Chaetopyrena Pass. (1881)

Jayasiri, Subashini Chathumini, Tibpromma, Saowaluck, Xu, Ruifang, Bhat, Darbhe Jayarama, Elgorban, Abdallah M., Karunarathna, Samantha C., Rampelotto, Pabulo H., Han, Meiyan & Xu, Jianchu, 2024, Unveiling new fungal discoveries in Yunnan Province, China, Phytotaxa 676 (2), pp. 103-125 : 109

Chaetopyrena Pass. (1881)

Chaetopyrena hesperidium is the type species of the genus ( Crous et al. 2004). Chaetopyrena is characterized by setose pycnidia, flask-shaped conidiogenous cells, and one-celled hyaline conidia ( Arzanlou & Khodaei 2012). Currently, 19 records have been introduced under the Chaetopyrena ( Index Fungorum 2024) ; however, for several of these, there are no living cultures available, and many of them were transferred to other genera ( Arzanlou & Khodaei 2012). In the phylogenetic analyses of Gruyter et al. (2010), Chaetopyrena penicillata was grouped with Phoma herbarum in the Didymellaceae . However, in the latest classification, Chaetopyrena is classified under Ascomycota genera incertae sedis (Wijayawardene et al. 2022). In this study, our new strain clusters within Chaetopyrena penicillata strains, while the Chaetopyrena penicillata strains lineage is sister to the genus Paraboeremia within Didymellaceae ( Figure. 1 ). Here, we provide an amended description for Chaetopyrena penicillata with an SEM photograph of the conidia. However, further studies are needed to clarify the placement of Chaetopyrena .

Figures

FIGURE 1.The phylogram generated from maximum likelihood analysis based on LSU andITS sequence data representingDidymellaceae species. Related sequences are obtained from GenBank. Thirty-nine strains were included in the combined analyses, with Leptosphaeria doliolum (CBS 505.75) as the outgroup taxon. Bootstrap values for ML are equal to or greater than 70%, and clade credibility values are equal to or greater than 0.95 (the rounding of values to 2 decimal proportions) from the BYPP analysis labeled on the nodes. A newly generated sequence is in blue, and type species are bold.