|
Trentepohliaceae
Trentepohliaceae are a family (biology), family of green algae, and the only family in the order Trentepohliales. It is a member of the Ulvophyceaen green algae. The family is characterized by traits like net-like chloroplasts without pyrenoids, cell walls with plasmodesmata and cytokinesis by production of a phragmoplast. They are subaerial algae with a worldwide distribution. Description Typically, members of Trentepohliaceae consist of uniseriate filaments that are variably branched. In some genera, the filaments are branched and produce small, bushy tufts; in others, the filaments are crowded, and grow into a pseudoparenchymatous small disc. Reproduction is both asexual and sexual. Zoospores are formed in what is called a "sporangiate-lateral", in which a sporangium is attached via a highly modified branch called a "suffultory cell". Their life cycle involves an alternation of generations between a sporophyte phase and a gametophyte phase; the sporophyte and gametophyte may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trentepohlia Aurea
''Trentepohlia aurea'' is a species of filamentous terrestrial green alga in the family Trentepohliaceae. It grows on a variety of substrates including rocks, old walls, concrete surfaces, tree bark, rotting wood, mosses, and wet soil. The orange coloration results from carotenoid pigments in the algal cells. ''Trentepohlia aurea'' is the type species of the genus ''Trentepohlia (alga), Trentepohlia''. In the British Isles, it is the most widespread and abundant species of ''Trentepohlia''. However, many records need to be reassessed, since the name has been broadly misapplied to specimens of other species, such as ''Trentepohlia abietina''. Description ''Trentepohlia aurea'' consists of small bushy tufts which range in color from golden yellow to orange-brown (dried specimens are duller). The thallus consists of a bunch of erect filaments, which arise from a reduced system of prostrate filaments. Erect filaments are up to 1.5 mm tall, and are unbranched or sparsely to densely b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phycopeltis
''Phycopeltis'' is a genus of green algae in the family Trentepohliaceae.See the NCBIbr>webpage on Phycopeltis Data extracted from the It is widespread in humid, tropical or subtropical regions. It typically occurs as an epiphyte on the surface of leaves, but may sometimes be found on rock, metal, or plastic surfaces. It can also be a phycobiont in lichens. Description ''Phycopeltis'' consists of a single layer of coalescing, prostrate filaments that irregularly or regularly branch to form a small rounded or irregular disk. Some species have erect filaments growing out from the thallus, and/or "glandular" papillate cells. The thalli grow up to 7 mm in diameter. In shade, the thalli are green; with exposure to light or less humid conditions, they become pale yellow, orange or reddish brown due to the accumulation of carotenoid pigments and oil. Asexual reproduction occurs by quadriflagellate zoospores, which are produced in sporangia that arise on curved, one- to many-celled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printzina
''Printzina'' is a genus of green algae.Guiry, M.D., John, D.M., Rindi, F. and McCarthy, T.K. (Ed) 2007. ''New Survey of Clare Island''. Volume 6: The Freshwater and Terrestrial Algae. Royal Irish Academy. in the family Trentepohliaceae.See the NCBI The National Center for Biotechnology Information (NCBI) is part of the National Library of Medicine (NLM), a branch of the National Institutes of Health (NIH). It is approved and funded by the government of the United States. The NCBI is loca ...br>webpage on Printzina Data extracted from the Species ''Printzina lagenifera'' (Hildebrandt) Thompson et Wujek. Description Appears as small, reddish cushion-like masses. Consisting of entangled filaments of globular or elliptical cells 6 - 12μm wide.. It forms reddish streeks. References Trentepohliaceae Ulvophyceae genera {{Ulvophyceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trentepohlia (alga)
''Trentepohlia'' is a genus of filamentous chlorophyte green algae in the family Trentepohliaceae, living free on terrestrial supports such as tree trunks and wet rocks or symbiotically in lichens. The filaments of ''Trentepohlia'' often have a strong orange colour (photograph at right) caused by the presence of large quantities of carotenoid pigments which mask the green of the chlorophyll. Nomenclature Organisms belonging to the genus ''Trentepohlia'' were first described by Linnaeus in 1759; he named his species ''Byssus aureus'' (currently known as ''Trentepohlia aurea''). The genus was circumscribed by Carl Friedrich Philipp von Martius in Fl. Crypt. Erlang. on page 351 in 1817. The genus name of ''Trentepohlia'' is in honour of Johann Friedrich Trentepohl (1748–1806), who was a German clergyman and botanist. He worked as a lecturer and Pastor in various places in Wesermarsch. Martius' name was conserved in favor of the moss genus ''Trentepohlia'' and the Brassicaceae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulvophyceae
