Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Diaporthe terebinthifolii causing leaf Spot on Pleoroma fotherghillae in Brazil.

Abstract

Pleroma fothergillae, also known as "princess flower", is an ornamental species native to Brazil and naturalized in several countries. In September 2018, leaf spots were observed in approximately 80% of the 50 P. fotherghillae plants grown in a nursery in the municipality of Curitiba-Paraná, Brazil. The spots were round shaped, with a necrotic brown center and a reddish-brown halo, ranging from 1 to 4 mm in diameter. High leaf fall was observed among plants presenting a higher severity. The causal pathogen was isolated and identified as Diaporthe terebinthifolii based on morphological characteristics, molecular data (sequence analysis of the internal transcribed spacer (ITS) region and partial of the tubby (TUB) and thyrotroph embryonic factor (TEF) genes), and pathogenicity tests. This is thought to be the first report of D. terebinthifolii causing leaf spot on P. fothergillae in Brazil and worldwide.