Cytospora species associated with walnut canker disease in China, with description of a new species C. gigalocus

Discovery of Cytospora species associated with canker disease of tree hosts from Mount Dongling of China

“…Cytospora coryli is associated with canker disease of Corylus mandshurica in China. The only strain CFCC 53162 representing Cytospora coryli clusters as a single lineage and appears mostly related to C. euonymicola from Euonymus kiautschovicus and to Cytospora gigalocus from Juglans regia (Fan et al 2015a(Fan et al , 2020 (Fig. 2).…”

“…Adams et al (2005) revised the genus Cytospora from Eucalyptus with 28 species and accepted all sexual genera combined under Valsa, either as subgenera or species without additional infrageneric rank. Following the single-name for pleomorphic taxa, Cytospora (1818), the older asexual typified name was proposed as the recommended name against Valsa (1849), the younger sexual typified name (Fan et al 2015a, b, Rossman et al 2015.…”

Multigene phylogeny and morphology reveal Cytospora spiraeae sp. nov. (Diaporthales, Ascomycota) in China

“…1). In the past five years alone, the polyphasic approach (morphological identification and phylogenetic species recognition concept) has led to the descriptions of additional new species of Cytospora in China (Wang et al 2013;Zhang et al 2014;Fan et al 2014aFan et al , 2014bFan et al , 2015aFan et al , 2015bYang et al 2015;Lawrence et al 2017;Norphanphoun et al 2017), which were included here. The current study indicated that the Cytospora spiraeae represents a novel species with high support value (MP/ML/BI = 100/100/1) (Fig.…”

“…More than 600 species epithets named Cytospora have been recorded in Index Fungorum (2017) with an estimated 110 species in Kirk et al (2008). Recent studies have subsequently emphasized on part of Cytospora species using multiphase approaches to solve the confused frame (Fan et al 2014a(Fan et al , 2014b(Fan et al , 2015a(Fan et al , 2015bYang et al 2015;Lawrence et al 2017;Norphanphoun et al 2017). However, only ITS gene are available for most known Cytospora species, and extype sequence data are available for only a very few species and many taxa need epitypifying (Adams et al 2005).…”

Cryptosporella platyphylla, a new species associated with Betula platyphylla in China

“…Descriptive tree statistics (Tree Length [TL], Consistency Index [CI], Retention Index [RI] and Rescaled Consistency [RC] were calculated. ML analysis was also performed with a GTR site substitution model following previous studies (Guindon et al 2010, Fan et al 2015. A bootstrapping (BS) analysis (1,000 replicates) was calculated to assess the branch support (Hillis and Bull 1993).…”