Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Sclerotium rolfsii causing stem rot of Luffa cylindrica in Brazil.

Abstract

In February 2017, Luffa aegyptiaca plants with rotted and girdled stem bases were found in a commercial field in Frederico Westphalen, Rio Grande do Sul, Brazil. Disease symptoms later led to a collapse of stems. Necrotic areas were covered with white cotton mycelium as well as abundant spherical sclerotia. The causal pathogen was identified as Athelia rolfsii based on morphological, molecular and pathogenicity analyses. This is thought to be the first report of A. rolfsii causing disease on L. aegyptiaca in Brazil.