Aluminum resistance mechanism with hydrolyzable tannins in Eucalyptus camaldulensis

2014 Fiscal Year Final Research Report

• Project/Area Number: 25850118
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Forest science
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: TAHARA Ko 独立行政法人森林総合研究所, 生物工学研究領域, 主任研究員 (70445740)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: Eucalyptus camaldulensis / フトモモ科 / 酸性土壌 / アルミニウム耐性機構 / ストレス応答 / エノテインB / 加水分解性タンニン / ポリフェノール

Outline of Final Research Achievements

Eucalyptus camaldulensis exhibits high resistance to aluminum toxicity which is a major factor limiting plant growth on acid soils, and its root contains a novel type of aluminum detoxifying ligand, oenothein B. (1) Oenothein B concentration in roots was correlated with Al resistance of five tree species. (2) Oenothein B could bind and detoxify aluminum. (3) Oenothein B binds to aluminum in competition with organic acids, and binds predominantly to aluminum. Taken together, detoxification of aluminum by oenothein B in root of E. camaldulensis contributes to its high aluminum resistance.

Free Research Field

森林学