Three new Diaporthe species from Shaanxi Province, China
Qin Yang, Ning Jiang, Chengming Tian
Abstract
Diaporthe species (Sordariomycetes, Diaporthales) are often reported as important plant pathogens, saprobes and endophytes on a wide range of plant hosts. In this study, Diaporthe specimens were collected from symptomatic twigs and branches at the Huoditang Forest Farm in Shaanxi Province, China. Identification was done using a combination of morphology and comparison of DNA sequence data of the nuclear ribosomal internal transcribed spacer ( ITS), calmodulin (cal ), histone H3 ( his3 ), partial translation elongation factor-1α ( tef1 ) and β-tubulin ( tub2 ) gene regions. Three new Diaporthe species are proposed: D. albosinensis , D. coryli and D. shaanxiensis . All species are illustrated and their morphology and phylogenetic relationships with other Diaporthe species are discussed.