Cylindrocladiella parva as a causal agent of dieback on Euonymus fortunei
Keywords:
Pathogenicity, morphology, sequence analysis, Cylindrocladium, ornamental shrub, symptomsAbstract
In August 2011 a shoot dieback of unknown cause was observed on Euonymus fortunei. From the affected shoots a fungus similar to Cylindrocladium was isolated. According to its morphological characteristics this fungus could be identified as Cylindrocladiella parva (P.J. Anderson) Boesewinkel. The subsequent sequence analysis of the ITS regions as well as the β-tubulin-gene confirmed this result. Pathogenicity of this fungus was tested in several trials on E. fortunei 'Emerald’n Gold'. After inoculation of wounded nodes with the fungus and incubation with high humidity two year old plants developed disease symptoms within seven weeks. Cylindrocladiella parva could be reisolated from infected shoots. This is the first occurrence of Cylindrocladiella parva on E. fortunei in Germany according to our knowledge.
DOI: 10.5073/JfK.2014.01.01, https://doi.org/10.5073/JfK.2014.01.01