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Ramulispora sorghi: a new pathogen of sorghum in NE Argentina.

Cúndom, M. A. ; Namtz, Y. ; Gutiérrez, S. A.

Summa Phytopathologica 2016 Vol 42 No. 2 pp. 183-184;

Abstract

During surveys conducted in 2012 and 2013 to monitor the health status of sorghum in the province of Corrientes (Argentina), numerous plants (cultivar DK 61T) were observed to have necrotic lesions throughout the leaf area and even the leaf sheaths. Light brown spots on leaves with elliptical, elongated and purple margins surrounded by prominent halo were observed on the diseased leaf samples. The leaves also becamechlorotic and the lesions may coalesce causing severe blighting. The causal pathogen was identified as Ramulispora sorghi based on morphological and pathogenicity analyses. This is thought to be the first report of R. sorghi on sorghum in Argentina.