In this study Stagonosporopsis vannaccii, causing leaf lesions and spots on basil (Ocimum basilicum) in Piedmont, Northern Italy, is described. This pathogen was characterised using a polyphasic approach including morphological characters and a multilocus molecular phylogenetic analysis based on the nuclear ribosomal internal transcribed spacer (ITS) region, the RNA polymerase second largest subunit gene (rpb2) and partial regions of the β-tubulin (tub2), actin (act) and translation elongation factor-1α (tef1) genes. Pathogenicity tests and the fulfilment of Koch’s postulates confirm S. vannaccii as a novel foliar pathogen of O. basilicum. To our knowledge, this is the first report of S. vannaccii as pathogen of sweet basil.
A new foliar disease of sweet basil caused by Stagonosporopsis vannaccii
Guarnaccia V.;
2022-01-01
Abstract
In this study Stagonosporopsis vannaccii, causing leaf lesions and spots on basil (Ocimum basilicum) in Piedmont, Northern Italy, is described. This pathogen was characterised using a polyphasic approach including morphological characters and a multilocus molecular phylogenetic analysis based on the nuclear ribosomal internal transcribed spacer (ITS) region, the RNA polymerase second largest subunit gene (rpb2) and partial regions of the β-tubulin (tub2), actin (act) and translation elongation factor-1α (tef1) genes. Pathogenicity tests and the fulfilment of Koch’s postulates confirm S. vannaccii as a novel foliar pathogen of O. basilicum. To our knowledge, this is the first report of S. vannaccii as pathogen of sweet basil.
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