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Showing 1 to 20 of 27 for “"American Chestnut"”.
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An oral history of the American chestnut in southern Appalachia
… during the years preceding and following the chestnut blight pandemic. The project examined experiences from an environmental history perspective, addressing the economic and cultural significance of chestnut pre and post blight, and attitudes and feelings concerning American chestnut …
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Biology of virulent and hypovirulent Endothia parasitica on American chestnut (Castanea dentata)
… stems, and intact trees of large, surviving American chestnut indicated that some have heritable blight resistance. Some degree of resistance in American chestnut possibly would assist spread of hypovirulence (H) factors. The pathogenicity of the H isolate but not the V (virulent) isolate …
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Accelerated, graft-based germplasm conservation of American chestnut (Castanea dentata) in the South
… noninvasive method for conservation of rare American chestnut germplasm. Particularly when in situ conditions prevent trees from reaching sexual maturity, graft-propagation allows release from shade conditions and disease pressure to promote flowering. Collection of pollen from containerized …
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Population biology of Cryphonectria parasitica infected with Cryphonectria hypovirus 1 on American chestnut trees
In the early 1900's the American chestnut (Castanea dentata (Marsh.) Borkh.) was nearly destroyed by the introduction of the orange-pigmented, chestnut blight fungus (Cryphonectria parasitica (Murr.) Barr). Chestnut blight is less severe in Europe, where hypovirulent (= reduced virulence) strains …
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Evaluating the Adaptive Genomic Landscape of Remnant and Backcross American Chestnut Populations to Inform Germplasm Conservation
The American chestnut tree (Castanea dentata) is a deciduous tree that largely exists in the eastern United States along the Appalachian Mountain range. Approximately 100 years ago, a fungal pathogen (Cryphonectria parasitica) decimated chestnut populations, resulting in the loss of billions of …
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Early Successional Processes of Experimentally-Reclaimed Mine Sites in Eastern Ohio and the Restoration of American Chestnut
… demise due to an introduced pathogen, was the American chestnut (<i>Castanea dentata</i>). The original extent of the American chestnut and the Appalachian coal fields are nearly concurrent, possibly making these experimentally reclaimed sites ideal for restoration plantings of …
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Spread of White Hypovirulent Strains of Cryphonectria Parasitica Among American Chestnut Trees at the Lesesne State Forest
… and main stems of three 16-year-old grafted American chestnut trees at the Lesesne State Forest were sampled for Cryphonectria parasitica. Cankers were sampled in 1996 and 1997 at various distances from the main stem zone on the grafts (ground to 183 cm) that was inoculated in 1982 and 1983 …
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Cultural characteristics, vegetative compatibility, and spatial pattern of white hypovirulent strains of Cryphonectria parasitica on grafted American chestnut trees
… from the ground to 183 cm on three grafted American chestnut trees, were inoculated with a mixture of four European (white), and six, pigmented hypovirulent strains of Cryphonectria parasitica. A total of 202 C. parasitica isolates were recovered from 49 cankers located outside of the …
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A vascular flora of Bendabout Farm, Bradley County, Tennessee and survey of native Castanea Dentata (Marsh) Borkh. (Fagaceae, American chestnut)
… of surviving Castanea dentata (Marsh) Borkh. (American chestnut) within the study area. Both natural/semi-natural and altered habitats were described during initial habitat characterization. The study recorded 433 species from 261 genera in 106 families. The study documented 250 new records for …
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Roles of tannase and hydrolyzable tannins in chestnut blight
… parasitica</u>(Murr.) Barr), the causal agent of chestnut blight, was able to grow in total aqueous and tannin extracts from blight-susceptible American chestnut as well as in blight-resistant Chinese chestnut bark extracts, from winter and summer bark. Differences in the amount of conidial …
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Place in Appalachia: The Story of a Barn, a Tree, and a Community in the Hills of Southwestern Virginia
… these structures were built from the indigenous American chestnut tree and crafted using traditional building techniques. These structures are an important contribution to the vernacular of the Appalachian region, and much of this is due to the material presence of these structures as they give …
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Conservation of Castanea dentata genetic resources of the Southeastern United States
The ongoing effort by the American Chestnut Foundation to breed and reintroduce a blight resistant, locally adapted variety of American chestnut (Castanea dentata) requires a broad genetic base. To ensure adequate genetic diversity, genetic resources must be collected from throughout the native …
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Appalachian Surface Mine Reforestation Techniques: Effects of Grading, Cultural Treatments and Species Selection
… and improved survival and growth of hybrid American chestnut (Castanea dentata x Castanea mollissima), compared to conventional seeding. Surface water infiltration was positively correlated with herbaceous ground cover. On older mines, subsoil ripping to alleviate compaction improved tree …
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IDENTIFYING HIGHLY CONSERVED PATHOGENICITY GENES IN CHESTNUT BLIGHT AND POWDERY MILDEW FUNGI AS TARGETS FOR NOVEL FORMS OF HOST RESISTANCE
A bioinformatic search of the genomes of chestnut blight fungus, Cryphonectria parasitica (Cp), and the Arabidopsis powdery mildew fungus, Golovinomyces cichoracearum (Gc), yielded six suspected pathogenicity genes with homologues in both species. Deletion of these genes by homologous gene …
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The effects of different concentrations of phosphite on ectomycorrhiza formation by Pisolithus tinctorius in Castanea dentata
… to combat the devastating root-rot diseases of American chestnut (Castanea dentata) and other woody plants caused by the Oomycete Phytophthora cinnamomi. However, phosphite treatments may negatively affect the plant’s ability to form ectomycorrhizas, the mutualistic symbioses between tree roots …
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The Vascular Flora of Boyle County, KY
… rare species with state rankings were discussed: American chestnut (<italic>Castanea dentata</italic>), eastern eulophus (<italic>Perideridia americana</italic>), grass pink (<italic>Calopogon tuberosus</italic>), softleaf arrowwood (<italic>Viburnum molle</italic>), and yellow lady-slipper …
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The seasonal occurrence, soil distribution and flight characteristics of Curculio sayi (Coleoptera: Curculionidae) in mid-Missouri
Chestnut trees were once a dominant sight across the deciduous forest of the eastern and central United States, but following a devastating blight in the early 1900's much of the native range for this tree species has been lost. As interest in the restoration of the American chestnut tree …
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Vegetation distribution and site relationships in an Appalachian oak forest in southwest Virginia
… selective logging practices and to the demise of American chestnut.
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Leveraging the Landsat Archive to Track Understory Evergreen Shrub Expansions in the Coweeta Basin, North Carolina
Invasive species introductions, namely the chestnut blight fungus (Cryphonectria parasitica) and hemlock woolly adelgid (Adelges tsugae), have permanently altered the overstory canopy of Appalachian forests by causing the dramatic die-offs of two ecologically significant tree species, American …
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Chloroplast DNA phylogenetics of the North American chestnuts and chinquapins (Castanea Mill., Fagaceae)
… relationships and genetic structure of the North American Castanea were investigated using chloroplast DNA sequence data. Six plastome loci were PCR-amplified and sequenced in 77 accessions representing the three currently recognized North American Castanea species. Diagnostic morphological …
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