The Ulvophyceae or ulvophytes are a class of green algae, distinguished mainly on the basis of Ultrastructure, ultrastructural morphology, Biological life cycle, life cycle and molecular phylogenetics, molecular phylogenetic data. The sea lettuce, sea lettuce, ''Ulva'', belongs here. Other well-known members include ''Caulerpa'', ''Codium'', ''Acetabularia'', ''Cladophora'', ''Trentepohlia (alga), Trentepohlia'' and ''Monostroma''. The Ulvophytes are diverse in their Morphology (biology), morphology and their habitat (ecology), habitat. Most are seaweeds such as those listed above. Others, such as ''Rhizoclonium'', ''Pithophora'' and some species of ''Cladophora'' live in fresh water and in some areas are considered weeds. Morphology Ulvophycean algae are diverse in morphology. The thalli are typically colonial (some are unicellular). A few taxa have flagella in their vegetative stage, such as ''Oltmannsiellopsis''. Common forms include filaments (both unbranched and branched) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephaleuros
''Cephaleuros'' is a genus of thalloid green algae comprising approximately 14 species. Its common name is red rust. ''Cephaleuros'' species are parasitic algae which grow within vascular plants, typically within the subtropics or tropics. Description ''Cephaleuros'' forms velvet-like spots up to 10 mm or more in diameter; these consists of a filamentous or pseudoparenchymatous, prostrate thallus and an erect system of filaments which branch from the prostrate thallus. The organism grows below the cuticle or epidermis of the host plant. Filaments branch dichotomously or pinnately, forming roughly circular thalli. Cells contain a single nucleus and a irregularly reticulate, parietal chloroplast with no pyrenoids. The cytoplasm often contains accumulations of carotenoid pigments, giving the thallus an orange-red color. Identification ''Cephaleuros'' is often confused with non-algal taxa, since the fuzzy reddish spots are reminiscent of rust disease. For species identification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one of the kingdom (biology)#Six kingdoms (1998), traditional eukaryotic kingdoms, along with Animalia, Plantae, and either Protista or 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 motility, 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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desiccation
Desiccation is the state of extreme dryness, or the process of extreme drying. A desiccant is a hygroscopic (attracts and holds water) substance that induces or sustains such a state in its local vicinity in a moderately sealed container. The word desiccation comes . Industry Desiccation is widely employed in the oil and gas industry. These materials are obtained in a hydrated state, but the water content leads to corrosion or is incompatible with downstream processing. Removal of water is achieved by cryogenics, cryogenic condensation, absorption into glycols, and absorption onto desiccants such as silica gel. Laboratory A desiccator is a heavy glass or plastic container, now somewhat antiquated, used in practical chemistry for drying or keeping small amounts of materials very dry. The material is placed on a shelf, and a drying agent or ''desiccant'', such as dry silica gel or anhydrous sodium hydroxide, is placed below the shelf. Often some sort of humidity indicator is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subaerial
In natural science, subaerial (literally "under the air") has been used since 1833,Subaerial in the Merriam-Webster dictionary. notably in and , to describe features and events occurring or formed on or near the 's land surface. They are thus exposed to Earth's atmosphere. This may be contrasted with '' subaqueous'' events or features located below a water surface, '' |
Phycobiont
A lichen ( , ) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. . Lichens are the lifeform that first brought the term symbiosis (as ''Symbiotismus'') into biological context. Lichens have since been recognized as important actors in and producers which many higher trophic feeders feed on, such as reindeer, gastropods, nematodes, mites, and springtails. Lich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Distribution
In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and environmental conditions, though this is not always so. Killer whales ( orcas) are among the most well-known cosmopolitan species on the planet, as they maintain several different resident and transient (migratory) populations in every major oceanic body on Earth, from the Arctic Circle to Antarctica and every coastal and open-water region in-between. Such a taxon (usually a species) is said to have a ''cosmopolitan'' distribution, or exhibit cosmopolitanism, as a species; another example, the rock dove (commonly referred to as a ' pigeon'), in addition to having been bred domestically for centuries, now occurs in most urban areas around the world. The extreme opposite of a cosmopolitan species is an endemic (native) species, or one foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gametophyte
A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the sexual phase in the life cycle of plants and algae. It develops sex organs that produce gametes, haploid sex cells that participate in fertilization to form a diploid zygote which has a double set of chromosomes. Cell division of the zygote results in a new diploid multicellular organism, the second stage in the life cycle known as the sporophyte. The sporophyte can produce haploid spores by meiosis that on germination produce a new generation of gametophytes. Algae In some multicellular green algae ('' Ulva lactuca'' is one example), red algae and brown algae, sporophytes and gametophytes may be externally indistinguishable (isomorphic). In ''Ulva'', the gametes are isogamous, all of one size, shape and general morphology. Land plant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
