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Rapid ʻŌhiʻa Death (ROD) is a fungal disease that is rapidly killing forests of ʻōhiʻa (Metrosideros polymorpha)—an ecologically important native tree species within the Hawaiian Islands that has provided a plethora of habitats for endangered birds and other species. [1] Initially reported by landowners in Puna in 2010, ROD spread ...
Laminated root rot. Laminated root rot also known as yellow ring rot is caused by the fungal pathogen Phellinus weirii. Laminated root rot is one of the most damaging root disease amongst conifers in northwestern America and true firs, Douglas fir, Mountain hemlock, and Western hemlock are highly susceptible to infection with P. weirii.
Binomial name. Endocronartium harknessii. (J.P.Moore) Hirats. (1969) Pine-pine gall rust, also known as western gall rust, is a fungal disease of pine trees. It is caused by Endocronartium harknessii (asexual name is Peridermium harknessii), an autoecious, endocyclic, rust fungus that grows in the vascular cambium of the host. [1] The disease ...
Citrus greening was first found in 2005 in the US and has cut the Orange tree production in half [2][3] Citrus greening disease or yellow dragon disease[4] (calque of Chinese: 黃龍病; pinyin: huánglóngbìng abbr. HLB) [5] is a disease of citrus caused by a vector -transmitted pathogen. The causative agents are motile bacteria, Liberibacter ...
Slafractonia leguminicola (formerly Rhizoctonia leguminicola) is a fungus that is a plant pathogen that most often attaches itself to the Trifolium pratense or red clover. It is also called black patch disease. The infection is first seen as small black patches on the leaves of red clover (often on the bottom of the leaves first) and spreads to ...
Plant disease. 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]
Corynespora cassiicola ring-spots symptoms on the leaves of tomato plants. Photograph by Dr. Ken Pernezny from University of Florida. Corynespora cassiicola is a species of fungus well known as a plant pathogen. It is a sac fungus in the family Corynesporascaceae. It is the type species of the genus Corynespora.
United States. Diplodia tip blight, also known as Sphaeropsis blight, is a widespread disease affecting conifers caused by an opportunistic fungal pathogen, Diplodia sapinea. It is found in “both hemispheres between the latitudes 30° and 50° north and south". [1] The diseases symptoms include: damping off and collar rot of seedlings, stem ...