Phylogeny and mycotoxin profiles of pathogenic <i>Alternaria</i> and <i>Curvularia</i> species isolated from date palm in southern Tunisia.

ABSTRACT: Date palm (Phoenix dactylifera L.), is a widely cultivated crop across North Africa, with about 300 thousand tons of fruits produced per year, in Tunisia. A wide range of fungal pathogens has been associated with leaf spots of date palm, Alternaria species being the most frequently reported. Symptomatic leaves of Deglet Nour variety were randomly collected in six localities in Tunisia. We used a polyphasic approach to identify 45 Alternaria and five Curvularia strains isolated from date palm, confirming their pathogenicity. Sequencing of allergen Alt-a1, glyceraldehyde-3-phosphate dehydrogenase (gpd) and calmodulin genes allowed us to group 35 strains in Alternaria Section, and 10 strains in Ulocladioides section.

SUBMITTER: Rabaaoui A 

PROVIDER: S-EPMC9677452 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature