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QoI
Qo inhibitors (QoI), or quinone outside inhibitors, are a group of fungicides used in agriculture. Some of these fungicides are among the most popular in the world. QoI are chemical compounds which act at the quinol ''outer'' binding site of the cytochrome bc1 complex, cytochrome ''bc''1 complex. Most QI common names end in -strobin and so are often called strobs. QoI's are the resulting fusion of three fungicides families, the well-known family of strobilurins and two new families, represented by fenamidone and famoxadone. Some strobilurins are azoxystrobin, kresoxim-methyl, picoxystrobin, pyraclostrobin, and trifloxystrobin. Usage QoI fungicides are used on a wide range of crops, such as cereals, vines, pome fruits, cucurbits, tomatoes and potatoes. For example, they are used as fungicides for cereals, against ''Erysiphe graminis'' f.sp ''tritici'' responsible for the powdery wheat mildew, mildew in wheat or against ''Septoria tritici'', responsible for septoria, septoria lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azoxystrobin
Azoxystrobin is the ISO common name for an organic compound that is used as a fungicide. It is a broad spectrum systemic active ingredient widely used in agriculture to protect crops from fungal diseases. It was first marketed in 1996 using the brand name Amistar and by 1999 it had been registered in 48 countries on more than 50 crops. In the year 2000 it was announced that it had been granted UK Millennium product status. History In 1977, academic research groups in Germany published details of two new antifungal antibiotics they had isolated from the basidiomycete fungus ''Strobilurus tenacellus''. They named these strobilurin A and B but did not provide detailed structures, only data based on their high-resolution mass spectra, which showed that the simpler of the two had molecular formula C16H18O3. In the following year, further details including structures were published and a related fungicide, oudemansin A from the fungus '' Oudemansiella mucida'', whose identity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Septoria Tritici
''Zymoseptoria tritici'', synonyms ''Septoria tritici'', ''Mycosphaerella graminicola'', is a species of filamentous fungus, an ascomycete in the family ''Mycosphaerellaceae''. It is a wheat plant pathogen causing septoria leaf blotch that is difficult to control due to resistance to multiple fungicides. The pathogen today causes one of the most important diseases of wheat. In 2011, Quaedvlieg et al. introduced a new combination for this species: ''Zymoseptoria tritici'' (Desm.) Quaedvlieg & Crous, 2011, as they found that the type strains of both the genus ''Mycosphaerella'' (linked to the anamorph genus ''Ramularia'') and the genus ''Septoria'' (linked to the genus ''Septoria'', an extensive clade of very distinct septoria-like species within the ''Mycosphaerellaceae'') clustered separately from the clade containing both ''Zymoseptoria tritici'' and ''Z. passerinii''. Since 2011, a total of eight ''Zymoseptoria'' species have been described within the genus ''Zymoseptoria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungicide
Fungicides are biocidal chemical compounds or biological organisms used to kill parasitic fungi or their spores. A fungistatic inhibits their growth. Fungi can cause serious damage in agriculture, resulting in critical losses of yield, quality, and profit. Fungicides are used both in agriculture and to fight fungal infections in animals. Chemicals used to control oomycetes, which are not fungi, are also referred to as fungicides, as oomycetes use the same mechanisms as fungi to infect plants. Fungicides can either be contact, translaminar or systemic. Contact fungicides are not taken up into the plant tissue and protect only the plant where the spray is deposited. Translaminar fungicides redistribute the fungicide from the upper, sprayed leaf surface to the lower, unsprayed surface. Systemic fungicides are taken up and redistributed through the xylem vessels. Few fungicides move to all parts of a plant. Some are locally systemic, and some move upwardly. Most fungicides that ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyraclostrobin
Pyraclostrobin is a quinone outside inhibitor ( QI)-type fungicide used in agriculture. Among the QIs, it lies within the strobilurin chemical class. Use Pyraclostrobin is used to protect ''Fragaria'', ''Rubus idaeus'', ''Vaccinium corymbosum'', ''Ribes rubrum'', ''Ribes uva-crispa'', blackberry (various ''Rubus'' spp.), and '' Pistachio vera''. Target pathogens Pyraclostrobin is used against ''Botrytis cinerea'' and ''Alternaria alternata''. Resistance Resistant populations have been identified in: *''Botrytis cinerea'' on ''Fragaria'' in the Carolinas, conferred by the G143A mutation in the partial cytochrome b (CYTB) gene. *''Botrytis cinerea'' on ''Fragaria'', ''Rubus idaeus'', ''Vaccinium corymbosum'', ''Ribes rubrum'', ''Ribes uva-crispa'', and blackberry (various ''Rubus'' spp.) in Northern Germany. *''Botrytis cinerea'' on ''Fragaria'' in Florida. *''Alternaria alternata'' on '' Pistachio vera'' in California. Geography of use United States Pyraclostrobin was widely use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungicide Resistance Action Committee
