Fig. 1

Morphological observations of the representative UM isolate. a Top view of culture on SDA plate for 6 days at 30 °C. b Black color from the reverse view of culture on SDA plate, indicating the presence of melanized hyphae. c Microscopic observation; the arrow shows the conidia produced in sympodial sequence. Bar scale is 20 μm. d Microscopic observation; the arrow shows the conidiophore branching from the conidiogenous area. Bar scale is 20 μm. e Scanning electron micrograph; the arrow shows the conidium with flattened base. Bar scale is 1 μm. f Scanning electron micrograph; the arrow shows the rough surface of conidiophore. Bar scale is 2 μm