Pycnidium
{{Short description|Fungal spore-bearing structure}}
File:Phoma-Coelomycetes Pycnidia.jpg
A pycnidium (plural pycnidia) is an asexual fruiting body produced by mitosporic fungi, for instance in the order Sphaeropsidales (Deuteromycota, Coelomycetes) or order Pleosporales (Ascomycota, Dothideomycetes). It is often spherical or inversely pearshaped (obpyriform) and its internal cavity is lined with conidiophores. When ripe, an opening generally appears at the top, through which the pycnidiospores escape.{{cite journal|last1=Punithalingam|first1=E.|title=Development of the pycnidium in Septoria|journal=Transactions of the British Mycological Society|volume=49|issue=1|year=1966|pages=19–25|issn=0007-1536|doi=10.1016/S0007-1536(66)80030-X}}{{cite journal|last1=Roger|first1=C.|last2=Tivoli|first2=B.|title=Spatio-temporal development of pycnidia and perithecia and dissemination of spores of Mycosphaerella pinodes on pea (Pisum sativum)|journal=Plant Pathology|volume=45|issue=3|year=1996|pages=518–528|issn=0032-0862|doi=10.1046/j.1365-3059.1996.d01-139.x}}{{Cite journal|last1=Ariyawansa|first1=Hiran A.|last2=Phillips|first2=Alan J.L.|last3=Chuang|first3=Wei-Yu|last4=Tsai|first4=Ichen|date=2018-07-26|title=Tzeananiaceae, a new pleosporalean family associated with Ophiocordyceps macroacicularis fruiting bodies in Taiwan|journal=MycoKeys|issue=37 |pages=1–17|doi=10.3897/mycokeys.37.27265|issn=1314-4049|pmc=6072833|pmid=30100794 |doi-access=free }}
References
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Further reading
- Kulik, Martin M. "Symptomless infection, persistence, and production of pycnidia in host and non-host plants by Phomopsis batatae, Phomopsis phaseoli, and Phomopsis sojae, and the taxonomic implications." Mycologia(1984): 274–291.
- Calpouzos, L., and D. B. Lapis. "Effects of light on pycnidium formation, sporulation, and tropism by Septoria nodorum." Phytopathology 60.5 (1970): 791–794.