2017 Fiscal Year Final Research Report
Environmental factors and cultural practices to produce tomatoes with enhanced levels of polyphenol, and their mechanisms
| Project/Area Number |
15K07669
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Agricultural environmental engineering/Agricultural information engineering
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | トマト / ポリフェノール / 塩ストレス / 有機質肥料 |
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| Outline of Final Research Achievements |
Tomato contains a range of polyphenol, which are regarded as potentially useful compounds with respect to health benefits. However, little is known about cultural practices to produce tomatoes with enhanced levels of polyphenol. Therefore, the aim of this study was to elucidate the effect of cultural practices such as the application of stress (drought, salt stresses) organic fertilizer on polyphenol content. In our studies, polyphenol contents were increased by the application of stress and organic fertilizer, and their effects depend on cultivars and growing seasons. In addition, the stress-enhanced polyphenol content was resulted from the reduction of fruit water, but not net accumulation by up-regulation of biosynthesis. Furthermore, we suggest that salt-induced changes in polyphenol biosynthesis enzymes may not correlate the changes in the polyphenol content. Therefore, our studies conclude that polyphenol contents in tomato fruits enhanced by cultural practices.
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| Free Research Field |
生物環境工学
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