Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of leaf spot caused by Cladosporium oxysporum on greenhouse eggplant in China.

Abstract

In April 2013, a leaf spot was discovered on aubergine cultivar 706 in 10 one-ha commercial greenhouses in Huludao, Liaoning Province, with 30% of the plants infected, resulting in reduced yield and quality. By July 2013, the disease incidence was 35%. Spots were found mainly on the leaves. At the early stage of infection, small, chlorotic spots appeared on leaves and gradually expanded into brown, irregular spots with a diameter of 1 to 7 mm. Dark green mould developed in the spots on both sides of the leaves at high humidity, and the spots led to leaf yellowing and defoliation. Based on morphological characteristics, sequence analysis of the rDNA internal transcribed spacer region and pathogenicity tests, the causal agent was identified as C. oxysporum. This is thought to be the first report of C. oxysporum causing leaf spot on greenhouse aubergine in China. C. oxysporum is a known pathogen of pepper and tomato.