Tension wood (TW) is formed in leaning hardwood trees. One of the main characteristics of TW, which distinguishes it from normal wood, is the formation of fibers with a thick inner gelatinous cell wall layer. AVG and AgNO3 treatments do not inhibit the formation of gelatinous fibers on the adaxial side in horizontallypositioned Fraximus mandshurica seedlings. The cover picture shows gelatinous fibers formed in these seedling. See pages 707–713 for details (cover design: Ying Wang).