Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of kernel dry rot caused by Eremothecium coryli on hazelnut in Northwestern Italy.

Abstract

In the last 2 years, a survey of Italian hazelnut orchards has been carried out to investigate on the origin of defects of hazelnut kernels. Hazelnut kernel samples of cultivar 'Tonda Gentile Trilobata' collected in July 2017 from an orchard close to Vercelli province (northwestern Italy) were almost all damaged by a bug (Rhynchota, Pentatomidae) and had typical dry rot symptoms. Based on morphological characteristics, molecular sequence comparison and pathogenicity test, the causal agent was identified as Eremothecium coryli [Nematospora coryli]. This is thought to be the first report of E. coryli dry rot in Italy and western Europe in general, which has already reported by Bobev et al. (2018) in Bulgaria. This disease represents a further menace when associated with the invasive and greatly damaging brown marmorated stink bug.