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Oak wilt and the newly emerging emerald ash borer have the potential to devastate other important North American tree species with large geographical and cultural significance. Range expansion of oak wilt to the Western United States (or to other continents) is a major concern. The asexual stage of oak wilt was first described in 1942 in Wisconsin.
Raffaelea quercivora is a species of fungus in the family Ophiostomataceae. It causes Japanese oak wilt disease, and is spread by the ambrosia beetle (Platypus quercivorus). It has small obovoid to pyriform sympodioconidia and slender, long conidiophores. The fungus has been isolated from the body surfaces and mycangia of the beetle. [1]
Platypus quercivorus, the oak ambrosia beetle, is a species of weevil and pest of broad-leaved trees. [2] This species is most commonly known for vectoring the fungus responsible for excessive oak dieback in Japan since the 1980s. [3] It is found in Japan, India, Indonesia, New Guinea, and Taiwan.
Experts from the Texas A&M Forest Service recommend not trimming your trees until June to avoid infecting them with oak wilt, a deadly tree disease
Oak wilt is a fungal caused by Bretziella fagacearum, is a disease originating in eastern Russia. It can slowly or quickly kill an oak tree when the tree reacts to the fungus by plugging its own cambial tissue while attempting to block the spread of the fungus. This plug prevents the cambium vascular tissue from delivering nutrients and water ...
Ceratocystis is a genus of fungi in the family Ceratocystidaceae. [1] Several species are important plant pathogens , causing diseases such as oak wilt and pineapple black rot . Species
The oak timberworm is a known vector of the destructive fungus Bretziella fagacearum, which causes oak wilt. [6] Oak wilt is major cause of oak mortality in some regions and has been detected in 24 US states. [10] Oak wilt can cause rather sudden mortality in host trees due to the disruption of sap and water flow in the xylem. [11]
Non-native invasive species can disrupt ecosystems because they do not have natural predators, or other ecological checks-and-balances. Thus, with less competition from native species, non-native populations can explode. [9] Invasive insects and pathogens have eliminated entire tree species from forests of the United States in as little as decades.