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A lichen (/ ˈ l aɪ k ən / LIE-kən, UK also / ˈ l ɪ tʃ ən / LI-chən) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungi species, along with yeasts and bacteria [1] [2] embedded in the cortex or "skin", in a mutualistic relationship.
Lichen products are chemical compounds produced by lichens. Pages in category "Lichen products" The following 44 pages are in this category, out of 44 total. ...
Symbiosis in lichens is the mutually beneficial symbiotic relationship of green algae and/or blue-green algae (cyanobacteria) living among filaments of a fungus, forming lichen. [ 1 ] [ 2 ] [ 3 ] Living as a symbiont in a lichen appears to be a successful way for a fungus to derive essential nutrients, as about 20% of all fungal species have ...
Lichens are composed of at least two organisms, a fungus and an alga or sometimes cyanobacteria (a type of photosynthetic bacteria) and sometimes other bacteria, fungi, or algae.
The photobiont partner is chlorococcoid (i.e., green algae from the family Chlorococcaceae). Various lichen products have been reported in the family, including depsides, depsidones, and derivatives of pulvinic acid. Most Acarosporaceae species grow on land or on rock. [7]
Usnea filipendula – one of about 20,000 described species of lichen. The following outline provides an overview of and topical guide to lichens.. Lichen – composite organism made up of multiple species – a fungal partner, one or more photosynthetic partners, which can be either green algae or cyanobacteria, and, in at least 52 genera of lichens, a yeast. [1]
In a lichen, the host is compared to a "macho fungus"; in mycophycobiosis, the host is "the algae that wears the panties". [4] According to Hawksworth [2] the physiology of this symbiosis could well be comparable to that of lichens, but it remains to be better explored. Unlike lichens, mycophycobioses look like an algal partner, which remains ...
Some lichens contain both green algae and cyanobacteria apart from the fungal component, in which case they are called "tripartite". Normally the photobiont occupies an extensive layer covering much of the thallus, but in tripartite lichens, the cyanobacterium component may be enclosed in pustule-like outgrowths of the main thallus called ...
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