|
Olpidium Cucurbitacearum
''Olpidium'' is a fungal genus in the family Olpidiaceae. Members of ''Olpidium'' are zoosporic pathogens of plants, animals, fungi, and oomycetes. Morphology ''Olpidium'' species exist as spherical zoosporangia inside the cells of their host. Zoospores emerge from a single discharge tube and have a single, posterior whiplash flagellum. Resting spores can be smooth or ornamented. Ecology ''Olpidium'' species infect a wide variety of plants, animals, protists, and fungi and are fairly common in aquatic and terrestrial ecosystems. Most of what is known about the genus comes from those species that infect higher plants, especially crops. In higher plants, infection with ''Olpidium'' often causes little to no symptoms. An exception is '' Olpidium viciae'', which causes broadbean blister. However, ''Olpidium'' species can vector plant viruses. For example, ''Olpidium brassicae'' transmits big-vein virus and big-vein associated varicosavirus among lettuce plants, and transmits tob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Braun
Alexander Carl Heinrich Braun (10 May 1805 – 29 March 1877) was a German botanist from Regensburg, Bavaria. His research centered on the morphology of plants and was a very influential teacher who worked as a professor of botany at the universities of Freiburg, Giessen, and Berlin at various times. He was also the director of the Berlin Botanical Garden. Biography Braun was born in Regensburg (Ratisbon) where his father Alexander was a tax inspector in the postal department. His mother Henriette was the daughter of a priest and mathematics professor. He studied at Karlsruhe and Freiburg (Breisgau) where his father was transferred. He went to the University of Heidelberg to study medicine. His teachers included Gottlieb Wilhelm Bischoff, Johann Heinrich Dierbach and Franz Joseph Schelver. At Heidelberg he studied with Louis Agassiz, Carl Schimper and George Engelmann. Agassiz would marry Braun's sister Cecilie while Schimper was engaged briefly to Braun's sister Emilie. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Biology, biological Kingdom (biology), kingdom Animalia (). With few exceptions, animals heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, have myocytes and are motility, able to move, can reproduce sexually, and grow from a hollow sphere of Cell (biology), cells, the blastula, during embryonic development. Animals form a clade, meaning that they arose from a single common ancestor. Over 1.5 million extant taxon, living animal species have been species description, described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from to . They have complex ecologies and biological interaction, interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chytridiales
Fungi of the order Chytridiales, like other members of its division, may either have a monocentric thallus or a polycentric rhizomycelium. When the ribosomal genes of members classified in this order were first examined using molecular techniques, it was discovered that the order contained some species that were not related. With the culture and characterization of '' Chytridium olla'', the type species of this order, the limits of the Chytridiales were established. The Chytridiales is now monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ... and species such as '' Polychytrium aggregatum'', '' Chytriomyces angularis'' and '' Cladochytrium replicatum'' have been transferred to other orders. Genera ''incertae sedis'' * '' Achlyella'' * '' Achlyogeton'' * '' Corallio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cucurbitaceae
The Cucurbitaceae (), also called cucurbits or the gourd family, are a plant family (biology), family consisting of about 965 species in 101 genera.Cucurbitaceae Juss. ''Plants of the World Online''. Retrieved 10 June 2024. Those of most agricultural, commercial or nutritional value to humans include: *''Cucurbita'' – Squash (plant), squash, pumpkin, zucchini (courgette), some gourds. *''Lagenaria'' – calabash (bottle gourd) and other, ornamental gourds. *''Citrullus'' – watermelon (''C. lanatus'', ''C. colocynthis''), plus several other species. *''Cucumis'' – cucumber (''C. sativus''); various melons and vines. *''Momordica'' – Momordica charantia, bitter melon. *''Luffa'' – commonly called 'luffa' or ‘luffa squash'; sometimes spelled loofah. Young fruits may be cooked; when fully ripened, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olpidium Cucurbitacearum
''Olpidium'' is a fungal genus in the family Olpidiaceae. Members of ''Olpidium'' are zoosporic pathogens of plants, animals, fungi, and oomycetes. Morphology ''Olpidium'' species exist as spherical zoosporangia inside the cells of their host. Zoospores emerge from a single discharge tube and have a single, posterior whiplash flagellum. Resting spores can be smooth or ornamented. Ecology ''Olpidium'' species infect a wide variety of plants, animals, protists, and fungi and are fairly common in aquatic and terrestrial ecosystems. Most of what is known about the genus comes from those species that infect higher plants, especially crops. In higher plants, infection with ''Olpidium'' often causes little to no symptoms. An exception is '' Olpidium viciae'', which causes broadbean blister. However, ''Olpidium'' species can vector plant viruses. For example, ''Olpidium brassicae'' transmits big-vein virus and big-vein associated varicosavirus among lettuce plants, and transmits tob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olpidium Bornovanus
