2013 Fiscal Year Final Research Report

Studies on extractives that are present in intervessel pits: characterization and its influence on water conduction

Research Project

Project/Area Number	23580223
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Wood science
Research Institution	Hokkaido University
Principal Investigator	SANO Yuzou 北海道大学, (連合)農学研究科(研究院), 教授 (90226043)
Co-Investigator(Kenkyū-buntansha)	KODA Keiichi 北海道大学, 大学院農学研究院, 講師 (80322840)
Project Period (FY)	2011 – 2013
Keywords	道管相互壁孔 / 通水 / 抽出成分
Research Abstract	Recent studies have revealed that ethanol-soluble materials are present in intervessel pits in a limited angiospermous species. This study was aimed to reveal the nature of the extractive materials. The extractives were present in 3 species representing 3 families of a total of 13 species representing 11 families examined, an indication that the materials are not rare but widely appear in a variety of taxonomic groups. It was also apparent that the presence or absence is not a feature at the level of family. Histochemical examinations have revealed that the extractive materials are not polysaccharides and lipids.