Invasive Species Compendium

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Abstract

First report of anthracnose disease caused by Colletotrichum acutatum on Lupinus albus in Italy.

Abstract

Typical anthracnose symptoms were observed in spring 2013 on leaves, pods and stems of white lupin (Lupinus albus) plants on ∼200 ha out of the total cultivated area (600 ha) in Lecce Province (southern Italy). Disease incidence ranged from 60 to 80% in investigated fields. The infected organs, leaves and apical stems initially showed small, circular, brown spots 2-3 mm in diameter that evolved into larger sunken necrotic lesions with orange conidial masses in their centre. The causal pathogen was identified as Colletotrichum acutatum based on morphological, genetic (ITS) and pathogenicity analyses. This is thought to be the first report of C. acutatum on lupin in Italy.