The secondary metabolites profile of Stemphylium lycopersici, the causal agent of tomato grey leaf spot, is complex and includes host and non-host specific toxins

MEDINA, ROCIO; BAHIMA, JOSÉ VERA; SAPARRAT, MARIO C. N.; FRANCO, MARIO E. E.; DA CRUZ CABRAL, LUCÍA; PATRIARCA, ANDREA; BALATTI, PEDRO A.

AUSTRALASIAN PLANT PATHOLOGY

CSIRO PUBLISHING

Año: 2020

0815-3191

The aim of this work was to characterize the secondary metabolite (SMs) profile of Stemphylium lycopersici, a necrotrophic fungus that causes the disease known as grey leaf spot. We detected twenty-four SMs in cultures of S. lycopercisi within the extracts of 19 isolates. Each of them presented a characteristic unique profile. While highly virulent isolates synthesized a high number of metabolites (15), the low virulent ones synthesized a low number of SMs (2). However, a PCA analysis could not establish the relationship between SMs and virulence. Infectopyrone was the most frequent metabolite produced by the isolates (89%).