Fig. 7.
Light micrographs of interactions between roots of D. officinale and mycorrhizal fungi JC02 or JC-05. (A and B) Transverse section across a mycorrhizal root of JC-02+ plant showing hypha (arrow) in the cells of velamen, the presence of intact (fp) and degenerate (d) pelotons in the cortical tissue; (C) enerate (d) pelotons in the cortical tissue as well as the hypha (arrow) and nucleus (star) in the exodermal passage cells; (D) transverse section of D. officinale root (noninoculated control). Annotation: VE, velamen; P, exodermal passage cell; EX, exodermis; CO, cortex; VS, vascular bundle sheath; N, nucleus.