The cover images show autophagic bodies inside the vacuolar lumen in an Arabidopsis root cell captured by transmission electron microscopy (top left; courtesy of Kohki Yoshimoto (Meiji University) and Yoshinori Ohsumi (Tokyo Institute of Technology), myrosinase-containing vacuoles of two types of idioblast; myrosin cells along leaf veins of Cardamine schinziana (Coomassie-blue staining) and guard cells of leaf epidermis of Arabidopsis (electron micrograph) (top right and bottom right, respectively; supplied by Makoto Shirakawa, Nara Institute of Science Technology), and an epidermal strip of a Pelargonium x hortorum petal with anthocyanin-containing shrunken vacuoles in each cell (bottom left; supplied by Rita de Brito Francisco and Lorenzo Borghi, University of Zurich).