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  2. Oak wilt - Wikipedia

    en.wikipedia.org/wiki/Oak_wilt

    Oak wilt is a devastating exotic disease, killing some trees rapidly in a single season. [7] Oak wilt is an important disease in urban areas where trees are highly valued. . The disease reduces property values because of the loss of trees and is economically costly to the property owner since they or the local government must pay for tree remo

  3. Phytophthora ramorum - Wikipedia

    en.wikipedia.org/wiki/Phytophthora_ramorum

    Phytophthora ramorum is the oomycete known to cause the disease sudden oak death (SOD). The disease kills oak and other species of trees and has had devastating effects on the oak populations in California and Oregon, as well as being present in Europe. Symptoms include bleeding cankers on the tree's trunk and dieback of the foliage, in many ...

  4. Taphrina caerulescens - Wikipedia

    en.wikipedia.org/wiki/Taphrina_caerulescens

    Taphrina caerulescens is a species of fungus in the family Taphrinaceae. It is a pathogenic Ascomycete fungus that causes oak leaf blister disease on various species of oak trees (Quercus spp.). The associated anamorph species is Lalaria coccinea, described in 1990. [2] This disease causes lesions and blisters on Oak leaves.

  5. Erysiphe alphitoides - Wikipedia

    en.wikipedia.org/wiki/Erysiphe_alphitoides

    In mature trees the disease is generally less damaging, but in combination with other factors such as defoliation by insects can contribute to tree decline. A study of the effects of E. alphitoides on Quercus robur found it decreased stomatal conductance by 15–30%, did not affect the leaf mass to area ratio, decreased the nitrogen content of ...

  6. Aleurodiscus oakesii - Wikipedia

    en.wikipedia.org/wiki/Aleurodiscus_oakesii

    Aleurodiscus oakesii is a cluster of small, gray-white, irregular cup-shaped saprotrophic fungi that grows on decaying hardwood tree bark. This fungus may also be called hophornbeam discs, [1] and it causes smooth patch disease. A. oakesii is found year round in North America, Europe, and Asia and is commonly found on oak trees.

  7. Foamy bark canker - Wikipedia

    en.wikipedia.org/wiki/Foamy_Bark_Canker

    The foamy bark canker is a disease affecting oak trees in California caused by the fungus Geosmithia sp. #41 and spread by the Western oak bark beetle (Pseudopityophthorus pubipennis). This disease is only seen through the symbiosis of the bark beetles and the fungal pathogen .

  8. Botryosphaeria corticola - Wikipedia

    en.wikipedia.org/wiki/Botryosphaeria_corticola

    Bot canker of oak is a disease on stems, branches and twigs of oak trees in Europe and North America. The casual agent of Bot canker of oak is the fungus Botryosphaeria corticola. Bot canker of oak causes lesions and cankers on a wide range of oaks in Europe and most recently live oaks in North America.

  9. Cronartium quercuum - Wikipedia

    en.wikipedia.org/wiki/Cronartium_quercuum

    Cronartium quercuum, also known as pine-oak gall rust is a fungal disease of pine (Pinus spp.) and oak (Quercus spp.) trees. Similar to pine-pine gall rust, this disease is found on pine trees but its second host is an oak tree rather than another pine.