Seiridium

{{Short description|Genus of fungi}}

{{Taxobox

| image = Seiridium canker 100814w.JPG

| image_width = 240px

| image_caption = Asexual fructifications of Cypress canker disease

| regnum = Fungi

| divisio = Ascomycota

| classis = Sordariomycetes

| ordo = Amphisphaeriales

| familia = Sporocadaceae

| genus = Seiridium

| genus_authority = Petr. (1817)

| type_species = Seiridium marginatum

| type_species_authority = Nees (1816)

| subdivision_ranks = Species

| subdivision =

}}

Seiridium is a genus of plant pathogens in the family Sporocadaceae.{{cite journal |display-authors=6 |last1=Wijayawardene |first1=Nalin |last2=Hyde |first2=Kevin |first3=Laith Khalil Tawfeeq |last3=Al-Ani |last4=Somayeh |first4=Dolatabadi |last5=Stadler |first5=Marc |last6=Haelewaters |first6=Danny |last7=Tsurykau |first7=Andrei |last8=Mesic |first8=Armin |last9=Navathe |first9=Sudhir |last10=Papp |first10=Viktor |last11=Oliveira Fiuza |first11=Patrícia |last12=Vázquez |first12=Víctor |last13=Gautam |first13=Ajay |last14=Becerra |first14=Alejandra G. |last15=Ekanayaka |first15=Anusha |last16=K. C. |first16=Rajeshkumar |last17=Bezerra |first17=Jadson |last18=Matočec |first18=Neven |last19=Maharachchikumbura |first19=Sajeewa |last20=Suetrong |first20=Satinee |year=2020 |title=Outline of Fungi and fungus-like taxa |journal=Mycosphere |volume=11 |pages=1060–1456 |doi=10.5943/mycosphere/11/1/8 |doi-access=free|hdl=11336/151990 |hdl-access=free }}

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 is 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. On the other hand, no sexual stage of species Seiridium cardinale is known, so that is its only name.{{cite journal |last1=Graniti |first1=A. |title=Seiridium cardinale and other cypress cankers |journal=EPPO Conference on Pest and Disease Problems in European Forests |date=September 1986 |volume=16 |issue=3 |pages=479–486 |doi=10.1111/j.1365-2338.1986.tb00309.x}}{{cite journal |last1=Tsopelas |first1=P. |last2=Angelopoulos |first2=A. |last3=Nikolaou |first3=K. |title=Seiridium cardinale is a new threat to cypress trees in Cyprus |journal=Plant Pathology |date=August 2008 |volume=57 |issue=4 |pages=784-784 |doi=10.1111/j.1365-3059.2007.01812.x}}

Seiridium cardinale is important to gardeners and foresters as they cause the devastating Cypress canker disease on Cupressus, Thuja, and related conifers in Northern Europe, America, Australia,{{Cite web | url=http://www.treetec.net.au/cypress-canker-removal.php | title=TREETEC | Cypress Canker | Conifer dieback | Seiridium sp | Fungal disease in cypress trees}} and New Zealand.{{cite journal |author=Graniti A. |year=1998 |title=CYPRESS CANKER: A Pandemic in Progress |journal=Annual Review of Phytopathology |volume=36 |pages=91–114 |pmid=15012494 |doi=10.1146/annurev.phyto.36.1.91}}See [http://www.nzffa.org.nz/farm-forestry-model/the-essentials/forest-health-pests-and-diseases/diseases/Cypress-canker/Cypress-cankerPath08 this New Zealand Farm Forestry site]. Seiridium cardinale is from California and was introduced to Europe around the 1930s, probably from infected nursery stock. A separate introduction affected the southern hemisphere.{{Cite journal |title=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 |year=2011 |vauthors=Della Rocca G, Eyre CA, Danti R, Garbelotto M |journal=Phytopathology |volume=101 |issue=12 |pages= 1408–1417|doi=10.1094/PHYTO-05-11-0144|pmid=21879790 |doi-access= }}