Abstract:
Hyphodermella is a genus of corticioid white rot fungi from the Phanerochaetaceae. Molecular data (partial SSU, LSU and
complete ITS nrDNA) confirm the mitosporic state of Hyphodermella rosae as the causal agent of dry fruit rot of plum (Prunus
domestica) and peach (Prunus persica) from Mazandaran, Iran. The asexual state of H. rosae is characterized by the presence of
unicellular, spherical mitospores, which are terminal or intercalary in position. Both basidia and mitospores were observed in the
matured cultures of H. rosae, although we did not observe any basidiospores. The phylogeny of Phanerochaetaceae confirms Hyphodermella
as a monophyletic lineage within the family and sister group to Phanerochaete with considerable bootstrap support.
Both the isolates of mitosporic H. rosae nest within a clade, which includes its sexual counterpart. Hence, we conclude that the
lifecycle of H. rosae includes at least two reproductive states, i.e. sexual and asexual. Mitosporic H. rosae is capable of infecting
plants and produce similar disease symptoms as its sexual state.