Fungicides are biocidal chemical compounds or biological organisms used to kill parasitic fungi or their spores. A fungistatic inhibits their growth. Fungi can cause serious damage in agriculture, resulting in critical losses of yield, quality, and profit. Fungicides are used both in agriculture and to fight fungal infections in animals. Chemicals used to control oomycetes, which are not fungi, are also referred to as fungicides, as oomycetes use the same mechanisms as fungi to infect plants. Fungicides can either be contact, translaminar or systemic. Contact fungicides are not taken up into the plant tissue and protect only the plant where the spray is deposited. Translaminar fungicides redistribute the fungicide from the upper, sprayed leaf surface to the lower, unsprayed surface. Systemic fungicides are taken up and redistributed through the xylem vessels. Few fungicides move to all parts of a plant. Some are locally systemic, and some move upwardly. Most fungicides that can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Famoxadone
Famoxadone is a fungicide to protect agricultural products against various fungal diseases on fruiting vegetables, tomatoes, potatoes, curcurbits, lettuce and grapes.Famoxadone Pesticide Fact Sheet It is used in combination with cymoxanil. Famoxadone is a QI, albeit with a chemistry different from most QIs. (It is an [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fenamidone
Fenamidone is a foliar fungicide used on grapes, ornamentals, potatoes, 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 ..., and vegetables such as tomatoes. It exerts its fungicidal effects by acting as a Qo inhibitor. References {{organic-compound-stub Fungicides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Famoxadone
Famoxadone is a fungicide to protect agricultural products against various fungal diseases on fruiting vegetables, tomatoes, potatoes, curcurbits, lettuce and grapes.Famoxadone Pesticide Fact Sheet It is used in combination with cymoxanil. Famoxadone is a QI, albeit with a chemistry different from most QIs. (It is an [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheat Mildew
Wheat mildew is a wheat disease that affects the ear, and is brought on by causes somewhat similar to those that cause blight, though at a more advanced period of the season. If this disorder comes on immediately after the first appearance of the ear, the straw is also affected—but if the grain is nearly or fully formed, injury to the straw is less discernible. Wheat may mildew where the straw is perfectly fresh, but only rarely. A severe mildew, however, retards further grain and straw maturation and leads to death. Something akin to mildew is the ''gum'', which, in all warm moist seasons, attaches itself to the ear, and often causes considerable damage. All these different disorders are generally accompanied by insects, and by minute parasitic vegetable growths, considered by many to be the cause of the damage. Their appearance, however, may justly be attributed to the diseased state of the plant; for wherever putrefaction takes place, either in animal or vegetable substan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strobilurin
Strobilurins are a group of natural products and their synthetic analogs. A number of strobilurins are used in agriculture as fungicides. They are part of the larger group of QIs (Quinone outside Inhibitors), which act to inhibit the respiratory chain at the level of Complex III. The first parent natural products, strobilurins A and B, were extracted from the fungus '' Strobilurus tenacellus''. Commercial strobilurin fungicides were developed through optimization of photostability and activity. Strobilurins represented a major development in fungus-based fungicides. First released in 1996, there are now ten major strobilurin fungicides on the market, which account for 23-25 % of the global fungicide sales. Examples of commercialized strobilurin derivatives are azoxystrobin, kresoxim-methyl, picoxystrobin, fluoxastrobin, oryzastrobin, dimoxystrobin, pyraclostrobin and trifloxystrobin. Strobilurins are mostly contact fungicides with a long half time as they are absorbed into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmopara Viticola
''Plasmopara viticola'', the causal agent of grapevine downy mildew, is a heterothallic oomycete that overwinters as oospores in leaf litter and soil. In the spring, oospores germinate to produce macrosporangia, which under wet condition release zoospores. Zoospores are splashed by rain into the canopy, where they swim to and infect through stomata. After 7–10 days, yellow lesions appear on foliage. During favorable weather, the lesions sporulate and new secondary infections occur. Description ''Plasmopara viticola'', also known as grape downy mildew, is considered to be the most devastating disease of grapevines in climates with relatively warm and humid summers. It was first observed in 1834 by Schweinitz on ''Vitis aestivalis'' in the southeastern United States. Shortly after this first observation, the pathogen was introduced to European countries where it played a devastating role in the yield and production of their grapes, and consequently their wine. France was among ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
