Forest Pathology (2020) 50 (6 - e12653)

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Ilker Kurbetli, Mehmet Aydogdu, Görkem Sülü, Stephen Woodward and Fikret Demirci (2020)
A potential role for Botryosphaeria parva (anamorph Neofusicoccum parvum) in plane tree (Platanus orientalis) decline in Istanbul, Turkey
Forest Pathology 50 (6 - e12653)
Abstract: Dieback and trunk canker symptoms were observed on centenarian plane trees (Platanus orientalis) in Gezi Park and Dolmabahçe Avenue in Istanbul province of Turkey in August 2015. Reddish-brown canker lesions covered approximately half of the tree trunk, from roots to top of the trees. The external symptoms were chlorosis, defoliation and dieback, and most of the affected trees were leafless. Three fungal species were isolated from necrotic root and stem tissues and identified as Botryosphaeria parva (Anamorph Neofusicoccum parvum), Neopestalotiopsis clavispora and Diaporthe foeniculina (Anamorph Phomopsis theicola) by morphological characteristics and sequencing of the internal transcribed spacer (ITS) and the β-tubulin (β-tub) gene regions. Inoculations on two-year-old P. orientalis seedlings demonstrated that all three species were pathogenic, but B. parva caused the largest lesions on stems of plane seedlings. Dual inoculations did not show any synergism in pathogenicity. This paper is the first report of B. parva, N. clavispora and D. foeniculina causing root rot and stem canker of plane trees in Turkey, and probably worldwide.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ilker Kurbetli, Stephen Woodward, Fikret Demirci

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
population dynamics/ epidemiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Neofusicoccum parvum Plane tree/sycamore (Platanus) Turkey
Diaporthe foeniculina Plane tree/sycamore (Platanus) Turkey
Neopestalotiopsis clavispora Plane tree/sycamore (Platanus) Turkey
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