Comprehensive analysis of the biosynthesis of glycosidically-bound aroma precursors in Mangifera indica L. cv. Irwin

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K06019
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 39030:Horticultural science-related
• Research Institution: Saga University
• Principal Investigator: Okada Takahiro 佐賀大学, 医学部, 助教 (30584809)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 配糖体 / 香気成分 / 糖転移酵素 / マンゴー / 果実

Outline of Final Research Achievements

Mangifera indica L. cv. Irwin is known for its excellent taste and productivity, but it is also susceptible to anthracnose as it matures, making quality control difficult. This project focused on the storage pathway of monoterpene alcohols, which have excellent chemical defense functions, and explored the physiological factors involved in fruit vulnerability. As a result, comprehensive genomic information was obtained for this cultivar, and a group of UDP-glycosyltransferases specific to the storage of monoterpene alcohols was identified. Furthermore, the results revealed that the biosynthetic efficiency of glycosidically bound monoterpene alchols in fruit is linked to maturation and that this phenomenon may be due to the characteristics of the secondary metabolic system rather than the glycosylation pathway.

Free Research Field

糖鎖生物学

Academic Significance and Societal Importance of the Research Achievements

研究開始当初、マンゴーのゲノム情報は未解読であり、生体防御機構やその分子基盤に関する情報は非常に限られていた。本研究において化学防御機能に特化した香気成分の貯蔵プロセスとその特性、二次代謝関連遺伝子群の情報を網羅したことで、アーウィン種マンゴーの耐病性についてより具体的な検討・考察が可能となる。これを達成することにより、将来的に優良品種の育種や品質管理・高付加価値化の方針が得られると期待できる。