Toxin Production by <i>Alternaria alternata</i> in Black Spot Disease of <i>Chrysanthemum morifolium</i> 'Fubai': Accumulation of Altenuene and Tenuazonic Acid in Flowers.

ABSTRACT: Alternaria species produce diverse secondary metabolites that act as critical virulence factors during plant pathogenesis. In cultivation areas of Chrysanthemum morifolium 'Fubai'-a key cultivar for herbal tea-black spot disease caused by A. alternata manifests as necrotic leaf lesions progressing to wilting. Despite this disease's economic impact, information on its associated toxins is limited, and the types of toxins produced by the black spot pathogen of Chrysanthemum morifolium 'Fubai' in particular remain unclear. Furthermore, whether toxins are present in the flowers when the leaves show symptoms is uncertain, but their inflorescence is not visibly infected. Using two previously characterized A. alternata strains (F16/F20) isolated from 'Fubai' in

SUBMITTER: Zhan Q 

PROVIDER: S-EPMC12030965 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature