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Lambiella Aliphatica
''Lambiella aliphatica'' is a species of crustose lichen in the family Xylographaceae. Found in Alaska, it was described as a new species in 2020 by Toby Spribille and Philipp Resl. The type specimen was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park. Here it was found at an altitude of growing on an argillite rock in alpine scree. The specific epithet ''aliphatica'' refers to the unidentified fatty acids that are present in the thallus. It is the first member of genus ''Lambiella'' to contain primarily fatty acids in the thallus. '' Lambiella globulosa'' is similar in morphology, but this species contains stictic acid Stictic acid is an aromatic organic compound, a product of secondary metabolism in some species of lichens. Stictic acid is the subject of preliminary biomedical research. Stictic acid has cytotoxic and apoptotic effects ''in vitro''. Computation ... rather than fatty acids as the primary secondary metabolite. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustose Lichen
Crustose lichens are lichens that form a crust which strongly adheres to the Substrate (biology), substrate (soil, rock, tree bark, etc.), making separation from the substrate impossible without destruction. The basic structure of crustose lichens consists of a cortex (botany), cortex layer, an algal layer, and a medulla. The upper cortex layer is differentiated and is usually pigmented. The algal layer lies beneath the cortex. The medulla fastens the lichen to the substrate and is made up of Fungus, fungal hyphae. The surface of crustose lichens is characterized by branching cracks that periodically close in response to climatic variations such as alternate wetting and drying regimes. Subtypes * Powdery – considered as the simplest subtype due to the absence of an organized thallus. :The thallus appears powdery. :E.g. Genera ''Lepraria'', ''Vezdaea'' * Endolithic – grows inside the rock, usually in interstitial spaces between mineral grains. The :upper cortex is usually d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallus
Thallus (plural: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. Many of these organisms were previously known as the thallophytes, a polyphyletic group of distantly related organisms. An organism or structure resembling a thallus is called thalloid, thallodal, thalliform, thalline, or thallose. A thallus usually names the entire body of a multicellular non-moving organism in which there is no organization of the tissues into organs. Even though thalli do not have organized and distinct parts (leaves, roots, and stems) as do the vascular plants, they may have analogous structures that resemble their vascular "equivalents". The analogous structures have similar function or macroscopic structure, but different microscopic structure; for example, no thallus has vascular tissue. In exceptional cases such as the Lemnoideae, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Of Subarctic America
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Lichens Described In 2020
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Lichen Species
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Baeomycetales
The Baeomycetales are an order of mostly lichen-forming fungi in the subclass Ostropomycetidae, in the class Lecanoromycetes. It contains 8 families, 33 genera and about 170 species. As a result of molecular phylogenetics research published in the late 2010s, several orders were folded into the Baeomycetales, resulting in a substantial increase in the number of taxa. Taxonomy The family Baeomycetaceae was originally proposed by Barthélemy Charles Joseph Dumortier in 1829 (under the spelling ''Baeomyceae''); he included two genera, ''Baeomyces'' and ''Calicium''. Baeomycetaceae was initially classified in the Lecanorales, and Baeomycetaceae and Cladoniaceae were thought to be closely related, sharing a phylogenetic origin in Lecideaceae. It was transferred to the order Helotiales based on the structure of its ascus, which is similar to those in genus '' Leotia''. However, the Helotiales consists of mostly non-lichenised fungi. The first DNA studies conducted with ''Baeomyces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stictic Acid
