Xylem embolism development under drought and its repair after drought release by stem cutting on woody species

2014 Fiscal Year Final Research Report

• Project/Area Number: 25850102
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Forest science
• Research Institution: The University of Tokyo
• Principal Investigator: OGASA Mayumi 東京大学, 新領域創成科学研究科, 日本学術振興会特別研究員PD (10646160)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 通水阻害 / 木部水分通導 / 道管 / MRI / アーティファクト

Outline of Final Research Achievements

Spatial pattern of xylem embolism development under drought stress and xylem water distribution after stem cutting under water were investigated non-destructively using magnetic resonance imaging system for three deciduous woody species. Xylem embolism was found at first around the pith in all species but its developing pattern was different among species. Xylem water distribution did not change after the release of drought stress by stem cutting, suggesting no short-term embolism repair on excised shoot.

Free Research Field

樹木生理生態学