''Olpidium'' is a fungi, fungal genus in the family Olpidiaceae. Members of ''Olpidium'' are zoospore, zoosporic pathogens of plants, animals, fungi, and oomycetes. Morphology ''Olpidium'' species exist as spherical zoosporangia inside the cells of their host. Zoospores emerge from a single discharge tube and have a single, posterior whiplash flagellum. Resting spores can be smooth or ornamented. Ecology ''Olpidium'' species infect a wide variety of plants, animals, protists, and fungi and are fairly common in aquatic and terrestrial ecosystems. Most of what is known about the genus comes from those species that infect higher plants, especially crops. In higher plants, infection with ''Olpidium'' often causes little to no symptoms. An exception is ''Olpidium viciae'', which causes broadbean blister. However, ''Olpidium'' species can vector plant viruses. For example, ''Olpidium brassicae'' transmits big-vein virus and big-vein associated varicosavirus among lettuce plants, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tobacco Mosaic Virus
Tobacco mosaic virus (TMV) is a positive-sense single-stranded RNA virus species in the genus '' Tobamovirus'' that infects a wide range of plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns, such as "mosaic"-like mottling and discoloration on the leaves (hence the name). TMV was the first virus to be discovered. Although it was known from the late 19th century that a non-bacterial infectious disease was damaging tobacco crops, it was not until 1930 that the infectious agent was determined to be a virus. It is the first pathogen identified as a virus. The virus was crystallised by Wendell Meredith Stanley. It has a similar size to the largest synthetic molecule, known as PG5 with comparable length and diameter. History In 1886, Adolf Mayer first described the tobacco mosaic disease that could be transferred between plants, similar to bacterial infections. In 1892, Dmitri Ivanovsky gave the first concrete e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varicosavirus
''Varicosavirus'' is a genus of plant viruses. The virus is associated with swelling in plant vein tissues. They are negative single stranded RNA viruses. The genus contains 43 species. Structure Virions consist of a non-enveloped rod-shaped capsid, having a helical symmetry of 120–360 nm in length, and a width of 18–30 nm. Genome The genome consists of a bi-segmented linear, single-stranded negative sense RNA. The first segment is about 6350–7000 nucleotides Nucleotides are Organic compound, organic molecules composed of a nitrogenous base, a pentose sugar and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both o ... in length; the second, about 5630–6500 nucleotides in length. References External links Viralzone: ''Varicosavirus'' Varicosaviruses Virus genera {{Virus-stub ... [...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 Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ....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] |
Plant Virus
Plant viruses are viruses that have the potential to affect plants. Like all other viruses, plant viruses are obligate intracellular parasites that do not have the molecular machinery to replicate without a host. Plant viruses can be pathogenic to vascular plants ("higher plants"). Many plant viruses are rod-shaped, with protein discs forming a tube surrounding the viral genome; isometric particles are another common structure. They rarely have an envelope. The great majority have an RNA genome, which is usually small and single stranded (ss), but some viruses have double-stranded (ds) RNA, ssDNA or dsDNA genomes. Although plant viruses are not as well understood as their animal counterparts, one plant virus has become very recognizable: '' tobacco mosaic virus'' (TMV), the first virus to be discovered. This and other viruses cause an estimated US$60 billion loss in crop yields worldwide each year. Plant viruses are grouped into 73 genera and 49 families. However, these fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadbean
''Vicia faba'', commonly known as the broad bean, fava bean, or faba bean, is a species of vetch, a flowering plant in the pea and bean family Fabaceae. It is widely cultivated as a crop for human consumption, and also as a cover crop. Varieties with smaller, harder seeds that are fed to horses or other animals are called field bean, tic bean or tick bean. This legume is commonly consumed in many national and regional cuisines. Some people suffer from favism, a hemolytic response to the consumption of broad beans, a condition linked to a metabolic disorder known as G6PDD. Otherwise the beans, with the outer seed coat removed, can be eaten raw or cooked. With young seed pods, the outer seed coat can be eaten, and in very young pods, the entire seed pod can be eaten. Description ''Vicia faba'' is a stiffly erect, annual plant tall, with two to four stems that are square in cross-section. The leaves are long, pinnate with 2–7 leaflets, and glaucous (grey-green). Unlike mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
