2022 Fiscal Year Final Research Report
Abnormal texture in tomato fruit induced by cool temperature
Project/Area Number |
19K06022
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 39030:Horticultural science-related
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Research Institution | Nihon University |
Principal Investigator |
TATEISHI Akira 日本大学, 生物資源科学部, 教授 (30267041)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Keywords | アラビノース / アラビノフラノシダーゼ / 粉質化 / 細胞間接着 |
Outline of Final Research Achievements |
Texture is an important factor in determining fruit quality. In this study, we focused on the abnormal texture induced by a relative low temperature, and investigated the relationship between glycosidases, which are involved in changes in cell wall polysaccharide structures, and texture formation. As a result, it was shown that mealy texture, one of the abnormal textures, is affected by the collapsibility of fruit flesh tissue, and the method of examining the degree of the collapse of fruit discs when shaken in isotonic solution was found to be suitable for the evaluation of the mealy texture. It was also suggested that a specific isozyme of α-L-arabinofuranosidase, which is involved in the metabolism of cell wall polysaccharides, may be involved in development of mealy texture in tomato fruit.
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Free Research Field |
園芸学
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Academic Significance and Societal Importance of the Research Achievements |
果実の食感は品質を決定する重要な要素であるにもかかわらず、その形成機構についてはあまり注目されてこなかった。成熟時に形成される食感はそれぞれの果実の特徴にもなっている。一方で、過度な成熟の進行に伴って、食感は悪い方向にも変化する。また、不適切な貯蔵条件も食感を低下させる。本研究では、アラビノースの遊離に関わる、特定のα-アラビノフラノシダーゼの作用が食感形成に関わっていることを示した。ここで明らかにされた知見は、食感形成機構の基礎的情報を提供するだけではなく、今後の高品質果実の育成や貯蔵中の品質低下を抑制するための手掛かりとなるであろう。
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