| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2016: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
|
|---|
| Outline of Final Research Achievements |
The commercial values (color tone) of Cryptomeria japonica wood are affected by characteristics of the heartwood (HW, dark part at the central part of the wood) which are formed from the sapwood (SW, pale part surrounding heartwood) via intermediate wood (IW) with growth of the trees. The change from SW to HW via IW are called HW formation. In the HW formation of C. japonica, (1) what sort of compounds were formed, (2) how the compounds were formed (formation mechanism), and (3) where the compounds were synthesized at cellular level (synthesis site), were studied.
(1) Several kinds of new compounds were successfully isolated and their chemical structures were elucidated. The contents and distribution of these compounds in normal red-HW were different from those in abnormal black-HW. (2) It was demonstrated that these compounds were formed by oxidase enzymatic reaction in the HW and IW. (3) It was visualized the enzymatic reaction occurred in the ray parenchyma cells in the HW and IW.
|
