Phylogeny and Mycotoxin Characterization of Alternaria Species Isolated from Wheat Grown in Tuscany, Italy

Overview

Journal Toxins (Basel)

Publisher MDPI

Specialty Toxicology

Date 2018 Nov 17

PMID 30441835

Citations 14

Authors

Francesca A Ramires

Mario Masiello

Stefania Somma

Alessandra Villani

Antonia Susca

Antonio F Logrieco

Carlos Luz

Giuseppe Meca

Antonio Moretti

Affiliations

Soon will be listed here.

Abstract

Wheat, the main source of carbohydrates worldwide, can be attacked by a wide number of phytopathogenic fungi, included species. species commonly occur on wheat worldwide and produce several mycotoxins such as tenuazonic acid (TA), alternariol (AOH), alternariol-monomethyl ether (AME), and altenuene (ALT), provided of haemato-toxic, genotoxic, and mutagenic activities. The contamination by species of wheat kernels, collected in Tuscany, Italy, from 2013 to 2016, was evaluated. contamination was detected in 93 out of 100 field samples, with values ranging between 1 and 73% (mean of 18%). Selected strains were genetically characterized by multi-locus gene sequencing approach through combined sequences of allergen alt1a, glyceraldeyde-3-phosphate dehydrogenase, and translation elongation factor 1α genes. Two well defined groups were generated; namely sections and . Representative strains were analyzed for mycotoxin production. A different mycotoxin profile between the sections was shown. Of the 54 strains analyzed for mycotoxins, all strains included in Section produced AOH and AME, 40 strains (99%) produced TA, and 26 strains (63%) produced ALT. On the other hand, only a very low capability to produce both AOH and AME was recorded among the Section strains. These data show that a potential mycotoxin risk related to the consumption of contaminated wheat is high.

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