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Water Mold
Oomycota forms a distinct phylogenetic lineage of fungus-like eukaryotic microorganisms, called oomycetes (). They are filamentous and heterotrophic, and can reproduce both sexually and asexually. Sexual reproduction of an oospore is the result of contact between hyphae of male antheridia and female oogonia; these spores can overwinter and are known as resting spores. Asexual reproduction involves the formation of chlamydospores and sporangia, producing motile zoospores. Oomycetes occupy both saprophytic and pathogenic lifestyles, and include some of the most notorious pathogens of plants, causing devastating diseases such as late blight of potato and sudden oak death. One oomycete, the mycoparasite ''Pythium oligandrum'', is used for biocontrol, attacking plant pathogenic fungi. The oomycetes are also often referred to as water molds (or water moulds), although the water-preferring nature which led to that name is not true of most species, which are terrestrial pathogens. Oomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saprolegnia
''Saprolegnia'' is a genus of water moulds often called cotton moulds because of the characteristic white or grey fibrous patches they form. Current taxonomy puts ''Saprolegnia'' as a genus of the heterokonts in the order Saprolegniales. Habits ''Saprolegnia'', like most oomycetes, is both a saprotroph and necrotroph. Typically feeding on waste from fish or other dead cells, they will also take advantage of creatures that have been injured. An infection is known as oomycosis. ''Saprolegnia'' is tolerant to a wide range of temperature, , but is more prevalent in lower temperatures. While it is found most frequently in freshwater, it will also tolerate brackish water and even moist soil. ''Saprolegnia'' filaments (hyphae) are long with rounded ends, containing the zoospores. Saprolegnia generally travels in colony, colonies consisting of one or more species. They first form a mass of individual hyphae. When the mass of hyphae grows large enough in size to be seen without use of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saprolegniaceae
Saprolegniaceae is a family of freshwater mould. James Ellis Humphrey (1861-1897), an American Mycologist did significant work on this family. Taxonomy Saprolegniaceae contains the following genera, species, and subspecies. * '' Achlya'' ** '' Achlya ambisexualis'' ** ''Achlya americana'' ** ''Achlya androgyna'' ** '' Achlya apiculata'' ** ''Achlya aquatica'' ** '' Achlya bisexualis'' ** '' Achlya bonariensis'' ** '' Achlya caroliniana'' ** '' Achlya catenulata'' ** '' Achlya colorata'' ** '' Achlya conspicua'' ** '' Achlya crenulata'' ** ''Achlya debaryana'' ** ''Achlya dubia'' ** ''Achlya flagellata'' ** '' Achlya glomerata'' ** '' Achlya heterosexualis'' ** '' Achlya hypogyna'' ** '' Achlya intricata'' ** '' Achlya klebsiana'' ** '' Achlya oblongata'' ** ''Achlya oligacantha'' ** '' Achlya orion'' ** '' Achlya ornata'' ** '' Achlya oviparvula'' ** ''Achlya papillosa'' ** '' Achlya primoachlya'' ** '' Achlya prolifera'' ** '' Achlya proliferoides'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sesame
Sesame ( or ; ''Sesamum indicum'') is a flowering plant in the genus ''Sesamum'', also called benne. Numerous wild relatives occur in Africa and a smaller number in India. It is widely naturalized in tropical regions around the world and is cultivated for its edible seeds, which grow in pods. World production in 2018 was , with Sudan, Myanmar, and India as the largest producers. Sesame seed is one of the oldest oilseed crops known, domesticated well over 3,000 years ago. ''Sesamum'' has many other species, most being wild and native to sub-Saharan Africa. ''S. indicum,'' the cultivated type, originated in India. It tolerates drought conditions well, growing where other crops fail. Sesame has one of the highest oil contents of any seed. With a rich, nutty flavor, it is a common ingredient in cuisines around the world. Like other foods, it can trigger allergic reactions in some people. Etymology The word "sesame" is from Latin ''sesamum'' and Greek σήσαμον : ''sēsamon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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