Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of cladode brown spot in cactus prickly pear caused by Neofusicoccum batangarum in Brazil.

Abstract

Cactus prickly pear (Nopalea cochenilifera [Opuntia cochenillifera]) cladodes showing brown spot symptoms were collected of 18 fields of the State of Pernambuco, northeastern Brazil, from March to June 2014. The symptoms were prevalent in 100% of fields surveyed. Based on cultural and morphological characteristics, molecular data (DNA sequencing of part of the elongation factor 1-alpha gene and the rDNA internal transcribed spacer region) and pathogenicity tests, the causal agent was identified as Neofusicoccum batangarum. This fungus was identified as the causal agent of dieback on Terminalia catappa in Cameroon, and on healthy seeds of Schinus terebinthifolius in the USA. This is thought to be the first report of Neofusicoccum batangarum causing cladode brown spot in cactus prickly pear in Brazil and worldwide.