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pinus lambertiana/ampolla
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13 resultados
Random amplified polymorphic DNA markers tightly linked to a gene for resistance to white pine blister rust in sugar pine.
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We have genetically mapped a gene for resistance to white pine blister rust (Cronartium ribicola Fisch.) in sugar pine (Pinus lambertiana Dougl.) by using an approach which relies on three factors: (i) the ability to assay for genetic markers in the haploid stage of the host's life cycle, using
White pine blister rust: simply inherited resistance in sugar pine.
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Segregation ratios of offspring from disease-free sugar pines suggest that resistance to the white pine blister rust fungus is under major gene control and simply inherited.
Evidence of Cytoplasmic Inheritance of Virulence in Cronartium ribicola to Major Gene Resistance in Sugar Pine.
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ABSTRACT Tests for Mendelian segregation of virulence and avirulence in Cronartium ribicola, causal agent of white pine blister rust, to a major gene (R) for resistance in sugar pine were made using haploid basidiospore progenies from single diploid telia as inoculum on resistant genotypes. The
Interspecific phylogenetic analysis enhances intraspecific phylogeographical inference: a case study in Pinus lambertiana.
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Pinus lambertiana (sugar pine) is an economically and ecologically important conifer with a 1600-km latitudinal range extending from Oregon, USA, to northern Baja California, Mexico. Like all North American white pines (subsect. Strobus), sugar pine is highly susceptible to white pine blister rust,
Genomic basis of white pine blister rust quantitative disease resistance and its relationship with qualitative resistance
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The genomic architecture and molecular mechanisms controlling variation in quantitative disease resistance loci are not well-understood in plant species and have been barely studied in long-generation trees. Quantitative trait loci mapping and genome wide association studies were combined to test a
Genetic specificity in the white pine-blister rust pathosystem.
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ABSTRACT Four of eight white pine species native to western North America surveyed for resistance to white pine blister rust by artificial inoculation showed classical hypersensitive reactions (HR) at frequencies ranging from very low to moderate. Mendelian segregation, indicating a single dominant
Influence of host resistance on the genetic structure of the white pine blister rust fungus in the western United States.
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Cronartium ribicola, the causal agent of white pine blister rust, has been devastating to five-needled white pines in North America since its introduction nearly a century ago. However, dynamic and complex interactions occur among C. ribicola, five-needled white pines, and the environment. To
Origin and distribution of cr2, a gene for resistance to white pine blister rust in natural populations of Western white pine.
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ABSTRACT The distribution and frequency of the Cr2 gene for resistance to white pine blister rust (Cronartium ribicola) in western white pine (Pinus monticola) was surveyed in natural populations of the host by inoculation of open-pollinated seedlings from 687 individual seed parents from throughout
Sequence of the Sugar Pine Megagenome.
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Until very recently, complete characterization of the megagenomes of conifers has remained elusive. The diploid genome of sugar pine (Pinus lambertiana Dougl.) has a highly repetitive, 31 billion bp genome. It is the largest genome sequenced and assembled to date, and the first from the subgenus
Cultured cells of white pine show genetic resistance to axenic blister rust hyphae.
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Hypersensitive resistance to axenically cultured Cronartium ribicola was displayed by subcultured callus of Pinus lambertiana. Cellular resistance to a destructive rust disease can now be studied at the macromolecular level through use of cloned cells of both host and pathogen in a system amenable
Virulence gene distribution and dynamics of the white pine blister rust pathogen in Western north america.
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ABSTRACT We assayed the distribution and frequency of two genes of the blisterpathogen with specific virulence to major resistance genes in sugar pine and western white pine in inoculum from extensive parts of the hosts' ranges. The genes, vcr1 and vcr2, differentially neutralize the cognate
Characterization of Pin m III cDNA in western white pine.
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Maximum accumulation of Pin m III protein in western white pine (Pinus monticola Dougl. ex D. Don) needles occurred during the winter months. To characterize Pin m III, an expression cDNA library from poly(A)+ mRNA of needles was immunoscreened and the full length cDNA was cloned. An open reading
Comparative Transcriptomics Among Four White Pine Species.
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Conifers are the dominant plant species throughout the high latitude boreal forests as well as some lower latitude temperate forests of North America, Europe, and Asia. As such, they play an integral economic and ecological role across much of the world. This study focused on the characterization of
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