Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Neofusicoccum parvum causing stem blight and dieback of blueberry in Mexico.

Abstract

During the 2011 to 2014 growing seasons, symptoms of stem blight and dieback of blueberry (Vaccinium corymbosum cv. Biloxi) were observed in high-tunnel and open-field production systems in Michoacan and Jalisco, Mexico. Symptoms appeared as splitting of the base of the stem and light brown leaves that died and remained attached to the stem. Symptoms usually developed on one to three stems of affected plants. Cross sections of canes showed darkening of wood, sometimes V-shaped. Five millimetre tissue sections were obtained from stems of symptomatic plants. Based on morphological characteristics, sequence analysis of the rDNA internal transcribed spacer region and pathogenicity tests, the causal agent was identified as N. parvum. This fungus was previously reported causing stem blight and dieback of blueberry in Chile. This is thought to be the first report of N. parvum causing stem blight and dieback of blueberry in Mexico.