2024-03-29T14:56:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1176332019-08-06T10:07:35Zcom_10261_77com_10261_8col_10261_330
2015-07-07T07:57:13Z
urn:hdl:10261/117633
Austrostigmidium, a new austral genus of lichenicolous fungi close to rock-inhabiting meristematic fungi in Teratosphaeriaceae fungi close to rock-inhabiting meristematic fungi in Teratosphaeriaceae
Pérez-Ortega, Sergio
Garrido-Benavent, Isaac
Ríos, Asunción de los
Antarctica
Capnodiales
Dothideomycetes
Lichen
Lifestyle switch
Phylogenetic analysis
Symbiosis
Ultrastructure
Accepted for publication: 19 December 2014
The new genus of lichenicolous fungi Austrostigmidium is described from Antarctica and Tierra del Fuego (Chile). It is characterized by the presence of black pseudothecia, pseudoparaphyses, fissitunicate, I-,KI asci and 3-septate hyaline ascospores. So far, the only known species grows on Mastodia tessellata (Verrucariales, Eurotiomycetes). The new genus is compared with anatomically close genera. Based on nuLSU and nuSSU markers we inferred its phylogenetic relationships and found that it belongs to the family
Teratosphaeriaceae (Capnodiales, Dothideomycetes) and is closely related to rock-inhabiting fungal species, as well as to the hyphomycetous lichenicolous fungus
Xanthoriicola. Finally, the host-parasite
interface has been analyzed by means of transmission electron microscopy and fluorescence microscopy in order to describe the interactions among the new fungus and the symbionts forming the host lichen.
2015-07-07T07:57:13Z
2015-07-07T07:57:13Z
2015-05
artículo
Lichenologist 47(3): 143-156 (2015)
0024-2829
http://hdl.handle.net/10261/117633
10.1017/S0024282915000031
1096-1135
eng
http://dx.doi.org/10.1017/S0024282915000031
Sí
CTM2012-38222-C02-02
FPU AP2012-3556
closedAccess
Cambridge University Press
British Lichen Society