First report of Volutella buxi causing volutella blight on Buxus bodinieri in central plains China.
In the autumn of 2014, leaf spots were observed on Buxus bodinieri in a commercial gardening nursery located in Henan, China. The disease continually occurred and spread in the spring of 2015. Initially, black or bronze spots were observed on leaves. The spots gradually expanded and turned white in the centre and bronze on the boundary between healthy and blighted tissue. Light rose-coloured sporodochia and white mycelium were observed on the abaxial leaf surface. Eventually, the diseased leaves withered and defoliated. Sometimes, twigs displayed black spots and dieback. The plants were still alive but their commercial value had sharply dropped. The causal pathogen was identified as Pseudonectria rousseliana based on morphological, molecular and pathogenicity analyses. This is thought to be the first report of P. rousseliana causing volutella blight on B. bodinieri in the central plains of China.