Mechanism of lignin deposition into tree leaves

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450239
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Wood science
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: Matsui Naoyuki 国立研究開発法人森林総合研究所, 森林資源化学研究領域, 主任研究員 (80353853)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 葉 / リグニン / DFRC法 / S/G比 / 光ストレス

Outline of Final Research Achievements

The process of lignin deposition in the course of leaf growth was investigated by DFRC analysis. The increase of lignin in leaves of Fagus, Magnolia and Cercidiphyllum was observed in a short period, from late April to mid May. The distribution of lignin in beech leaf was investigated in detail to find out the heterogeneity in lignin composition. Leaf vein separated from beech leaf contained lignin with low S/G ratio, and other blade tissue had apparently syringyl-rich lignin. The hypothesis that these syringyl lignin in leaf tissue has some defensive roles against light stress was denied by the results of increased S-lignin in leaves under weaker light condition.

Free Research Field

樹木化学