Fig. 2
From: Histological and molecular responses of Vigna angularis to Uromyces vignae infection
Adzuki bean leaves of different cultivars infected by U. vignae (Uv) were examined under an epifluorescence microscope after being stained with Calcofluor. (A), infection hyphae (Ih) and Haustoria mother cells (Hm) were generated from substomatal vesicles (Sv) in the susceptible variety (BQH) at 24 hpi. (B), deformed Sv without Ih or Hm developed in the resistant variety (QH1) at 24 hpi. (C), Ih formed branches and produced intracellular haustoria (Ha) in BQH plants at 48 hpi, and the host cells showed no obvious reactions despite the fungal invasion. (D), autofluorescence was observed in the periphery of the Ha (red arrows) and mesophyll cells at the infection sites. The scale bar represents 20 μm