Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of a member of the Fusarium oxysporum species complex on Euphorbia pulcherrima willd. ex Klotzsch in Italy.

Abstract

During the winter season 2017, in a commercial nursery located in the area of Olmedo (Sassari, Italy), severe symptoms of stem rot were observed on Euphorbia pulcherrima. Rot symptoms originated from the collar and, as disease progressed, the entire stem collapsed and the plant wilted. The same symptoms reappeared in 2018, affecting approximately 10% of the potted plants. The causal pathogen was identified as Fusarium oxysporum based on morphological, molecular and pathogenicity analyses. This is thought to be the first report of F. oxysporum causing stem rot and wilt of E. pulcherrima in Italy.