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Fruit tree diseases (9 C, 27 P) Fungal tree pathogens and diseases (5 C, 286 P) Pages in category "Tree diseases"
It is a plant pathogen that causes tree disease commonly known as "red ring rot" or "white speck". This disease, extremely common in the conifers of North America, decays tree trunks, rendering them useless for lumber. [2] It is a rot of the heartwood. Signs of the fungus include shelf-shaped conks protruding from the trunks of trees.
Plant disease triangle. Epidemiology is the study of factors affecting the outbreak and spread of infectious diseases. [10] A disease triangle describes the basic factors required for plant diseases. These are the host plant, the pathogen, and the environment. Any one of these can be modified to control a disease. [11]
The disease is spread by airborne fungal spores and was first discovered in Northwest Christmas tree farms in 1983. [ 7 ] The plant pathogen , Phytophthora ramorum , which causes "sudden oak death" (SOD), is a fungus-like protist which was identified in the early 1990s. [ 8 ]
Trees have natural chemicals that keep most fungi at bay, but climate change could be making trees more vulnerable, researcher says.
Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]
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