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Articles containing the keyword 'Sphaeropsis sapinea'
Category : Research note
article id 22008,
category
Research note
(2023).
First report of Diplodia tip blight on Scots pine in Finland.
Silva Fennica
vol.
56
no.
4
article id 22008.
https://doi.org/10.14214/sf.22008
Highlights:
Diplodia tip blight is a new disease on Scots pine in Finland; Diplodia sapinea can be identified reliably with the presented pipeline.
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Author Info
Diplodia sapinea (Fr.) Fuckel causes shoot blight on Scots pine (Pinus sylvestris L.). This fungus has been discovered in Finland as a saprophyte in 2015 on Scots pine cones. The endophytic mode of this fungus was later discovered in healthy Scots pine twigs. In 2021 the disease, Diplodia tip blight was observed on Scots pine in Finland. Currently, the disease symptoms are poorly identified so the role of D. sapinea in disease outbreaks in Finland are easily overlooked. The identification of the fungi is challenging in field conditions and requires targeted identification in laboratory. In this research note I report the first Diplodia tip blight outbreaks observed in Finland, the typical disease symptoms, and methodology for the species identification. Samples were collected from symptomatic trees based on observations made by the citizens. Diplodia sapinea was isolated from defoliated and surface sterilized twigs. The species identification by morphological characters was further confirmed with sequencing of ITS region of rDNA and with species-specific primers. A pathogenicity test confirmed that D. sapinea was the disease agent causing shoot blight. This is the first report of Diplodia tip blight on Scots pine in Finland.
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Terhonen,
Natural Resources Institute Finland (Luke), Forest health and biodiversity, Latokartanonkaari 9, FI‐00790 Helsinki, Finland
0000-0002-9288-440X
E-mail:
eeva.terhonen@luke.fi
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