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Diorygma Salazinicum .
''Diorygma salazinicum'' is a rare species of lichen in the family Graphidaceae. Found in Thailand, it was formally described as a new species in 2014 by Jutarat Sutjaritturakan and Klaus Kalb. The type specimen was collected in Tambon Wangmai ( Thai Mueang District), where it was found growing on the bark of an unidentified deciduous tree. The lichen is only known from the type locality. The specific epithet refers to the presence of salazinic acid, a secondary chemical. Other compounds occurring in the lichen are stictic acid, minor amounts of cryptostictic acid and peristictic acid, as well as trace amounts of norstictic acid Norstictic acid is a depsidone produced as a secondary metabolites in lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaus Kalb
Klaus Kalb (born 1942) is a German lichenologist and an authority on tropical lichens. Biography Klaus Kalb was born in Nuremberg in 1942 and grew up in southern Bavaria. From 1960 to 1965 he studied biology, chemistry, and geography at the University of Erlangen–Nuremberg. Kalb was greatly interested in lichens and decided to pursue a doctoral degree; his thesis work was about lichen communities in the Ötztal Alps. From 1978–1981 he was a teacher at the Colégio Visconde de Porto Seguro in São Paulo, Brazil. This position afforded him the opportunity to initiate research into tropical lichens. Kalb earned his habilitation from the University of Regensburg in 1989, becoming an associate professor with that institution. In 2014, the University of Wisconsin herbarium purchased Kalb's lichen collection of 60,000 specimens for $75,000. With the acquisition of Kalb's collection, rich in tropical and European specimens, the herbarium houses about 70% of the world's know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Metabolite
Secondary metabolites, also called specialised metabolites, toxins, secondary products, or natural products, are organic compounds produced by any lifeform, e.g. bacteria, fungi, animals, or plants, which are not directly involved in the normal growth, development, or reproduction of the organism. Instead, they generally mediate ecological interactions, which may produce a selective advantage for the organism by increasing its survivability or fecundity. Specific secondary metabolites are often restricted to a narrow set of species within a phylogenetic group. Secondary metabolites often play an important role in plant defense against herbivory and other interspecies defenses. Humans use secondary metabolites as medicines, flavourings, pigments, and recreational drugs. The term secondary metabolite was first coined by Albrecht Kossel, a 1910 Nobel Prize laureate for medicine and physiology in 1910. 30 years later a Polish botanist Friedrich Czapek described secondary metabolit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Described In 2014
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 ( |
Diorygma
''Diorygma'' is a genus of lichen-forming fungi in the family Graphidaceae. The genus was circumscription (taxonomy), circumscribed by Franz Gerhard Eschweiler in 1824. Species of the genus are widely distributed in tropical and subtropical regions of the world. Species , Species Fungorum accepts 76 species of ''Diorygma''. *''Diorygma aeolum'' *''Diorygma africanum'' *''Diorygma agumbense'' – India *''Diorygma alagoense'' – Brazil *''Diorygma albocinerascens'' – India *''Diorygma albovirescens'' – India *''Diorygma angusticarpum'' – Thailand *''Diorygma antillarum'' *''Diorygma archeri'' – Vietnam *''Diorygma australasicum'' *''Diorygma basinigrum'' *''Diorygma cameroonense'' – Africa *''Diorygma chumphonense'' – Thailand *''Diorygma circumfusum'' *''Diorygma citri'' – Thailand *''Diorygma confluens'' *''Diorygma conprotocetraricum'' – Thailand *''Diorygma dandeliense'' – India *''Diorygma dealbatum'' – India *''Diorygma epiglaucum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norstictic Acid
Norstictic acid is a depsidone produced as a secondary metabolites in lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Lactones Phenols Lichen products Heterocyclic compounds with 4 rings {{lichen-stub ... [...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] |
Salazinic Acid
Salazinic acid is a depsidone with a lactone ring. It is found in some lichens, and is especially prevalent in ''Parmotrema'' and ''Bulbothrix'', where its presence or absence is often used to help classify species in those genera. History In 1897, Friedrich Wilhelm Zopf named the chemical he originally isolated from the African species '' Stereocaulon salazinum'' as salazinic acid. Later studies showed that the compound he named was actually norstictic acid. In 1933, Yasuhiko Asahina and J. Asano studied salazinic acid they had isolated from '' Parmelia cetrata'', and found a unique ring system with seven members containing two phenolic components. The fundamental structure was named depsidone, that is, a seven-membered ring with an oxygen bridge binding two aromatic rings. Japanese chemists demonstrated in the late 1960s that the isolated mycobiont of the lichen '' Ramalina crassa'' could produce salazinic acid when grown in laboratory culture. Subsequent studies tried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen
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 ( |
Botanical Name
A botanical name is a formal scientific name conforming to the '' International Code of Nomenclature for algae, fungi, and plants'' (ICN) and, if it concerns a plant cultigen, the additional cultivar or Group epithets must conform to the ''International Code of Nomenclature for Cultivated Plants'' (ICNCP). The code of nomenclature covers "all organisms traditionally treated as algae, fungi, or plants, whether fossil or non-fossil, including blue-green algae ( Cyanobacteria), chytrids, oomycetes, slime moulds and photosynthetic protists with their taxonomically related non-photosynthetic groups (but excluding Microsporidia)." The purpose of a formal name is to have a single name that is accepted and used worldwide for a particular plant or plant group. For example, the botanical name ''Bellis perennis'' denotes a plant species which is native to most of the countries of Europe and the Middle East, where it has accumulated various names in many languages. Later, the plant was intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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