Transplantation Experiment of Lichen Thalli of Parmotrema tinctorum (Ascomycotina, Parmeliaceae)

摘要

Transplantation of square fragments of thalli was successfully performed for Parmotrema tinctorum. The fragments were covered with pieces of nylon mesh stapled to the substratum and were cultured on the trunks of Cryptomeria japonica under natural condition. Numerous granules, cylindrical protuberances and lobules were formed on the periphery of the fragments 15 months after transplantation. The granules and cylindrical protuberances seemed to have been originated from the upper cortex and medulla, including algal layer, of the transplanted fragments and resemble isidia formed on the upper surface. They were fused each other to form obovate or palmate dorsiventral protuberances and lobules in later stages. Lecanoric acid and atranorin were producedin the newly developed lobules.