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List Of Tobacco Diseases
This is a list of diseases of tobacco (''Nicotiana tabacum''). Bacterial diseases Fungal diseases Nematodes, parasitic Viral and phytoplasma diseases Miscellaneous diseases and disorders {, class="wikitable" style="clear" ! colspan=2, Miscellaneous diseases and disorders , - , Brown root rot , , ''Pratylenchus'' spp. (nematodes) , - , Drought spot , , Drought , - , False broomrape , , Unknown , - , Frenching , , Metabolite of ''Bacillus cereus'' , - , Stem break (in Europe) , , ''Ditylenchus dipsaci'' (nematodes) , - , Sunscald , , High light intensity and high temperatures , - , Weather fleck , , Ozone , - References Common Names of Diseases, The American Phytopathological Society Tobacco Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tobacco
Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the chief commercial crop is ''N. tabacum''. The more potent variant ''N. rustica'' is also used in some countries. Dried tobacco leaves are mainly used for smoking in cigarettes and cigars, as well as pipes and shishas. They can also be consumed as snuff, chewing tobacco, dipping tobacco, and snus. Tobacco contains the highly addictive stimulant alkaloid nicotine as well as harmala alkaloids. Tobacco use is a cause or risk factor for many deadly diseases, especially those affecting the heart, liver, and lungs, as well as many cancers. In 2008, the World Health Organization named tobacco use as the world's single greatest preventable cause of death. Etymology The English word ''tobacco'' originates from the Spanish word "tabaco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pythium Ultimum
''Pythium ultimum'' is a plant pathogen. It causes the damping off and root rot diseases of hundreds of diverse plant hosts including corn, soybean, potato, wheat, fir, and many ornamental species. ''P. ultimum'' belongs to the peronosporalean lineage of oomycetes, along with other important plant pathogens such as ''Phytophthora'' spp. and many genera of downy mildews. ''P. ultimum'' is a frequent inhabitant of fields, freshwater ponds, and decomposing vegetation in most areas of the world. Contributing to the widespread distribution and persistence of ''P. ultimum'' is its ability to grow saprotrophically in soil and plant residue. This trait is also exhibited by most ''Pythium'' spp. but not by the related ''Phytophthora'' spp., which can only colonize living plant hosts. Pathology and disease management Infections of seeds and roots are initiated by both the mycelia and spores of ''P. ultimum''. Two spore types are made, depending on the strain. ''P. ultimum'' is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thanatephorus Cucumeris
''Rhizoctonia'' is a genus of fungi in the order Cantharellales. Species form thin, effused, corticioid basidiocarps (fruit bodies), but are most frequently found in their sterile, anamorphic state. ''Rhizoctonia'' species are saprotrophic, but some are also facultative plant pathogens, causing commercially important crop diseases. Some are also endomycorrhizal associates of orchids. The genus name was formerly used to accommodate many superficially similar, but unrelated fungi. Taxonomy History Anamorphs ''Rhizoctonia'' was introduced in 1815 by French mycologist Augustin Pyramus de Candolle for anamorphic plant pathogenic fungi that produce both hyphae and sclerotia. The name is derived from Ancient Greek, ῥίζα (''rhiza'', "root") + κτόνος (''ktonos'', "murder"), and de Candolle's original species, ''Rhizoctonia crocorum'' (teleomorph ''Helicobasidium purpureum''), is the causal agent of violet root rot of carrots and other root vegetables. Subsequent authors adde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizoctonia Solani
''Rhizoctonia solani'' is a species of fungus in the order Cantharellales. Basidiocarps (fruit bodies) are thin, effused, and web-like, but the fungus is more typically encountered in its anamorphic state, as hyphae and sclerotia. The name ''Rhizoctonia solani'' is currently applied to a complex of related species that await further research. In its wide sense, ''Rhizoctonia solani'' is a facultative plant pathogen with a wide host range and worldwide distribution. It causes various plant diseases such as root rot, damping off, and wire stem. It can also form mycorrhizal associations with orchids. Taxonomy In 1858, the German plant pathologist Julius Kühn observed and described a fungus on diseased potato tubers and named it ''Rhizoctonia solani'', the species epithet referring to ''Solanum tuberosum'' (potato). The disease caused was well known before the discovery and description of the fungus. In 1956, Dutch mycologist M.A. Donk published the new name ''Thanatephorus cucumer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fusarium Affine