Stictic acid is an aromatic organic compound, a product of secondary metabolism in some species of lichens. Stictic acid is the subject of preliminary biomedical research. Stictic acid has cytotoxic and apoptotic effects ''in vitro''. Computational studies suggest stictic acid may also stimulate p53 p53, also known as Tumor protein P53, cellular tumor antigen p53 (UniProt name), or transformation-related protein 53 (TRP53) is a regulatory protein that is often mutated in human cancers. The p53 proteins (originally thought to be, and often s ... reactivation. References Phenolic acids Phenol ethers Oxygen heterocycles Lactones Lichen products {{aromatic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, colour, pattern, size), i.e. external morphology (or eidonomy), as well as the form and structure of the internal parts like bones and organs, i.e. internal morphology (or anatomy). This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of gross structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Friedrich Burdach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambiella Globulosa
''Lambiella'' is a genus of lichen-forming fungi in the family Xylographaceae. The genus was circumscribed by German botanist Hannes Hertel in 1984, with '' Lambiella psephota'' assigned as the type species. The genus name of ''Lambiella'' is in honour of Elke Mackenzie (1911–1990), born as Ivan Mackenzie Lamb, who was a British polar explorer and botanist who specialised in the field of lichenology. Species *'' Lambiella aliphatica'' – Alaska, US *''Lambiella andreaeicola'' – Falkland Islands *''Lambiella arenosa'' – Oregon, US *''Lambiella caeca'' *''Lambiella furvella'' *''Lambiella fuscosora'' *''Lambiella globulosa'' – Europe *''Lambiella gyrizans'' *''Lambiella hepaticicola'' – Australia *''Lambiella impavida'' *''Lambiella insularis'' *''Lambiella isidiata'' – Venezuela *''Lambiella mullensis'' *'' Lambiella psephota'' *''Lambiella sphacelata'' *''Lambiella subpsephota'' – Falkland Islands The Falkland Islands (; es, Islas Malv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambiella
''Lambiella'' is a genus of lichen-forming fungi in the family Xylographaceae. The genus was circumscribed by German botanist Hannes Hertel in 1984, with '' Lambiella psephota'' assigned as the type species. The genus name of ''Lambiella'' is in honour of Elke Mackenzie (1911–1990), born as Ivan Mackenzie Lamb, who was a British polar explorer and botanist who specialised in the field of lichenology. Species *'' Lambiella aliphatica'' – Alaska, US *'' Lambiella andreaeicola'' – Falkland Islands *''Lambiella arenosa'' – Oregon, US *''Lambiella caeca'' *'' Lambiella furvella'' *''Lambiella fuscosora'' *''Lambiella globulosa'' – Europe *''Lambiella gyrizans'' *''Lambiella hepaticicola'' – Australia *''Lambiella impavida'' *''Lambiella insularis'' *''Lambiella isidiata'' – Venezuela *''Lambiella mullensis'' *'' Lambiella psephota'' *''Lambiella sphacelata'' *''Lambiella subpsephota'' – Falkland Islands The Falkland Islands (; es, Islas Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatty Acid
In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, from 4 to 28. Fatty acids are a major component of the lipids (up to 70% by weight) in some species such as microalgae but in some other organisms are not found in their standalone form, but instead exist as three main classes of esters: triglycerides, phospholipids, and cholesteryl esters. In any of these forms, fatty acids are both important dietary sources of fuel for animals and important structural components for cells. History The concept of fatty acid (''acide gras'') was introduced in 1813 by Michel Eugène Chevreul, though he initially used some variant terms: ''graisse acide'' and ''acide huileux'' ("acid fat" and "oily acid"). Types of fatty acids Fatty acids are classified in many ways: by length, by saturation vs unsaturati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xylographaceae
''Xylographaceae'' is a family of lichen-forming fungi in the order Baeomycetales. It contains four genera and 25 species. Taxonomy The family was circumscribed in 1888 by American lichenologist Edward Tuckerman (as "Xylographei"). His concept of the family included only ''Agyrium'', and the type genus, '' Xylographa''. In 1929, British lichenologist Walter Watson published a system of lichen classification and included the genera '' Lithographa'', '' Ptychographa'', and '' Encephalographa'' in the Xylographaceae, leaving out ''Agyrium''. After that, the family was rarely used until it was resurrected in 2015 following molecular phylogenetic analysis of trapelioid fungi in the subclass Ostropomycetidae. In this analysis, it was determined that trapelioid taxa fall into two major phylogenetic groups; the first group – containing the genera ''Rimularia'', ''Placynthiella'', ''Trapeliopsis'', ''Trapelia'', and ''Placopsis'' – are part of the family Trapeliaceae. The remaining t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
