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Overview. Cryphonectria parasitica is a parasitic fungus of chestnut trees. This disease came to be known as chestnut blight. Naturally found in South East Asia, accidental introductions led to invasive populations of C. parasitica in North America and Europe. In the first half of the 20th century, the fungal disease had a devastating economic ...
The American chestnut (Castanea dentata) is a large, fast-growing deciduous tree of the beech family native to eastern North America. [3] As is true of all species in the genus Castanea, the American chestnut produces burred fruit with edible nuts. The American chestnut was once one of the most important forest trees throughout its range, [4][5 ...
The mission of The American Chestnut Foundation (TACF) is to restore the American chestnut tree to the forests of Eastern North America by breeding genetically diverse blight-resistant trees, evaluating various approaches to the management of chestnut pests and pathogens, and reintroducing the trees into the forest in an ecologically acceptable manner.
The chestnut blight was introduced in the late 19th century with the Japanese chestnut and decimated the once-widespread American chestnut tree. [9] Native un-modified trees are killed from the ground up by the blight, and only the root system survives.
Leaf spot is the most common disease for chestnut trees (Mycosphaerella maculiformis). It is known as cylindrosporium leaf spot disease, after its summer conidium form Cylindrosporium castaneae. The pathogens spend the winter in the white spots of the fallen leaves. At spring time, it reinfects the new leaves.
Castanea mollissima. † Percentages estimated using US recommendations for adults, [2] except for potassium, which is estimated based on expert recommendation from the National Academies. [3] Castanea mollissima, also known as the Chinese chestnut, is a species of chestnut tree in the family Fagaceae that is native to China, Taiwan, and Korea. [4]
Cryphonectria is a fungal genus in the order Diaporthales. The most well-known and well-studied species in the genus is Cryphonectria parasitica, the species which causes chestnut blight. The genus was, for a time, considered synonymous with Endothia, but the two are now recognised as distinct. Taxonomic studies in 2006 limited the genus to ...
Meyer is also responsible for collecting specimens in China that showed that the fungus now known as Cryphonectria parasitica, responsible for the Chestnut blight disease first observed in the Bronx Zoo in 1904 and that had started killing American chestnut trees, was present on Chinese trees, confirming suspicions that it had originated from ...