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Scientia fungorum
On-line version ISSN 2594-1321
Abstract
TOVAR-PEDRAZA, Juan Manuel et al. SEM observations of five Erysiphales species on ornamental and fruit plants in the State of Mexico, Mexico. Sci. fungorum [online]. 2018, vol.48, pp.33-43. ISSN 2594-1321. https://doi.org/10.33885/sf.2018.48.1197.
Background
The patterns on outer and end walls of conidia observed in scanning electron microscopy (MEB) combined with light microscopy (ML) analysis are a powerful tool for the identification of Erysiphales anamorph species.
Objective
To perform a morphological analysis by MEB of Erysiphales anamorphs present on sundrops (Oenothera fruticosa), common marigold (Calendula officinalis), bigleaf hydrangea (Hydrangea macrophylla), oxeye daisy (Leucanthemum vulgare) and lemon (Citrus limon) plants.
Methods
The morphological characterization of Erysiphales specimens was performed by SEM and complemented using ML.
Results and conclusions
The examination by MEB allowed the characterization of conidiophores, conidia, hyphal appressoria, hyphae, and germ tubes of Erysiphe sp., Podosphaera xanthii, Pseudoidium hortensiae, Golovinomyces macrocarpus and Erysiphe quercicola. To our knowledge, this is the first report of Golovinomyces macrocarpus causing powdery mildew on L. vulgare in Mexico.
Keywords : Erysiphe sp.; Podosphaera xanthii; Pseudoidium hortensiae; Golovinomyces macrocarpus; Erysiphe quercicola.