Fusarium affine is a fungal plant pathogen affecting tobacco. See also * List of tobacco diseases References External links affine Affine may describe any of various topics concerned with connections or affinities. It may refer to: * Affine, a relative by marriage in law and anthropology * Affine cipher, a special case of the more general substitution cipher * Affine comb ... Fungal plant pathogens and diseases Tobacco diseases {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hymenula Affinis
Hymenula affinis is an ascomycete 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 t ... that is a plant pathogen. References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Ascomycota enigmatic taxa {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascochyta Phaseolorum
''Phoma exigua'' var. ''exigua'' is a fungal plant pathogen infecting several hosts. See also * List of potato diseases * List of tobacco diseases This is a list of diseases of tobacco (''Nicotiana tabacum''). Bacterial diseases Fungal diseases Nematodes, parasitic Viral and phytoplasma diseases Miscellaneous diseases and disorders {, class="wikitable" style="clear ... * List of cucurbit diseases * List of hydrangea diseases References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Vegetable diseases Potato diseases Tobacco diseases Ornamental plant pathogens and diseases Phoma Fungi described in 1852 {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoma Exigua Var
''Phoma'' is a genus of common coelomycetous soil fungi. It contains many plant pathogenic species. Description Spores are colorless and unicellular. The pycnidia are black and depressed in the tissues of the host. ''Phoma'' is arbitrarily limited to those species in which the spores are less than 15 µm as the larger spored forms have been placed in the genus ''Macrophoma''. The most important species include ''Phoma beta'' which is the cause of the heart rot and blight of beets, ''Phoma batata'' that produces a dry rot of sweet potato, and ''Phoma solani''. Taxonomy About 140 ''Phoma'' taxa have been defined and recognized which may be divided into two large groups: (i) plurivorous fungi, generally saprobic or weakly parasitic, mainly from temperate regions in Eurasia, but occasionally also found in other parts of the world (including areas with cool or warm climates); and (ii) specific pathogens of cultivated plants. However other estimates place the number of taxa c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysiphe Cichoracearum
''Erysiphe cichoracearum'' is a fungal plant pathogen that causes powdery mildew disease of cucurbits, including melon, cucumber, pumpkin, and squash. The primary symptoms are white, powder-like spots on the leaves and stems. ''Sphaerotheca fuliginea'' causes a similar looking powdery mildew Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales. Powdery mildew is one of the easier plant diseases to identify, as ... of cucurbits. External links Powdery Mildew of Cucurbits Fungal plant pathogens and diseases Fruit and vegetable pathogens and diseases cicnoracearum Fungi described in 1805 {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllosticta Nicotiana
{{dothideomycetes-stub ...
''Phyllosticta nicotianae'' is a plant pathogen infecting tobacco. References External links USDA ARS Fungal Database Fungal plant pathogens and diseases Tobacco diseases nicotiana ''Nicotiana'' () is a genus of herbaceous plants and shrubs in the Family (biology), family Solanaceae, that is Native plant, indigenous to the Americas, Australia, Southwestern Africa and the South Pacific. Various ''Nicotiana'' species, common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olpidium Brassicae
''Olpidium brassicae'' is a plant pathogen, it is a fungal obligate parasite. In 1983, the Alsike, Alberta area's clover (which is a major part of horses' diet) was struck by a fungus epidemic of ''Olpidium brassicae'', previously not seen in Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ....J. P. Tewari and P. Bains, ''Fungi associated with the roots of clover in Alberta. I. Olpidium brassicae and Ligniera sp.'' Canadian Plant Disease Survey 63:2, 1983 35, found aCPS-SCP of Canada website Accessed January 11, 2010. Vector ''O. brassicae'' is the fungal vector for most, if not all, necroviruses. References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Plant pathogens and diseases by vector Chytridiomycota Fungi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycosphaerella Nicotianae
''Mycosphaerella'' is a genus of ascomycota. With more than 10,000 species, it is the largest genus of 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 immersed or supe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
