Friday, May 31, 2019

Chestnut Blight and American Chestnut Trees Essay -- Ecology Conservat

Chestnut Blight and American Chestnut TreesSince the early 1900s a disease known as Chestnut Blight has infect many American Chestnut trees and causing their removal from forests. A greater look at the history of this fungus as well as the mechanisms of action testament allow us to learn on how to preserve the American chestnut. At one point, the American chestnut was virtually eliminated. With the help of government acts and conservation agencies, the American chestnut is slowly growing back in population. Two regularitys of restoration of the chestnut include a hybridization and the use of hypovirulant strains. This issue shows a regeneration of interest from ecologists to those in the timber industry who cannot lumber Asian species of chestnut primarily because of their size.In the 1880s a harmful fungus known as provoke, inhabited the fall in States from imported Japanese chestnut trees. Blight quickly spread, killing chestnuts and chinquapins, which is another species of chestnut that produces 1 nut per bur. In 1904, Chestnut blight appeared infecting trees in unused York City and spread at a rate of 20-50 miles per year. By 1906, W.A. Murrill reported that this disease is known to occur in New Jersey, Maryland, District of Columbia, and Virginia. In 1912, the major planet Quarantine Act was passed to reduce the chances of plant deterioration or devastation prevention. Chestnut Blight or Chestnut Bark Disease was originally anchor in 1904 and within 50 years, it spread across the eastern United States, from Maine to Georgia and as far west as the edge of Michigan. By 1950, the American chestnut was essentially eliminated as a forest tree. In 1972, importation from Italy gave a biological control in which a virus helped prevent the blight f... ...thesis does, however, lack experimental evidence of any kind.The American chestnut which was once almost eliminated from existence in the late 1950s has once again emerged thanks to conservation efforts. Chestnut blight, a deadly fungus, has the ability to kill chestnut trees. However, some chestnut species in Asia have resistance to blight. As a result, a method of conservation has been through hybridizing American species with Asian species. Another method of conservation has been through hypovirulence strains in the infection is reduced. Independently, this hypovirulence method may be a reason wherefore some American chestnuts are surviving despite being infested with chestnut blight. This issue remains important to both the timber industry, although that isnt why chestnuts are being restored, and certain ecological organizations including the Nature Conservancy.

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