Cover illustration: The top picture shows Gastrophysa viridula and Uromyces rumicis on a leaf of Rumex obtusifolius (courtesy of Dr Nigel Paul, Lancaster University, UK). The second picture shows inputs and outputs of H2O2/NO signalling pathways (see Desikan et al., pp. 205-212). The third picture shows immunofluorescence co-localization of microtubules (green, labelled with FITC) and stress-induced MAP kinase SIMK (red, labelled with Texas Red) after taxol treatment of meristematic root cells of Medicago sativa (see Šamaj et al., pp. 189-198). The final picture shows a signalling network for ABA and blue light in stomatal guard cells (courtesy of Professor Alistair Hetherington, Lancaster University, UK).
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