Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First record of acremonium wilt in tomato from Pakistan.

Abstract

During a survey in May 2011, tomato plants were observed exhibiting wilt symptoms on the vegetable farm of the University of the Punjab Lahore, Pakistan. Plants were pale yellow and stunted. Diseased plants were scattered in the field either singly or in groups of two or three. Lower leaves turned yellow following necrosis and shedding from the plants. Roots of diseased plants were dark brown in comparison to the healthy ones. Vascular browning was observed when infected stems were split longitudinally and sectioned transversely. Necrotic vascular strands were also observed in infected stems. Based on morphological characteristics, sequence analysis of the rDNA internal transcribed spacer regions and a pathogenicity test, the causal agent was identified as A. strictum. This is thought to be the first record of Acremonium wilt in tomato.