Review -- A Journey with Plant Cell Division: Reflection at My Halfway Stop -- Genetics -- Replication of Nuclear DNA -- Transformations of Cellular Pattern: Progress in the Analysis of Stomatal Cellular Complexes Using L-Systems -- Endoreduplication and Growth of Fleshy Fruits -- Physiology -- Adaptation to a Changing Environment: The Regulatory Role of Small RNAs -- Growth Responses of Trees to Arctic Light Environment -- Initial Events Associated with Virus PBCV-1 Infection of NC64A -- The Role of Auxin in Root-Symbiont and Root-Pathogen Interactions: From Development to Defense -- Molecular Mechanism of Water and Gas Transport Across Biological Membranes and Consequences for Plant Physiology -- Systematics -- Lichen Systematics: The Role of Morphological and Molecular Data to Reconstruct Phylogenetic Relationships -- Ecology -- Systemic Resistance Induction by Vascular and Airborne Signaling -- Roots: The Acquisition of Water and Nutrients from the Heterogeneous Soil Environment -- Re-Evaluation of Allometry: State-of-the-Art and Perspective Regarding Individuals and Stands of Woody Plants -- Quaking Aspen#x2019;s Current and Future Status in Western North America: The Role of Succession, Climate, Biotic Agents and Its Clonal Nature -- Quaternary Palaeoecology of East and Southeast Asia and of the Pacific Ocean.