First report of Neonectria neomacrospora on Abies grandis in Belgium.
In June 2017, symptoms of shoot dieback were detected on grand fir (Abies grandis) in Luxembourg, Belgium. Symptoms were observed on about 20% of the saplings which showed shoot tip necroses affecting lateral as well as terminal shoots. Bark of the necrotic areas displayed a purple to reddish colour and a reduction of shoot diameter was occasionally observed. Necroses were also associated with a browning and shedding of needles. The causal pathogen was isolated and identified as Neonectria neomacrospora based on morphological, molecular and pathogenicity analyses. The obtained sequences were deposited in GenBank as accession number MG049669 (ITS). This is thought to be the first report of shoot dieback caused by N. neomacrospora on A. grandis in Belgium.