|
Erysiphe Polygoni
''Erysiphe betae'' is a plant pathogen. It is a form of 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, a ... that can affect crops of sugar beet, when it can cause up to a 30% yield loss.Heffer, V., M. L. Powelson, K. B. Johnson, and N. Shishkoff. "Identification of Powdery Mildew Fungi anno 2006." Identification of Powdery Mildew Fungi. APS, 2006. Web. 14 Nov. 2016. The fungus occurs worldwide in all regions where sugar beet is grown and it also infects other edible crops, e.g. beetroot. Identification This pathogen is a strict obligated parasite, and therefore can only be identified when ''in planta''. Often to properly identify this pathogen, some form of microscopic analysis is needed when it is only found on one type of plant. This can be done through isolation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Pathology
Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants. Not included are ectoparasites like insects, mites, vertebrate, or other pests that affect plant health by eating plant tissues. Plant pathology also involves the study of pathogen identification, disease etiology, disease cycles, economic impact, plant disease epidemiology, plant disease resistance, how plant diseases affect humans and animals, pathosystem genetics, and management of plant diseases. Overview Control of plant diseases is crucial to the reliable production of food, and it provides significant problems in agricultural use of land, water, fuel and other inputs. Plants in both natural and cultivated popu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 its symptoms are quite distinctive. Infected plants display white powdery spots on the leaves and stems. The lower leaves are the most affected, but the mildew can appear on any above-ground part of the plant. As the disease progresses, the spots get larger and denser as large numbers of asexual spores are formed, and the mildew may spread up and down the length of the plant. Powdery mildew grows well in environments with high humidity and moderate temperatures. Greenhouses provide an ideal moist, temperate environment for the spread of the disease. This causes harm to agricultural and horticultural practices where powdery mildew may thrive in a greenhouse setting. In an agricultural or horticultural setting, the pathogen can be control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Beet
A sugar beet is a plant whose root contains a high concentration of sucrose and which is grown commercially for sugar production. In plant breeding, it is known as the Altissima cultivar group of the common beet ('' Beta vulgaris''). Together with other beet cultivars, such as beetroot and chard, it belongs to the subspecies ''Beta vulgaris'' subsp. ''vulgaris.'' Its closest wild relative is the sea beet (''Beta vulgaris'' subsp. ''maritima''). Sugar beets are grown in climates that are too cold for sugar cane. The low sugar content of the beets makes growing them a marginal proposition unless prices are relatively high. In 2020, Russia, the United States, Germany, France and Turkey were the world's five largest sugar beet producers. In 2010–2011, Europe, and North America except Arctic territories failed to supply the overall domestic demand for sugar and were all net importers of sugar. The US harvested of sugar beets in 2008. In 2009, sugar beets accounted for 20% of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beetroot
The beetroot is the taproot portion of a beet plant, usually known in North America as beets while the vegetable is referred to as beetroot in British English, and also known as the table beet, garden beet, red beet, dinner beet or golden beet. It is one of several cultivated varieties of ''Beta vulgaris'' grown for their edible taproots and leaves (called beet greens); they have been classified as ''B. vulgaris'' subsp. ''vulgaris'' Conditiva Group. Other cultivars of the same species include the sugar beet, the leaf vegetable known as chard or spinach beet, and mangelwurzel, which is a fodder crop. Three subspecies are typically recognized. Etymology ''Beta'' is the ancient Latin name for beetroot,Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). pp 70 possibly of Celtic origin, becoming ''bete'' in Old English. ''Root'' derives from the late Old English ''rōt'', itself from Old Norse ''rót''. History The domesti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungal Plant Pathogens And Diseases
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food Plant Pathogens And Diseases
Food is any substance consumed by an organism for nutritional support. Food is usually of plant, animal, or fungal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy, maintain life, or stimulate growth. Different species of animals have different feeding behaviours that satisfy the needs of their unique metabolisms, often evolved to fill a specific ecological niche within specific geographical contexts. Omnivorous humans are highly adaptable and have adapted to obtain food in many different ecosystems. The majority of the food energy required is supplied by the industrial food industry, which produces food with intensive agriculture and distributes it through complex food processing and food distribution systems. This system of conventional agriculture relies heavily on fossil fuels, which means that the food and agricultur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysiphe
''Erysiphe'' is a genus of fungi in the family Erysiphaceae. Many of the species in this genus are plant pathogens which cause powdery mildew. Species This genus includes, but is not limited to the following species: * ''Erysiphe alphitoides'' * '' Erysiphe azerbaijanica'' * ''Erysiphe betae'' * '' Erysiphe brunneopunctata'' * '' Erysiphe cichoracearum'' * '' Erysiphe communis'' * ''Erysiphe cruciferarum'' * '' Erysiphe fernandoae'' * '' Erysiphe flexuosa'' * '' Erysiphe heraclei'' * '' Erysiphe lespedezae'' 1. Xiao, Y.-T., C.-J. Wang, T.-C. Huang, and Y.-M. Shen. 2020. Erysiphe lespedezae causing powdery mildew on Bauhinia variegata, B. blakeana and Desmodium caudatum in Taiwan. Forest Pathology 50(5):e12631. * '' Erysiphe michikoae'' * '' Erysiphe nitida * '' Erysiphe pisi'' * ''Erysiphe polygoni'' * '' Erysiphe robiniae'' * '' Erysiphe syringae'' Former species * ''Blumeria graminis'' * ''Uncinula necator ''Uncinula necator'' (syn. ''Erysiphe necator'') is a fungus that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
