A fungus was collected from a dead twig of Ulmus minor × Ulmus pumila in Southern European Russia. The phylogenetic analysis based on combined gene regions of Internal transcribed spacer (ITS), the large subunit of nuclear ribosomal RNA (LSU), beta-tubulin (TUB2) and the second-largest subunit of nuclear RNA polymerase II (RPB2) sequence dataset shows that species clusters within the genus Nothophoma. Morphological characteristics and phylogenetic results confirmed that the fungus is Nothophoma quercina. Since this is the first report of N. quercina from Ulmus, we report this species as a new host record from Ulmus minor × Ulmus pumila in Russia. A detailed description, colour photographs and a phylogenetic tree to show the placement of N. quercina are given.
Congratulations, Napalai Chaiwan and co-authors!
