Fungalpedia – Note 491, Diederichomyces 

 

Diederichomyces Crous & Trakun.

Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Lichenicolous fungi.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 

Classification: Phaeosphaeriaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi.

De Gruyter et al. (2009, 2013) stated that all Phoma sensu stricto was placed on Didymellaceae. Lawrey et al. (2012) placed all lichenicolous Phoma species in the Phaeosphaeriaceae (Pleosporales). Trakunyingcharoen et al. (2014) introduced Diederichomyces to accommodate most of the lichenicolous Phoma on the basis of having dimorphic conidia, and orange crystals in culture and Diederichomyces recovered as polyphyletic clade in the LSU phylogeny. Ertz et al. (2015) synonymized Diederichomyces under Didymocyrtis along with Diederichia. Diederichomyces clustered together with lichenicolous Phoma species in the phylogenetic analysis, and the oldest name, Didymocyrtis, was further accepted.  

Type species: Diederichomyces xanthomendozae (Diederich & Freebury) Crous & Trakun. 

Other accepted species: Species Fungorum – search Diederichomyces

 

Figure 1 – Diederichomyces species. a Ascoma of D. cladoniicola. b, c Conidiogenous cells with conidia (b= D. caloplacae, c= D. cladoniicola). d Conidia of D. caloplacae. Scale bars: a = 300 μm, b-d = 10 μm. Redrawn from Trakunyingcharoen et al. (2014).

 

References 

de Gruyter J, Aveskamp MM, Woudenberg JHC, Verkley GJM. et al. 2009 – Molecular phylogeny of Phoma and allied anamorph genera: towards a reclassification of the Phoma complex. Mycological Research 113, 508–519

de Gruyter J, Woudenberg JHC, Aveskamp MM, Verkley GJM. et al. 2013 – Redisposition of Phoma-like anamorphs in Pleosporales. Studies in Mycology 75, 1–36. 

Ertz D, Diederich P, Lawrey JD, Berger F. et al. 2015 – Phylogenetic insights resolve Dacampiaceae (Pleosporales) as polyphyletic: Didymocyrtis (Pleosporales, Phaeosphaeriaceae) with Phoma-like anamorphs resurrected and segregated from Polycoccum (Trypetheliales, Polycoccaceae fam. nov.). Fungal Diversity 74, 53–89.

Lawrey JD, Diederich P, Nelsen MP, Freebury C. et al. 2012 – Phylogenetic placement of lichenicolous Phoma species in the Phaeosphaeriaceae (Pleosporales, Dothideomycetes). Fungal Diversity 55, 195–213. 

Trakunyingcharoen T, Lombard L, Groenewald JZ, Cheewangkoon R. et al. 2014 – Mycoparasitic species of Sphaerellopsis, and allied lichenicolous and other genera. IMA fungus 5, 391–414.

 

Entry by 

Thiyagaraja V, CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, P.R. China.

 

(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)

 

Published online 3 December 2024

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