Role of non-cellulosic polysaccharides in tension wood formation

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K07511
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Wood science
• Research Institution: Kyoto University
• Principal Investigator: Tatsuya Awano 京都大学, 農学研究科, 助教 (40324660)
• Research Collaborator: TAKABE Keiji ; KOJIMA Miho ; YOKOYAMA Masato ; YONEKAWA Tsubasa
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 引張あて材 / ヘミセルロース / ペクチン / 免疫局在 / オポジット材

Outline of Final Research Achievements

In tension wood of hardwood species, glucuronoxylan and glucomannan, which are typically found in secondary wall, decreased during the formation of fiber cell wall. On the other hand, pectic polysaccharides such as rhamnogalacturonan I, arabinogalactan and arabinogalactan protein increased.
It is not appropriate to use opposite wood as control to tension wood, because immunolocalization of non-cellulosic polysaccharides were different between opposite wood and normal wood.
Freeze-fracture field emission scanning electron microscopy reveals the morphology of wood fiber in whole scale and at the same time the ultrastructure of cell wall in nano-scale. Therefore, the method is useful to observe the changes in ultrastructure during the cell wall formation of tension wood.

Free Research Field

樹木細胞学