Lepteutypa

Lepteutypa is a genus of plant pathogens in the family Amphisphaeriaceae. First described by the Austrian mycologist Franz Petrak in 1923,[1] the genus contains 10 species according to a 2008 estimate.[2]

Lepteutypa
Asexual fructifications of Cypress canker disease
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Ascomycetes
Order:
Xylariales
Family:
Amphisphaeriaceae
Genus:
Lepteutypa

Petr. (1923)
Type species
Lepteutypa fuckelii
(Nitschke) Petr. (1923)
Species

L. cupressi
L. fuckelii
L. hippophaës
L. podocarpi

The genus Lepteutypa is teleomorphic (reproducing sexually) and the corresponding anamorphic name, used to describe the asexual form, is Seiridium (formerly Coryneum). For instance, the name Seiridium cupressi can still be used for the anamorphic form of that species, but now that it is known that a sexual stage exists, the name Lepteutypa cupressi should be preferred for the species as a whole. On the other hand, no sexual stage of species Seiridium cardinale is known, so that is its only name.[3]

Seiridium cardinale and L. cupressi are important to gardeners and foresters as they cause the devastating Cyprus canker disease of Cupressus, Thuja, and related conifers in Northern Europe, America, Australia[4] and New Zealand.[5][6] S. cardinale is from California and was introduced to Europe around the 1930s, probably from infected nursery stock. A separate introduction affected the southern hemisphere.[7][8]

References
  1. Petrak F. (1923). "Mykologische Notizen. VI". Annales Mycologici (in German). 21 (3–4): 182–335.
  2. Kirk PM, Cannon PF, Minter DW, Stalpers JA (2008). Dictionary of the Fungi (10th ed.). Wallingford: CABI. p. 371. ISBN 978-0-85199-826-8.
  3. For the species correspondence, see the record of Index Fungorum and for instance this EPPO abstract.
  4. "TREETEC | Cypress Canker | Conifer dieback | Seiridium sp | Fungal disease in cypress trees".
  5. Graniti A. (1998). "CYPRESS CANKER: A Pandemic in Progress". Annual Review of Phytopathology. 36: 91–114. doi:10.1146/annurev.phyto.36.1.91. PMID 15012494.
  6. See this New Zealand Farm Forestry site.
  7. Della Rocca G, Eyre CA, Danti R, Garbelotto M (2011). "Sequence and SSR analyses of the fungal pathogen Seiridium cardinale indicate California is the most likely source of the Cypress canker epidemic for the Mediterranean region". Phytopathology. 101 (12): 1408–1417. doi:10.1094/PHYTO-05-11-0144. PMID 21879790.
  8. "Tree-Killing Pathogen Traced Back to California". ScienceDaily. Sep 1, 2011.


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