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Gelidiales
The Gelidiales is a small order of red algae containing ten genera, and approximately 130–160 species, many of which are used to make agar Agar ( or ), or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from ogonori (''Gracilaria'') and "tengusa" (''Gelidiaceae''). As found in nature, agar is .... References External linksTree of Life: Gelidiales Red algae orders {{Rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gelidium Corneum
''Gelidium'' is a genus of thalloid red algae comprising 134 species. Its members are known by a number of common names.Recorded common names are tengusa, makusa, genso, niu mau tsai, japansche scheleiachtige mos, steen-or klipbloem, hay tsay, olus marinus, sajur laut, tschintschau, tschoo-hoae, onikusa, hirakusa, obusa, rødalge-slaegt, gelídeos, punalevä-suku, tokoroten, kanten, tokoro-tengusa, kinukusa, isingglass, hai-ten-gusa, tocoroten, tengusa-agar, limu lo-loa, hai-tengusa, onigusa, oyakusa, kanten weed, goumaocai, hime tengusa, shihua and tanmae. Taxonomy and Nomenclature Gelidiaceae has 159 species, considered to be the largest family in Gelidiales with four major genera: ''Capreolia, Gelidium, Gelidiophycus,'' and ''Ptilophora'.'' ''Gelidium'' was first described by Lamouroux in 1813 and is regarded to be one the genus with the most species. Species diversity has been established by previous studies, whereas, molecular analysis reveals biogeographic relations that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gelidiales
The Gelidiales is a small order of red algae containing ten genera, and approximately 130–160 species, many of which are used to make agar Agar ( or ), or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from ogonori (''Gracilaria'') and "tengusa" (''Gelidiaceae''). As found in nature, agar is .... References External linksTree of Life: Gelidiales Red algae orders {{Rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterocladiaceae
The Pterocladiaceae is a small family of red algae containing 2 genera of agarophytes. They are found growing on the coast of Portugal, South Africa, India, Japan, Mexico, Chile and New Zealand.Richard Koplik, Karel Cejpek and Jan Velisek From the Gelidiales order, ''Gelidium'' and ''Pterocladia'' , are two of the most widespread genera (which have been often confused for each other) of the Gelidiaceae family. They are separated only by basic features of cystocarps (fruiting structures). The genus ''Pterocladiella'' was later established to segregate from ''Pterocladia'' those species with distinct carposporophyte developmental characters (Santelices and Hommersand 1997). Molecular analyses of taxa within the Gelidiales have identified four major lineages equivalent to ''Gelidiella'', ''Pterocladia'' and ''Pterocladiella'' as sister taxa, and a fourth large clade including species of ''Acanthopeltis'', ''Gelidium'', ''Ptilophora'', ''Porphyroglossum'' and ''Capreolia'' (Fres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gelidiellaceae
The Gelidiellaceae is a small family of red algae containing 5 genera of agarophytes. Members of the family Gelidiellaceace are noted by the lack of hyphae and the lack of sexual reproduction. They have 2 kinds of tetrasporangial sori (either the acerosa-type or the pannosa-type). ''Gelidiella acerosa'' is found worldwide, from Europe, North America, Central America and South America, the Atlantic Islands, Africa, Indian Ocean islands, South west Asia, Asia (including China, Japan and Taiwan), South-east Asia (including Vietnam, Myanmar, Thailand, Singapore, Philippines and Indonesia), Australia, New Zealand and the Pacific islands. Taxonomy It was originally formed in 1961, to hold ''Gelidiella'' and (its single known species, ''Gelidiella acerosa''), as it lacked a medullary hyphae (or rhizines) and lack of sexual phase in life. More species of ''Gelidiella'' from France and the British Isles were added. In 1987, Maggs and Guiry thought that the family should be merged with Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gelidiaceae
The Gelidiaceae is a small family of red algae containing eight genera. Many species of this algae are used to make agar. Uses Agar can be derived from many types of red seaweeds, including those from families such as ''Gelidiaceaae'', ''Gracilariaceae'', '' Gelidiellaceae'' and '' Pterocladiaceae''. It is a polysaccharide Polysaccharides (), or polycarbohydrates, are the most abundant carbohydrates found in food. They are long chain polymeric carbohydrates composed of monosaccharide units bound together by glycosidic linkages. This carbohydrate can react with wa ... located in the inner part of the red algal cell wall. It is used in food material, medicines, cosmetics, therapeutic and biotechnology industries.Mohammed Kuddus and Roohi (editors) References Red algae families Edible algae Taxa named by Friedrich Traugott Kützing {{Rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Algae
Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recognized species with taxonomic revisions ongoing. The majority of species (6,793) are found in the Florideophyceae (class), and mostly consist of multicellular, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats but relatively rare in freshwaters. Approximately 5% of red algae species occur in freshwater environments, with greater concentrations found in warmer areas. Except for two coastal cave dwelling species in the asexual class Cyanidiophyceae, there are no terrestrial species, which may be due to an evolutionary bottleneck in which the last common ancestor lost about 25% of its core genes and much of its evolutionary plasticity. The red algae form a distinct group characterized by having eukaryotic cells without flagella and centrioles, chloroplasts that l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harald Kylin
Johan Harald Kylin (5 February 1879 – 16 December 1949) was a Swedish botanist specializing in phycology and a professor at Lund University. He was also editor of the Botaniska Notiser ''Botaniska Notiser'' was a Swedish scientific periodical concerning botany, issued in Lund, by Societate botanica Lundensi or unds Botaniska Förening It was published from 1839 to 1980, when it fused with '' Botanisk Tidsskrift'', '' Friesia'' ..., a Swedish scientific periodical from 1922 to 1928. Works * ''Die Gattungen der Rhodophyceen'' References 20th-century Swedish botanists 1879 births 1949 deaths {{botanist-stub ... [...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] |
Agar
Agar ( or ), or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from ogonori (''Gracilaria'') and "tengusa" (''Gelidiaceae''). As found in nature, agar is a mixture of two components, the linear polysaccharide agarose and a heterogeneous mixture of smaller molecules called agaropectin. It forms the supporting structure in the cell walls of certain species of algae and is released on boiling. These algae are known as agarophytes, belonging to the Rhodophyta (red algae) phylum. The processing of food-grade agar removes the agaropectin, and the commercial product is essentially pure agarose. Agar has been used as an ingredient in desserts throughout Asia and also as a solid substrate to contain culture media for microbiological work. Agar can be used as a laxative; an appetite suppressant; a vegan substitute for gelatin; a thickener for soups; in fruit preserves, ice cream, and other desser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
