The Infection Biology of Sphaerulina musiva: Clues to Understanding a Forest Pathogen
Figure 6
Bright field micrographs of susceptible clone (NC11505), at three different time points (3 weeks, 5 weeks, and 7 weeks) post-inoculation (PI) with blue stained hyphae, indicated by arrows, visible in different tissues.
(A) Longitudinal section depicting hyphal growth in cortex at 3 weeks PI. (B) Transverse section through cortex depicting hyphal growth at 5 weeks PI. (C) Transverse section through xylem at 7 weeks PI depicting hyphal growth in xylem vessels (XV) and rays (XR). (D) Longitudinal section through xylem tissue depicting hyphal growth in vessels and rays. COX = Cortex, Pf = Primary phloem fiber, Pyc = Pycnidium, P = Periderm. Scale bars = 200 µm.