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Tilletia Indica
Karnal bunt (also known as partial bunt) is a fungal disease of wheat, durum wheat, and triticale. The smut fungus ''Tilletia indica'', a basidiomycete, invades the kernels and obtains nutrients from the endosperm, leaving behind waste products with a disagreeable odor that makes bunted kernels too unpalatable for use in flour or pasta. While Karnal bunt generally does not lead to devastating crop losses, it has the potential to dramatically decrease yield and poses additional economic concerns through quarantines which limit the export of suspected infectious wheat products from certain areas, including the U.S. Several chemical control methods exist for Karnal bunt of wheat, but much work remains to be done in identifying resistant host varieties. Morphology Teliospore Teliospore ultrastructure was characterized by electron microscopy by Roberson & Luttrell in 1987. Hosts and symptoms Karnal bunt attacks durum wheat, rye, and triticale, a hybrid of wheat and rye. Despite its pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
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'' (''t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycologia
''Mycologia'' is a peer-reviewed scientific journal that publishes papers on all aspects of the fungi, including lichens. It first appeared as a bimonthly journal in January 1909, published by the New York Botanical Garden under the editorship of William Murrill. It became the official journal of the Mycological Society of America The Mycological Society of America (MSA) is a learned society that serves as the professional organization of mycologists in the U.S. and Canada. It was founded in 1932. The Society's constitution states that "The purpose of the Society is to prom ..., which still publishes it today. It was formed as a merger of the ''Journal of Mycology'' (14 volumes; 1885–1908) and the ''Mycological Bulletin'' (7 volumes; 1903–1908). The ''Mycological Bulletin'' was known as the ''Ohio Mycological Bulletin'' in its first volume. Editors The following persons have been editor-in-chief of the journal: The following persons have been managing editor of the journal: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triticale Diseases
Triticale (; × ''Triticosecale'') is a hybrid of wheat (''Triticum'') and rye (''Secale'') first bred in laboratories during the late 19th century in Scotland and Germany. Commercially available triticale is almost always a second-generation hybrid, i.e., a cross between two kinds of primary (first-cross) triticales. As a rule, triticale combines the yield potential and grain quality of wheat with the disease and environmental tolerance (including soil conditions) of rye. Only recently has it been developed into a commercially viable crop. Depending on the cultivar, triticale can more or less resemble either of its parents. It is grown mostly for forage or fodder, although some triticale-based foods can be purchased at health food stores and can be found in some breakfast cereals. When crossing wheat and rye, wheat is used as the female parent and rye as the male parent (pollen donor). The resulting hybrid is sterile and must be treated with colchicine to induce polyploidy and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheat Diseases
The cereal grain wheat is subject to numerous wheat diseases, including bacterial, viral and fungal diseases, as well as parasitic infestations. Principal diseases * Barley yellow dwarf virus, BYDV * Brown rust ''Puccinia recondita'' * Common bunt (aka Covered smut) ''Tilletia caries'' * Ergot ''Claviceps purpurea'' * Eyespot '' Pseudocercosporella herpotrichoides'' * Glume blotch '' Septoria nodorum'' * septoria leaf blotch ''Mycosphaerella graminicola'', synonyms: ''Septoria tritici'', ''Zymoseptoria tritici'' * Mildew ''Erysiphe graminis'' * Seedling blight ''Fusarium'' spp., ''Septoria nodorum'' * Sharp eyespot ''Rhizoctonia cerealis'' * Spot blotch '' Biplolaris sorokiana'' * Take-all ''Gaeumannomyces graminis'' * Tan spot ''Pyrenophora tritici-repentis'' * Yellow rust ''Puccinia striiformis'' In Europe Cereals are at risk from numerous diseases due to the level of intensification necessary for profitable production since the 1970s. More recently varietal diversificat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ustilaginomycotina
The Ustilaginomycotina is a subdivision within the division Basidiomycota of the kingdom Fungi. It consists of the classes Ustilaginomycetes and Exobasidiomycetes, and in 2014 the subdivision was reclassified and the two additional classes Malasseziomycetes and Moniliellomycetes added. The name was first published by Doweld in 2001; Bauer and colleagues later published it in 2006 as an isonym. Ustilagomycotina and Agaricomycotina are considered to be sister groups, and they are in turn sister groups to the subdivision Pucciniomycotina. Ustilaginomycotina comprises 115 genera with more than 1700 species. The subdivision is mostly plant parasites on vascular plants, and the distribution of the subdivision is therefore restricted to the distribution of the host. The group is also called the true smut fungi because of the production of teliospores. The name smut is still used as a term since it circumscribes the organization and life cycle of Ustilaginomycotina, but it is not a tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States National Agricultural Library
The United States National Agricultural Library (NAL) is one of the world's largest agricultural research libraries, and serves as a national library of the United States and as the library of the United States Department of Agriculture. Located in Beltsville, Maryland, it is one of five national libraries of the United States (along with the Library of Congress, the National Library of Medicine, the National Transportation Library, and the National Library of Education). It is also the coordinator for the Agriculture Network Information Center (AgNIC), a national network of state land-grant institutions and coordinator for the U.S. Department of Agriculture (USDA) field libraries. NAL was established on May 15, 1862, by the signing of the Organic Act by Abraham Lincoln. It served as a departmental library until 1962, when the Secretary of Agriculture officially designated it as the National Agricultural Library. The first librarian, appointed in 1867, was Aaron B. Grosh, one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zero Tolerance (food Policy)
