Ler-0). A Cf-like cand
American Society of Plant Biologists.
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8. A mutation within the leucine-rich repeat domain of the Arabidopsis disease resistance gene RPS5 partially suppresses multiple bacterial and downy mildew resistance genes.
Recognition of pathogens by plants is mediated by several distinct families of functionally variable but structurally related disease resistance (R) genes. The largest family is defined by the presence of a putative nucleotide binding domain and 12 to 21 leucine-rich repeats (LRRs). The function of these LRRs has not been defined, but they are speculated to
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9. Plant eR Genes That Encode Photorespiratory Enzymes Confer Resistance against Disease
Downy mildew caused by the oomycete pathogen Pseudoperonospora cubensis is a devastating foliar disease of cucurbits worldwide. We previously demonstrated that the wild melon line PI 124111F (PI) is highly resistant to all pathotypes of P. cubensis. That resistance was controlled genetically by two partially dominant, complementary loci. Here, we show that u
American Society of Plant Biologists.
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10. Arabidopsis SGT1b Is Required for Defense Signaling Conferred by Several Downy Mildew Resistance Genes
We describe the identification of a mutant in the Arabidopsis accession Columbia (Col-0) that exhibits enhanced downy mildew (edm1) susceptibility to several Peronospora parasitica isolates, including the RPP7-diagnostic isolate Hiks1. The mutation was mapped to chromosome IV and characterized physically as a 35-kb deletion spanning seven genes. One of these
American Society of Plant Biologists.
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11. The Arabidopsis downy mildew resistance gene RPP5 shares similarity to the toll and interleukin-1 receptors with N and L6.
Plant disease resistance genes operate at the earliest steps of pathogen perception. The Arabidopsis RPP5 gene specifying resistance to the downy mildew pathogen Peronospora parasitica was positionally cloned. It encodes a protein that possesses a putative nucleotide binding site and leucine-rich repeats, and its product exhibits striking structural similari
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12. Arabidopsis is susceptible to infection by a downy mildew fungus.
A population of Arabidopsis thaliana growing locally in a suburb of Zürich called Weiningen was observed to be infected with downy mildew. Plants were collected and the progress of infection was investigated in artificial inoculations in the laboratory. The plants proved to be highly susceptible, and pronounced intercellular mycelial growth, haustoria forma