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Curtobacterium Flaccumfaciens Pv. Flaccumfaciens
''Curtobacterium flaccumfaciens'' is a Gram-positive bacterium that causes disease on a variety of plants. Gram-positive bacterium characteristics include small irregular rods, lateral flagella, the ability to persist in aerobic environments, and cells containing catalase. In the interest of studying pathogenicity in plants, the species ''Curtobacterium flaccumfaciens'' is broken down further into pathovars, which help to better describe the pathogen. Hosts and symptoms ''Curtobacterium flaccumfacien'' is a bacterial wilt pathogen. The hallmark symptoms of bacterial wilt are leaf and petiole wilting. Chlorosis of the leaf and tissue occurs due to the lack of water transport. ''Curtobacterium flaccumfaciens'' as a species has a wide host range not limited to kidney beans, soybeans, tulips, and tomatoes. However, the species is artificially separated into a pathovar based on host range and symptoms. One of the economically important pathovars is ''Curtobacterium flaccumfaciens' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gram-positive
In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall. Gram-positive bacteria take up the crystal violet stain used in the test, and then appear to be purple-coloured when seen through an optical microscope. This is because the thick peptidoglycan layer in the bacterial cell wall retains the stain after it is washed away from the rest of the sample, in the decolorization stage of the test. Conversely, gram-negative bacteria cannot retain the violet stain after the decolorization step; alcohol used in this stage degrades the outer membrane of gram-negative cells, making the cell wall more porous and incapable of retaining the crystal violet stain. Their peptidoglycan layer is much thinner and sandwiched between an inner cell membrane and a bacterial outer membrane, causing them to take up the counterstain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propagule
In biology, a propagule is any material that functions in propagating an organism to the next stage in its life cycle, such as by dispersal. The propagule is usually distinct in form from the parent organism. Propagules are produced by organisms such as plants (in the form of seeds or spores), fungi (in the form of spores), and bacteria (for example endospores or microbial cysts). In disease biology, pathogens are said to generate infectious propagules, the units that transmit a disease. These can refer to bacteria, viruses, fungi, or protists, and can be contained within host material. For instance, for influenza, the infectious propagules are carried in droplets of host saliva or mucus that are expelled during coughing or sneezing. In horticulture, a propagule is any plant material used for the purpose of plant propagation. In asexual reproduction, a propagule is often a stem cutting. In some plants, a leaf section or a portion of root can be used. In sexual reproduction, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microbacteriaceae
Microbacteriaceae is a family of bacteria of the order Actinomycetales. They are Gram-positive soil organisms. Genera The family ''Microbacteriaceae'' comprises the following genera: * '' Agreia'' Evtushenko ''et al''. 2001 * '' Agrococcus'' Groth ''et al''. 1996 * ''Agromyces'' Gledhill and Casida 1969 (Approved Lists 1980) * '' Allohumibacter'' Kim ''et al''. 2016 * '' Alpinimonas'' Schumann ''et al''. 2012 * '' Amnibacterium'' Kim and Lee 2011 * '' Arenivirga'' Hamada ''et al''. 2017 * '' Aurantimicrobium'' Nakai ''et al''. 2015 * '' Canibacter'' Aravena-Román ''et al''. 2014 * '' Clavibacter'' Davis ''et al''. 1984 * '' Cnuibacter'' Zhou ''et al''. 2016 * '' Compostimonas'' Kim ''et al''. 2012 * '' Conyzicola'' Kim ''et al''. 2014 * "'' Crocebacterium''" Rogers & Doran-Peterson 2006 * '' Cryobacterium'' Suzuki ''et al''. 1997 * "'' Cryocola''" Gavrish ''et al''. 2003 * '' Curtobacterium'' Yamada and Komagata 1972 (Approved Lists 1980) * '' Diaminobutyricibacter'' Kim ''et ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European And Mediterranean Plant Protection Organization
The European and Mediterranean Plant Protection Organization (EPPO) is an intergovernmental organisation responsible for European cooperation in plant protection in the European and Mediterranean region. Founded on April 18th, 1951 and based in Paris, France, EPPO is the Regional Plant Protection Organization (RPPO) for Europe under the International Plant Protection Convention (IPPC). To meet its objectives to protect plants, strategize against the introduction and spread of dangerous pests, and to promote safe and effective control methods, EPPO develops international standards and recommendations, provides reporting services, participates in global discussions on plant health, EPPO hold regular expert working groups, and maintained EPPO codes. History Founded in 1951 and based in Paris, France, EPPO is the Regional Plant Protection Organization (RPPO) for Europe under the International Plant Protection Convention (IPPC). The intergovernmental organisation responsible for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Soybean Diseases
Soybean plants (''Glycine max'') are subject to a variety of diseases and pests. Bacterial diseases Fungal diseases Nematodes, parasitic Viral diseases See also * Soybean management practices References Common Names of Diseases, The American Phytopathological Society {{Soy Soybean The soybean, soy bean, or soya bean (''Glycine max'') is a species of legume native to East Asia, widely grown for its edible bean, which has numerous uses. Traditional unfermented food uses of soybeans include soy milk, from which tofu ... Pulse crop diseases Soybean diseases ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarantine
