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Urushiol-induced contact dermatitis (also called Toxicodendron dermatitis or Rhus dermatitis) is a type of allergic contact dermatitis caused by the oil urushiol found in various plants, most notably sumac family species of the genus Toxicodendron: poison ivy, poison oak, poison sumac, and the Chinese lacquer tree. [1]
Conidiophores form non-infectious conidia that are released both in conditions of wetness and drought. [2] [7] The most favorable environment for the pathogen is when there is an extended period of moisture such as fog or rain, which prevents the leaves from drying out. [8] Young trees growing in shade are therefore more susceptible.
Pollen is the problem, the say. Between now and May, pollen from birch, maple and oak trees, for example, are wreaking havoc on allergies, causing red and itchy eyes, runny noses and sneezing fits.
Spring is creeping up fast in the United States, and that means warmer weather is on the horizon after a rough winter in some regions, but for those who suffer from seasonal allergies, there may ...
According to Pollen.com, the pollen count in Myrtle Beach has been high since yesterday and is predicted to continue rising through Saturday. Elm, juniper and alder trees are today’s main culprits.
OAS is the result of cross-reactivity between antigens of tree or weed pollen and antigens found in certain fruits and vegetables. Therefore, OAS is only seen in people with seasonal pollen allergies, and mostly people who are allergic to tree pollen. [3] It is usually limited to ingestion of uncooked fruits or vegetables. [3]
Selecting one sex over another when planting trees can lead to an increase in pollen and allergies, one researcher says. ... the USDA cloned more than 100 maple trees, all of which were male ...
Acer tegmentosum, the Manchurian striped maple, [3] is a species of deciduous tree in the maple genus, which is native to the southern part of the Russian Far East (along the Amur and Ussuri rivers in Primorsky Krai), northeastern China (Heilongjiang, Jilin, Liaoning), and Korea. [4] Acer tegmentosum is cold-hardy down to USDA hardiness zone 5a ...