First report of gladiolus rust caused by Uromyces transversalis in Cuba.
Martínez-de la Parte, E.; Pérez-Vicente, L.; Cantillo-Pérez, T.; Guerrero-Barriel, D.; Ramos, A.
Central Plant Quarantine Laboratory, Ministry of Agriculture of Cuba, Ayuntamiento 231 between San Pedro and Lombillo, Plaza, Havana City, Cuba.
New Disease Reports 2011 Vol. 23 pp. Article 20
British Society for Plant Pathology, UK
Language of Text
In March 2010, rust lesions were observed on the leaves of hybrid gladiolus (Gladiolus sp.) plants in a garden located in the outskirts of Santiago de Cuba city and in a flower production field in Güira de Melena (Santiago de Cuba and Havana provinces, respectively). The incidence of the disease in both locations was almost 100%, with varying levels of severity. Lesions bearing uredinia were bright orange and variable in shape (from globose to oval to transversely elongate). Uredinia (1-3 mm long) were scattered or grouped, orange, elliptical to irregular, and arranged transversely across the leaf. Urediniospores were bright yellow gold, ovate to oblong, and measured 16-26 × 13-19 µm. The urediniospore wall was hyaline, minutely echinulate, and 1.5- to 2.5-µm thick. Telia were scattered, dark brown, elliptical, bearing nonseptate, light-to-brown teliospores that measured 22-25 × 14-18 µm, with an apical thickening measuring 2-4 µm. Paraphyses were densely aggregated. Based on these characters, the rust was identified as U. transversalis. This is the first report of U. transversalis causing gladiolus rust in Cuba.