Invasive Species Compendium

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Abstract Full Text

First report of botrytis blight caused by Botrytis cinerea on Helichrysum bracteatum in Italy.


In the winter 2016, a leaf and stem blight was observed on 5-month-old plants of Helichrysum bracteatum growing in a farm located in Albenga (Savona province, northern Italy). Chlorosis and browning of leaves, stems and inflorescences were followed by necrosis and affected tissues wilted and desiccated. Most affected plants eventually died. Based on morphological characteristics, sequence analysis of the DNA internal transcribed spacer region and pathogenicity test, the causal agent was identified as B. cinerea. B. cinerea on H. bracteatum was previously reported in Denmark and in Japan. This is thought to be the first report of B. cinerea on H. bracteatum in Italy.