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Mycosphaerella Asteroma
''Mycosphaerella'' is a genus of ascomycota. With more than 10,000 species, it is the largest genus of phytopathology, plant pathogen fungi. The following introduction about the fungal genus ''Mycosphaerella'' is copied (with permission) from the dissertation of W. Quaedvlieg (named: Re-evaluating ''Mycosphaerella'' and allied genera). Species belonging to the fungal genus ''Mycosphaerella'' (1884) (''Capnodiales'', ''Dothideomycetes'') have evolved as endophytes, saprotrophs and symbionts, but mostly ''Mycosphaerella'' species are foliicolous plant pathogens which are the cause of significant economical losses in both temperate and tropical crops worldwide. The generic concept of Mycosphaerella is based on the type species of the genus, ''M. punctiformis'', which was introduced \130 years ago in order to describe small loculoascomycetes with few distinct morphological traits. Species belonging to ''Mycosphaerella'' were characterised as having pseudothecial ascomata that can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycosphaerella Fragariae
Common spot of strawberry is one of the most common and widespread diseases afflicting the strawberry. Common spot of strawberry is caused by the fungus ''Mycosphaerella fragariae'' (imperfect stage is ''Ramularia tulasnei''). Symptoms of this disease first appear as circular, dark purple spots on the leaf surface. ''Mycosphaerella fragariae'' is very host-specific and only infects strawberry. Hosts and symptoms This disease affects strawberry plant foliage causing purple spots ⅛ to ¼ inches across on the upper side of the leaves. At first, the whole spot is purple but as the disease matures the center of the leaf spots on older leaves become tan or gray, then almost white. Lesions on younger leaves remain light brown. When numerous spots merge foliage death can occur; this can stunt or kill infected plants when severe. On petioles, stolons, calyxes, and fruit trusses, elongated lesions may form and interfere with water transport in the plant, weakening the plant and makin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |