''Cordyceps'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

ascomycete Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The defi ...

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

(sac fungi) that includes about 600 species. Most ''Cordyceps'' species are

endoparasitoids In evolutionary ecology, a parasitoid is an organism that lives in close association with its host at the host's expense, eventually resulting in the death of the host. Parasitoidism is one of six major evolutionary strategies within parasiti ...

, parasitic mainly on

insects Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of j ...

and other

arthropod Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...

s (they are thus

entomopathogenic fungi An entomopathogenic fungus is a fungus that can kill or seriously disable insects. Typical life cycle These fungi usually attach to the external body surface of insects in the form of microscopic spores (usually asexual, mitosporic spores also ...

); a few are parasitic on other fungi. The generic name ''Cordyceps'' is derived from the

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

word κορδύλη ''kordýlē'', meaning "club", and the

word κεφαλή ''cephali'', meaning "head". The

has a worldwide distribution and most of the approximately 600 species that have been described are from Asia (notably

Nepal Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is mai ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainous ...

Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

, and

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...

). ''Cordyceps'' species are particularly abundant and diverse in humid temperate and tropical jungles.

Subtaxa

There are two recognized subgenera: *''Cordyceps'' subgen. ''Cordyceps'' Fr. 1818 *''Cordyceps'' subgen. ''Cordylia'' Tul. & C. Tul. 1865 ''Cordyceps'' subgen. ''Epichloe'' was at one time a subgenus, but is now regarded as a separate genus, ''

Epichloë ''Epichloë'' is a genus of ascomycete fungi forming an endophytic symbiosis with grasses. Grass choke disease is a symptom in grasses induced by some ''Epichloë'' species, which form spore-bearing mats ( stromata) on tillers and suppress t ...

''. ''C. sinensis'' was shown in 2007 by

nuclear DNA Nuclear DNA (nDNA), or nuclear deoxyribonucleic acid, is the DNA contained within each cell nucleus of a eukaryotic organism. It encodes for the majority of the genome in eukaryotes, with mitochondrial DNA and plastid DNA coding for the rest. It ...

sampling to be unrelated to most of the rest of the members of the genus, and as a result it was renamed ''

Ophiocordyceps sinensis ''Ophiocordyceps sinensis'' (formerly known as ''Cordyceps sinensis''), known colloquially as caterpillar fungus, is an entomopathogenic fungus (a fungus that grows on insects) in the family Ophiocordycipitaceae. It is mainly found in the mead ...

'' and placed in a new family, the

Ophiocordycipitaceae Ophiocordycipitaceae is a family of parasitic fungi in the Ascomycota, class Sordariomycetes. Genera *'' Blistum'' *'' Didymobotryopsis'' *'' Haptocillium'' *'' Harposporium'' (Anamorphic) *'' Ophiocordyceps''; anamorphic genera: **''Hirsutella ...

, as was "'' Cordyceps unilateralis''". ''Cordyceps'' and ''

Metacordyceps ''Metacordyceps'' is a genus of fungi in the family Clavicipitaceae. The anamorph In mycology, the terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota: *Teleom ...

'' spp. are now thought to be the

teleomorph In mycology, the terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota: *Teleomorph: the sexual reproductive stage (morph), typically a fruiting body. *Anamorph: an ase ...

s of a number of

anamorphic Anamorphic format is the cinematography technique of shooting a widescreen picture on standard 35 mm film or other visual recording media with a non-widescreen native aspect ratio. It also refers to the projection format in which a distorted ...

entomopathogenic fungus An entomopathogenic fungus is a fungus that can kill or seriously disable insects. Typical life cycle These fungi usually attach to the external body surface of insects in the form of microscopic spores (usually asexual, mitosporic spores also ...

"genera" such as: ''

Beauveria ''Beauveria'' is a genus of asexually-reproducing fungi allied with the ascomycete family Cordycipitaceae. Its several species are typically insect pathogens. The sexual states (teleomorphs) of ''Beauveria'' species, where known, are species o ...

'' ('' Cordyceps bassiana''), ''

Lecanicillium ''Lecanicillium'' is a genus of fungi in the order Hypocreales and is described as anamorphic Cordycipitaceae; 21 species are currently described. Some of these entomopathogenic fungus species were previously widely known as ''Verticillium leca ...

