2010 Fiscal Year Final Research Report
Chemical Inhibitors of Viviparous Germination in the Fruit of Watermelon
| Project/Area Number |
21580122
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Bioproduction chemistry/Bioorganic chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | アブシシン酸 / アブシシン酸糖エステル / 胎生発芽 / 植物ホルモン |
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| Research Abstract |
It is well known that the seeds of watermelon [Citrullus lanatus (Thunb.) Matsum and Nakai] have a high potential to germinate when the fruit has ripened. When removed from the mature fruit, the seeds can germinate under appropriate conditions. However, it is unclear why they cannot germinate in the flesh of the fruit. Here, we show that cis-abscisic acid (cis-ABA) and its b-D-glucopyranosyl ester (ABA-b-GE) accumulate in the flesh of the fruit at levels high enough to inhibit seed germination. This result indicates the existence of a chemical inhibition system against seed germination in the fruit of watermelon.
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