Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Transmission electron micrographs of cross sections of cucumber roots inoculated with F. oxysporum strain Fo47. (A) Osmiophilic material lining the primary walls of invaded intercellular spaces (arrow) extends toward the inside to coat Fo47 hyphae (F). The host cell wall (HCW) is labeled with gold-complexed exoglucanase. Bar, 0.5 μm. (B) Occlusion of an intercellular space (IS) with a fibrillar matrix (FM) in which fungal cells (F) are trapped. WA, wall apposition. Bar, 1 μm.