Metarhizium ''Metarhizium'' is a genus of entomopathogenic fungi in the Clavicipitaceae family. With the advent of genetic profiling, placing these fungi in proper taxa has now become possible. Most turn out to be the asexual forms (anamorphs) of fungi in ...

'' and ''Nomuraea''.

Biology

When a ''Cordyceps'' fungus attacks a host, the

mycelium Mycelium (plural mycelia) is a root-like structure of a fungus consisting of a mass of branching, thread-like hyphae. Fungal colonies composed of mycelium are found in and on soil and many other substrate (biology), substrates. A typical single ...

invades and eventually replaces the host tissue, while the elongated fruit body (

ascocarp An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascocarps are m ...

) may be cylindrical, branched, or of complex shape. The ascocarp bears many small, flask-shaped

perithecia An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascocarps are mos ...

containing asci. These, in turn, contain thread-like ascospores, which usually break into fragments and are presumably infective.

Research

Polysaccharide Polysaccharides (), or polycarbohydrates, are the most abundant carbohydrates found in food. They are long chain polymeric carbohydrates composed of monosaccharide units bound together by glycosidic linkages. This carbohydrate can react with wa ...

components and

cordycepin Cordycepin, or 3'-deoxyadenosine, is a derivative of the nucleoside adenosine, differing from the latter by the replacement of the hydroxy group in the 3' position with a hydrogen. It was initially extracted from the fungus '' Cordyceps militari ...

are under

basic research Basic research, also called pure research or fundamental research, is a type of scientific research with the aim of improving scientific theories for better understanding and prediction of natural or other phenomena. In contrast, applied resear ...

and have been isolated from '' C. militaris''.

Sources and uses

Cordyceps are used in

traditional Chinese medicine Traditional Chinese medicine (TCM) is an alternative medical practice drawn from traditional medicine in China. It has been described as "fraught with pseudoscience", with the majority of its treatments having no logical mechanism of action ...

, but there is currently no

scientific evidence Scientific evidence is evidence that serves to either support or counter a scientific theory or hypothesis, although scientists also use evidence in other ways, such as when applying theories to practical problems. "Discussions about empirical ev ...

that their use has any clinical effect on human diseases.

In popular culture

The ''Cordyceps'' fungus is depicted as a core plot element in the video games ''

The Last of Us ''The Last of Us'' is a 2013 action-adventure game developed by Naughty Dog and published by Sony Computer Entertainment. Players control Joel, a smuggler tasked with escorting a teenage girl, Ellie, across a post-apocalyptic United States. ' ...

'' (2013), '' The Last of Us: Left Behind'' (2014), and ''

The Last of Us Part II ''The Last of Us Part II'' is a 2020 action-adventure game developed by Naughty Dog and published by Sony Interactive Entertainment for the PlayStation 4. Set five years after ''The Last of Us'' (2013), the game focuses on two playable chara ...

'' (2020), in which a mutated form of the fungus infects humans and causes the collapse of civilization. In the video game '' Bug Fables: The Everlasting Sapling'', ''Cordyceps'' infected bugs are enemies that can be encountered. ''Cordyceps'' also serve as a major plot point in the story. In the novel ''

The Girl with All the Gifts ''The Girl with All the Gifts'' is a science-fiction novel by M. R. Carey, published in June 2014 by Orbit Books. It is based on his 2013 Edgar Award-nominated short story ''Iphigenia In Aulis'' and was written concurrently with the screenplay ...

'' (2014) and its film adaptation (2016), a mutation of ''Ophiocordyceps unilateralis'' is responsible for an infection which infects humans and causes the collapse of civilization.

Gallery

File:Cordyceps.jpg, ''Cordyceps'' beginning its growth from a wasp File:Cordycepsmilitaris.jpg, ''Cordyceps militaris'' File:Puppenkernkeule.jpg, ''Cordyceps militaris'' File:Cordyceps ophioglossoides 02.JPG, '' Cordyceps ophioglossoides''

References

{{Taxonbar, from=Q312238 Edible fungi Parasitic fungi Sordariomycetes genera Taxa named by Elias Magnus Fries Taxa described in 1818