Mycobiology.  2019 Sep;47(3):319-328. 10.1080/12298093.2019.1633902.

Cytospora elaeagnicola sp. nov. Associated with Narrow-leaved Oleaster Canker Disease in China

• Zhang L
• Alvarez LV
• Bonthond G
• Tian C
• Fan X

• KMID: 2470143
• DOI: http://doi.org/10.1080/12298093.2019.1633902

Abstract

Cytospora is a genus including important phytopathogens causing severe dieback and canker diseases distributed worldwide with a wide host range. However, identification of Cytospora species is difficult since the currently available DNA sequence data are insufficient. Aside the limited availability of ex-type sequence data, most of the genetic work is only based on the ITS region DNA marker which lacks the resolution to delineate to the species level in Cytospora. In this study, three fresh strains were isolated from the symptomatic branches of Elaeagnus angustifolia in Xinjiang Uygur Autonomous Region, China. Morphological observation and multi-locus phylogenetic analyses (ITS, LSU, ACT and RPB2) support these specimens are best accommodated as a distinct novel species of Cytospora. Cytospora elaeagnicola sp. nov. is introduced, having discoid, nearly flat, pycnidial conidiomata with hyaline, allantoid conidia, and differs from its relatives genetically and by host association.

Keyword

Cytosporaceae; molecular phylogeny; new species; taxonomy

MeSH Terms

Base Sequence
China*
Classification
Elaeagnaceae
Genetic Markers
Host Specificity
Humans
Hyalin
Spores, Fungal
Genetic Markers