In food safety policy, a zero tolerance standard generally means that if a potentially dangerous substance (whether microbiological, chemical, or other) is present in or on a product, that product will be considered adulterated and unfit for human consumption. Fecal contamination In the United States meat and poultry inspection program, "zero tolerance" usually refers to the USDA rule that permits no visible signs of fecal contamination (feces) on meat and poultry carcasses. USDA requires that any time such fecal contamination is detected, it must be removed from the carcass. At issue is how this rule has been applied and enforced by USDA in meat and poultry plants. For a number of years, poultry producers have been permitted to either rinse off or cut away such contamination, but beef producers have only been permitted to trim it with a knife—which they argue costs them money in lost product weight and imposes a requirement that poultry producers do not have to meet. The policy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal And Plant Health Inspection Service
The Animal and Plant Health Inspection Service (APHIS) is an agency of the United States Department of Agriculture (USDA) based in Riverdale, Maryland responsible for protecting animal health, animal welfare, and plant health. APHIS is the lead agency for collaboration with other agencies to protect U.S. agriculture from invasive pests and diseases. APHIS's PPQ is the National Plant Protection Organization for the U.S., and the agency's head of veterinary services/veterinary Deputy Administrator is the Chief Veterinary Officer of the United States. History APHIS was created in 1972 by Secretary's Memorandum No. 1769. The origins of the agency predate creation of USDA, to 1854 when the Office of Entomologist, Agricultural Section, U.S. Patent Office was created. It was the first of three agencies that eventually were merged to form APHIS. In 1881, a Cattle Commission was created in the Department of the Treasury that three years later was transferred to USDA. Plant quarantine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triticum Aestivum
Common wheat (''Triticum aestivum''), also known as bread wheat, is a cultivated wheat species. About 95% of wheat produced worldwide is common wheat; it is the most widely grown of all crops and the cereal with the highest monetary yield. Taxonomy Numerous forms of wheat have evolved under human selection. This diversity has led to confusion in the naming of wheats, with names based on both genetic and morphological characteristics. List of common cultivars * Albimonte * Manital Phylogeny Bread wheat is an allohexaploid (an allopolyploid with six sets of chromosomes: two sets from each of three different species). Of the six sets of chromosomes, two come from ''Triticum urartu'' (einkorn wheat) and two from a species related to ''Aegilops speltoides''. This spontaneous hybridisation created the tetraploid species ''Triticum turgidum'' (an ancestor of wild emmer wheat and durum wheat) 580,000–820,000 years ago. The last two sets of chromosomes came from wild goat-gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biofumigation
Biofumigation is a method of pest control in agriculture, a variant of fumigation where the gaseous active substance—fumigant—is produced by decomposition of plant material freshly chopped and buried in the soil for this purpose. Plants from the Brassicaceae family (e.g., mustards, cauliflower, and broccoli) are primarily used due to their high glucosinolate content; in the process of decomposition, glucosinolates are broken down to volatile isothiocyanates which are toxic to soil organisms such as bacteria, fungi and nematodes, but less toxic and persistent in the environment than synthetic fumigants. Alternatively, grasses such as sorghum can be used, in which case hydrogen cyanide is produced to similar effect. The method consists of mowing and chopping the plants during flowering to ensure maximum glucosinolate content and speed up decomposition. The ground needs to be irrigated to field capacity, after which the chopped material is incorporated into the top layer and cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muscodor Albus
''Muscodor albus'' (frequently spelled "muscador albus") is a plant-dwelling fungus in the family Xylariaceae. It was first discovered in the bark of a cinnamon tree in Honduras. It has the ability to produce a mixture of volatile compounds, including Alcohol (chemistry), alcohols and esters, which can kill pathogens like Mold (fungus), molds and bacteria such as listeria and salmonella and many plant pathogens. It also acts as an insecticide, killing potato tuber moths, codling moths and their larvae. Researchers at the Agricultural Research Service investigated the antimicrobial effects of ''Muscodor albus'' on ''Botrytis cinerea'', which causes the common grey mold found on table grapes. Researchers found that ''Muscodor albus'' reduces the occurrence of ''Botrytis cinerea'' up to 85% on table grapes. Utilizing ''Muscodor albus antimicrobial effects is ideal for organic farmers who suffer a loss in yield due to the grey mold, which is usually treated with sulfur dioxide. Othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spores
In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa. Bacterial spores are not part of a sexual cycle, but are resistant structures used for survival under unfavourable conditions. Myxozoan spores release amoeboid infectious germs ("amoebulae") into their hosts for parasitic infection, but also reproduce within the hosts through the pairing of two nuclei within the plasmodium, which develops from the amoebula. In plants, spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Two gametes fuse to form a zygote which develops into a new spor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
