Cercospora Fuchsiae
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Cercospora Fuchsiae
''Cercospora fuchsiae'' is a fungal plant pathogen In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ .... Description * Leaf spots circular to angular, 2–8 mm. in diameter, pale to medium dark brown, the older spots with a pale center or with concentric rings and a dark line margin * fruiting chiefly epiphyllous * stromata a few cells to 30 µm in diameter, dark brown; fascicles 3-20 diverging stalks; conidiophores pale to medium dark brown, paler and sometimes more narrow toward the tip, plainly multiseptate, slightly branched, 0-2 geniculate or undulate, straight to curved, medium spore scar at the subtruncate tip, 4–5.5 x 30-130 µm * conidia hyaline, acicular to obclavate, straight to mildly curved, indistinctly multiseptate, base truncate to long obconically tr ...
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Fungus
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true f ...
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Pathogen
In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term ''pathogen'' came into use in the 1880s. Typically, the term ''pathogen'' is used to describe an ''infectious'' microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. The scientific study of microscopic organisms, including microscopic pathogenic organisms, is called microbiology, while parasitology refers to the scientific study of parasites and the organisms that host them. There are several pathways through which pathogens can invade a host. The principal pathways have different episodic time frames, but soil has the longest ...
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Cercospora
''Cercospora'' is a genus of ascomycete fungi. Most species have no known sexual stage, and when the sexual stage is identified, it is in the genus ''Mycosphaerella''. Most species of this genus cause plant diseases, and form leaf spots. It is a relatively well-studied genus of fungi, but there are countless species not yet described, and there is still much to learn about the best-known of the species. Selected species *''Cercospora acetosella'' - found on sheep sorrel and other docks *'' Cercospora aciculina'' *'' Cercospora agerati'' *''Cercospora alabemensis'' *'' Cercospora alismatis'' *'' Cercospora althaeina'' *''Cercospora angreci'' - causes leaf spot of orchids *'' Cercospora angulata'' *'' Cercospora apii'' - causes leaf spot on celery, and found on other plants, including '' Impatiens'' * ''Cercospora apii'' f.sp. ''clerodendri'' *'' Cercospora apiicola'' - causes leaf spot on celery *'' Cercospora arachidicola'' - causes peanut leaf spot *'' Cercospora arctii'' *' ...
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