Pseudorobillarda sichuanensis sp. nov. associated with Bambusa sp. from Sichuan province, China

Abstract

During an investigation of ascomycetous fungi on bamboos in Sichuan province, China, a new coelomycetous species, Pseudorobillarda sichuanensis was found on dead culms of Bambusa sp. and described. The new taxon differs from other Pseudorobillarda species in having paraphyses, subcylindrical conidiogenous cells, subcylindrical to naviculate, aseptate, guttulate conidia with 3-4 apical appendages. Phylogenetic analyses of a combined internal transcribed spacer (ITS), the partial 28S large subunit rDNA (LSU), the partial 18S small subunit rDNA(SSU) and the partial DNA-directed RNA polymerase II subunit (rpb2) sequence data showed that P. sichuanensis has a close phylogenetic affinity to P. texana. A novel bambusicolous fungi of Pseudorobillarda is described, illustrated and notes on its identification are provided.