A quarantine is a restriction on the movement of people, animals and goods which is intended to prevent the spread of disease or pests. It is often used in connection to disease and illness, preventing the movement of those who may have been exposed to a communicable disease, yet do not have a confirmed medical diagnosis. It is distinct from medical isolation, in which those confirmed to be infected with a communicable disease are isolated from the healthy population. Quarantine considerations are often one aspect of border control. The concept of quarantine has been known since biblical times, and is known to have been practised through history in various places. Notable quarantines in modern history include the village of Eyam in 1665 during the bubonic plague outbreak in England; East Samoa during the 1918 flu pandemic; the Diphtheria outbreak during the 1925 serum run to Nome, the 1972 Yugoslav smallpox outbreak, the SARS pandemic, the Ebola pandemic and extensive qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seedcoat
A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm plants. Seeds are the product of the ripened ovule, after the embryo sac is fertilized by sperm from pollen, forming a zygote. The embryo within a seed develops from the zygote, and grows within the mother plant to a certain size before growth is halted. The seed coat arises from the integuments of the ovule. Seeds have been an important development in the reproduction and success of vegetable gymnosperm and angiosperm plants, relative to more primitive plants such as ferns, mosses and liverworts, which do not have seeds and use water-dependent means to propagate themselves. Seed plants now dominate biological niches on land, from forests to grasslands both in hot and cold climates. The term "seed" also has a general meaning that anted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KOH Test
The KOH Test for ''Candida albicans'', also known as a potassium hydroxide preparation or KOH prep, is a quick, inexpensive fungal test to differentiate dermatophytes and ''Candida albicans'' symptoms from other skin disorders like psoriasis and eczema. Dermatophytes are a type of fungus that invades the top layer of the skin, hair, or nails. There are three genera of fungi commonly implicated: Trichophyton (found in skin, nail, and hair infections), Epidermophyton (skin and nail infections), and Microsporum (skin and hair infections). Dermatophytes produce an infection commonly known as ringworm or tinea. It can appear as "jock itch" in the groin or inner thighs (tinea cruris); on the scalp and hair (tinea capitis) resulting in brittle hair shafts that fall out easily. Tinea unguium affects the nails and athlete's foot (tinea pedis) affects the feet. Tinea versicolor refers to a fungal infection of the skin caused by ''Malassezia furfur''. It appears anywhere on the skin and pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil
Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish ''dirt'' from ''soil'' by restricting the former term specifically to displaced soil. Soil consists of a solid phase of minerals and organic matter (the soil matrix), as well as a porous phase that holds gases (the soil atmosphere) and water (the soil solution). Accordingly, soil is a three-state system of solids, liquids, and gases. Soil is a product of several factors: the influence of climate, relief (elevation, orientation, and slope of terrain), organisms, and the soil's parent materials (original minerals) interacting over time. It continually undergoes development by way of numerous physical, chemical and biological processes, which include weathering with associated erosion. Given its complexity and strong internal connectedness, soil ecologists regard soil as an ecosystem. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacterium
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humidity
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on the temperature and pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air. A related parameter is the dew point. The amount of water vapor needed to achieve saturation increases as the temperature increases. As the temperature of a parcel of air decreases it will eventually reach the saturation point without adding or losing water mass. The amount of water vapor contained within a parcel of air can vary significantly. For example, a parcel of air near saturation may contain 28 g of water per cubic metre of air at , but only 8 g of water per cubic metre of air at . Three primary measurements of humidity are widely employed: absolute, relative, and specific. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperature
Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have relied on various reference points and thermometric substances for definition. The most common scales are the Celsius scale with the unit symbol °C (formerly called ''centigrade''), the Fahrenheit scale (°F), and the Kelvin scale (K), the latter being used predominantly for scientific purposes. The kelvin is one of the seven base units in the International System of Units (SI). Absolute zero, i.e., zero kelvin or −273.15 °C, is the lowest point in the thermodynamic temperature scale. Experimentally, it can be approached very closely but not actually reached, as recognized in the third law of thermodynamics. It would be impossible to extract energy as heat from a body at that temperature. Temperature is important in all fields of na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
