Biology:Ostropomyces
| Ostropomyces | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Ostropales |
| Family: | Stictidaceae |
| Genus: | Ostropomyces Thiyagaraja, Lücking, Ertz & K.D.Hyde (2021) |
| Type species | |
| Ostropomyces pruinosellus Thiyagaraja, Lücking, Ertz & K.D.Hyde (2021)
| |
| Species | |
|
O. pruinosellus | |
Ostropomyces is a genus of fungi in the family Stictidaceae. It has two species,[1] both of which are found in tropical forests in northern Thailand, where they grow as saprotrophs on bark.
Taxonomy
The genus was circumscribed in 2021 by Vinodhini Thiyagaraja, Robert Lücking, Damien Ertz, and Kevin Hyde, with O. pruinosellus assigned as the type species. Ostropomyces is named for its similarity to genus Ostropa.[2]
Molecular phylogenetic analysis shows that Ostropomyces and Ostropa are closely related, but the former differs from the latter in the presence of [[Glossary of lichen terms#{{biology:{1}}}|perithecial]] ascomata, the presence of [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] on the inner wall, the lack of an [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] in the ascus, and four-spored asci. In contrast, Ostropa has circular ascomata opening by a transverse slit, periphysoids in the above part, a prominent apical cap in the ascus, and eight-spored or polysporous asci.[2]
Description
Ostropomyces have a whitish, pruinose thallus. The sexual morph of this genus includes perithecial ascomata that are typically solitary and either immersed or [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], with a distinct ostiole. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] has a clear border between the outer and inner layer, while the [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] comprises filamentous [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] that are [[Glossary of lichen terms#{{biology:{1}}}|septate]], branched, hyaline, and filamentous. The asci are cylindrical and [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], while the [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] are overlapping and [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], with a hyaline, transversely multi-septate structure. The cells of the ascospores are almost of equal size and deeply constricted at the septa of each cell, which allows them to easily break into small septate part-spores.[2]
In its asexual morph, Ostropomyces develops erumpent, spherical [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] with a wall that shows two distinct layers in transverse section. The outer layer is hyaline and densely packed, while the inner layer is hyaline, loosely packed, and elongate in the pycnidial neck. Conidiophores line the inside and outside of the pycnidia wall, while the conidiogenous cells are hyaline. The conidia are similar in shape to the ascospores, being [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], aseptate, hyaline, and [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] at maturity.[2]
References
- ↑ Wijayawardene, N.N.; Hyde, K.D.; Dai, D.Q.; Sánchez-García, M.; Goto, B.T.; Saxena, R.K. et al. (2022). "Outline of Fungi and fungus-like taxa – 2021". Mycosphere 13 (1): 53–453 [163]. doi:10.5943/mycosphere/13/1/2. https://www.researchgate.net/publication/358798332.
- ↑ 2.0 2.1 2.2 2.3 Thiyagaraja, Vinodhini; Lücking, Robert; Ertz, Damien; Karunarathna, Samantha C.; Wanasinghe, Dhanushka N.; Lumyong, Saisamorn; Hyde, Kevin D. (2021). "The evolution of life modes in Stictidaceae, with three novel taxa". Journal of Fungi 7 (2): 105. doi:10.3390/jof7020105. PMID 33540644.
Wikidata ☰ Q117289800 entry
 |  |
