Uredinales em asteridae da Estação Científica Ferreira Penna (ECFPN)

Abstract

The fungi of the order Uredinales are classified in the phylum Basidiomycota, in the class Urediniomycetes and are known as plant rusts. The present work is part of the project to survey the Uredinales species of the Caxiuanã National Forest, and aims to identify, relate and describe the species of Uredinales deposited in the herbarium "João Murça Pires" (MG), of the Emílio Goeldi Museum of Pará - MPEG, which were collected in the ECFPn, parasitizing plant species of families of the subclass Asteridae (Apocynaceae, Bignoniaceae, Compositae, Convolvulaceae and Rubiaceae). The ECFPn is located inside the Caxiuanã National Forest, in the eastern Amazon. It has several ecosystems, including terra firme forest, várzea and igapó. Microscopic observations of the study material were made from semi-permanent slides of the sera and spores, mounted on lactophenol and heated. For identification, specialized literature and comparisons with other specimens, identified and deposited in the MG herbarium, were used. Fifty-five plant specimens were examined and eleven taxa of Uredinales were identified, representing eight genera: Coleosporium, Crossopsora, Phragmidiella, Porotenus, Prospodium, Puccinia, Uredo and Uromyces. The identified specimens were collected in terra firme forest, várzea, igapó and capoeira environments. The Bignoniaceae family was the best represented in terms of number of specimens and species of identified rusts.