Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Symptoms associated with Aphelenchoides fragariae and Pseudomonas cichorri infections of Philippine violet.

Abstract

A. fragariae and P. cichorii were found interacting and causing damage on Barleria cristata in a Florida nursery. This is the first report of this association. If only nematodes were involved, the symptoms began as chlorotic vein delineated areas which later changed to light brown, then dark brown, and finally black. If only the bacterium was the causal agent, the leaf spots became black soon after infection and then the lesions turned a light brown with a purplish-black border. Diffuse chlorotic halos were seen only around bacterial lesions. If both organisms were involved, symptoms were a combination of those caused by each one alone.