Rhizoctonia-like fungi are the main mycorrhizal fungi in orchid roots. Morphological characterization and analysis of conserved sequences of genomic DNA are frequently employed in the identification and study of fungi diversity. However, phytopathogenic Rhizoctonia-like fungi have been reliably and accurately characterized and identified through the examination of the fatty acid composition. To evaluate the efficacy of fatty acid composition in characterizing and identifying Rhizoctonia-like mycorrhizal fungi in orchids, three Epulorhiza spp. mycorrhizal fungi from Epidendrum secundum, two unidentified fungi isolated […]

Rhizoctonia-like mycorrhizal fungi Epulorhiza spp. have been isolated from orchids of the genus Epidendrum and have been used to promote the symbiotic germination of orchid seeds. Epidendrum secundum is a widely distributed orchid in campo de altitude (high elevation grassy vegetation) regions of the State Park of Serra do Brigadeiro (PESB), Minas Gerais, Brazil, and little is known about the mycorrhizal relationships of this species in the park. The objective of this study was to evaluate the morphological diversity of […]