Chestnut blight

Cryphonectria parasitica, a filamentous, ascomycete fungus, is the causal agent of the chestnut blight5,14 which was introduced to North America from Japan circa 190412,14.The chestnut blight infects all members of the Castanea family14, and some members of the genus Quercus though C. parasitica infections are superficial14. A C. parasitica infection typically begins at a branch node or wound in the tree’s bark 14. Once a spore has entered the tree, hyphal growth begins14. When the fungi’s hyphae

Invasive species are organisms that are not native to an ecosystem and cause harm to it. These organisms are capable of bringing about a great deal of damage to the ecosystems they are foreign to. This can range from disrupting the growth of the environment it has taken over to completely decimating other species. The introduction of invasive species to new environments often involves humans. The way that invasive species are introduced to a new environment varies greatly. Invasive species may be

Name: Fire Blight Scientific Name: Erwinia amylovora Origin: Was first identified in Hudson Valley, New York in the 1780's. It spread throughout North America and accidentally got imported to England and Egypt. Present in: New Zealand-1919~nurse trading Bermuda- before 1938 Wales- 1956/57~food England- 1956/57~food Egypt-early 1960's Effects/Causes: Erwinia amylovora is an exotic plant pest that causes fire blight that is becoming a serious threat to Australia's apple and pear industry. Rain and

disease brought about very serious influences of the society. A fungal sickness phytopthora overdue blight that purpose the iris potato famine, which made 2 million people both starved or left their land. The devastation of French wine enterprise by way of the fungal disorder powdery mold and downy mold till the prevention Bordeaux mixture found to govern the disorder the fungal disorder chestnut blight could be very dangerous and remains as a hassle in the United States. It infects and kills the elm

The mountain pine beetle (MPB; Dendroctonus ponderosae) is a native insect of North America that induces pine tree mortality from bark boring infestation. On average, the MPB lives for one year with four stages of development (egg, larva, pupa and adult). The MPB remains burrowed within a host pine tree throughout all four stages of its life except in the late fall when the mature beetles leave a brood tree in search of a new reproduction site. When a MPB finds an optimal tree for infestation, pheromones

result of the pathogen. The spread of the blight continued with approximately over a million trees dying each year. Going forward to the mid-20th century, Castanea dentata is almost extinct in American forests. The blight infection has prevented the American chestnut ability to grow to its full height, and only exist as shrubs that sprout from trees that were infected with the blight. Despite being from the same species, different species of the chestnut responded differently to the fungal infection

The Chestnut blight is a fungus which is also called the chestnut bark disease. The scientific name for this is Cryphonectria Parasitica (Murril) Barr. The organism that assaults the American chestnut has the appearance of an extensive ulcer, and is regularly found on the tree trunk or other tree surface range. It enters tree wounds and splits and develops in and under the bark, executing the territory around the tree twig, extension or trunk. Yellow or orange spores (called pycnidia) radiate from

The American elm, at one time was a popular shade tree along many city streets in the eastern United States ( Buyers, 1996). It was popular, because of its vase shape, which provide good shade for houses along busy streets. The Dutch Elm Disease was initially discovered in the Netherlands in 1921 (Buyers, 1996). It was around the early 1930s when it was first discovered in Ohio and a few other states in the East, and by 1973 it had spread as far west as California ( Buyers, 1996). People at the time

White nose syndrome is a fungus that grows on hibernating bats’ muzzles that has killed nearly 6 million of them. Although traditionally found in most if not all eastern states, bats in caves as far south as Mississippi, as far west as Oklahoma, and as far north as Canada have been found with the devastating fungus. Infecting 47 species of bats, the disease was first noticed in the winter of 2006-2007 in New York, because of the odd behavior of the bats. It was later discovered that the fungus

The Best Man Gets the Win Once upon a time in the middle of fall, leaves were falling from the trees like feathers. Bruce, a golden colored wolf, sat on a rock looking at the city below him. Hoping that maybe this year would be the year he can prove himself worthy to Panthera, the Queen of Sundham. Her old companion recently past and, it is time for a replacement. To take on such a position, one must a pass rigorous task, which will test your strengths. The winner will be Panthera’s husband Bruce