FIG. 1.

(A) Three-dimensional schematic of a leaf. Phyllosphere bacteria colonize the surface of the epidermis and the intercellular spaces (apoplast). Reprinted from reference 299 with permission. (B) Low-magnification electron micrograph of the adaxial surface of a pea (Pisum sativum) leaf. Reprinted from reference 203 with permission. (C) Electron micrograph of a carbon replica of the adaxial surface of a corn (Zea mays) leaf. Note the waxy protuberances. Reprinted from reference 203 with permission.