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| Identifiers | |
|---|---|
3D model (JSmol) | |
| ChEBI | |
PubChem CID | |
CompTox Dashboard (EPA) | |
| |
| |
| Properties | |
| C24H30O8 | |
| Molar mass | 446.496 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Merochlorophaeic acid is a depside with the molecular formula C24H30O8 which has been isolated from the lichen Cladonia merochlorophaea . [1] [2] [3] [4]
Lichenology is the branch of mycology that studies the lichens, symbiotic organisms made up of an intimate symbiotic association of a microscopic alga with a filamentous fungus. Lichens are chiefly characterized by this symbiosis.
Vernon Ahmadjian was a distinguished professor at Clark University in Worcester, Massachusetts. He specialized in the symbiosis of lichens, and wrote several books and numerous publications on the subject.
Red rot is a degradation process found in vegetable-tanned leather.
A depside is a type of polyphenolic compound composed of two or more monocyclic aromatic units linked by an ester group. Depsides are most often found in lichens, but have also been isolated from higher plants, including species of the Ericaceae, Lamiaceae, Papaveraceae and Myrtaceae.
David Leslie Hawksworth is a British mycologist and lichenologist currently with a professorship in the Universidad Complutense de Madrid in Madrid, Spain and also a Scientific Associate of The Natural History Museum in London. Hawksworth has had a prolific career, authoring nearly 600 scientific works, describing approximately 250 new taxa, and proposing around 500 new combinations or new names in fungal nomenclature. In 1996, he was honoured as Commander of the British Empire (CBE). In 2002, he received the Acharius Medal from the International Association for Lichenology. Five genera and many species have been named in his honour.
A spot test in lichenology is a spot analysis used to help identify lichens. It is performed by placing a drop of a chemical reagent on different parts of the lichen and noting the colour change associated with application of the chemical. The tests are routinely encountered in dichotomous keys for lichen species, and they take advantage of the wide array of lichen products produced by lichens and their uniqueness among taxa. As such, spot tests reveal the presence or absence of chemicals in various parts of a lichen. They were first proposed as a method to help identify species by the Finnish lichenologist William Nylander in 1866.
The International Association for Lichenology (IAL) is an organisation that encourages the understanding of lichens and lichenology, and promotes their study and conservation worldwide. It unites lichenologists across the globe, as well as national and regional organisations into one group. It is affiliated to the International Union of Biological Sciences (IUBS).
Margalith Galun was an Israeli lichenologist. She was a member of the Israel Academy of Sciences and Humanities and established the Israeli collection of lichens at Tel Aviv University. Founder of the academic journal Symbiosis, she served as its editor-in-chief between 1985 and 2006. In 1994, she was awarded the Acharius Medal and in 1996 won the Meitner-Humboldt Prize, for her contributions to the field. The International Association for Lichenology grants an award which bears her name to honor scholarship at their quadrennial symposium.
Lecanoric acid is a chemical produced by several species of lichen. Lecanoric acid is classified as a polyphenol and a didepside, and it functions as an antioxidant. It is an ester of orsellinic acid with itself.
Umbilicaric acid is an organic polyphenolic carboxylic acid made by several species of lichen. It is named after Umbilicaria. Umbilicaric acid is a tridepside, containing three phenol rings in orsellinic acid moieties.
Dharani Dhar Awasthi was an Indian botanist, taxonomist, and lichenologist, often given the appellation "Father of Indian Lichenology".
Peter Wilfred James (1930–2014) was an English botanist and lichenologist. He was a pioneer in the study of lichens as environmental indicators, especially of atmospheric pollution.
Evernic acid is an organic compound and depside with the molecular formula C17H16O7. Evernic acid was first isolated from the lichen Usnea longissima. Evernic acid is soluble in hot alcohol and poorly soluble in water. Evernic acid is produced by the lichens Ramalina, Evernia, and Hypogymnia.
Elisabeth Peveling was a German botanist. Her scientific research was largely specialized in the cytology and ultrastructure of lichens.
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.
Thamnolic acid is a β-orcinol depside with the molecular formula C19H16O11. Thamnolic acid was first isolated from the lichen Thamnolia vermicularis, but it also occur in Cladonia species.
Siegfried Huneck was a German chemist and lichenologist. Much of his scientific career was hampered by the political situation in the former German Democratic Republic. He rejected pursuing a career in academia, and instead ended up working at the Leibniz Institute of Plant Biochemistry, a public research institute, from 1969 until his retirement in 1993. Despite his relative isolation and restricted freedoms in East Germany, Huneck had numerous professional contacts both in Germany and abroad, and was a highly published scholar. Many of his more than 400 scientific publications dealt with the chemistry of lichen products. He was awarded the Acharius Medal for lifetime achievements in lichenology in 1996.
Solorinic acid is an anthraquinone pigment found in the leafy lichen Solorina crocea. It is responsible for the strong orange colour of the medulla and the underside of the thallus in that species. In its purified crystalline form, it exists as orange-red crystals with a melting point of 201 °C (394 °F).
Christian Leuckert was a lichen taxonomist who applied the diversity of secondary metabolites within lichens as useful taxonomic criteria. He was Director of the Institute of Plant Systematics and Plant Geography at the Free University of Berlin from the 1970s until 1995.
Grayanic acid is an organic compound found in certain lichens, particularly Cladonia grayi, where it serves as a secondary metabolite with notable taxonomic importance. Identified in the 1930s, it is now recognised as a chemotaxonomic marker that helps distinguish closely related species within the Cladonia chlorophaea species group. Grayanic acid crystallises as colourless, needle-like structures, melts at approximately 186–189 °C (367–372 °F), and displays distinctive fluorescence under ultraviolet light, aiding in its detection and study.
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