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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.
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.
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]
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 ...
Lichen. Lichenology is the branch of mycology that studies the lichens, symbiotic organisms made up of an intimate symbiotic association of a microscopic alga (or a cyanobacterium) with a filamentous fungus. Lichens are chiefly characterized by this symbiosis.
Almost half of all members of the phylum Ascomycota form symbiotic associations with algae to form lichens. Others, such as morels (a highly prized edible fungi), form important mycorrhizal relationships with plants, thereby providing enhanced water and nutrient uptake and, in some cases, protection from insects.
Recent work suggests that non-photosynthetic bacterial microbiomes associated with lichens may also have functional significance to lichens. [10] Most mycobiont partners derive from the ascomycetes, and the largest class of lichenized fungi is Lecanoromycetes. [11] The vast majority of lichens derive photobionts from Chlorophyta (green algae). [9]
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. ...