2017 Fiscal Year Final Research Report
Discovery and understanding of novel aquatic plants-microbial interactions
| Project/Area Number |
16K14844
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Horticultural science
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 植物成長促進細菌 / 浮遊水生植物 / ウキクサ / 細胞外多糖 / 酵母マンナン |
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| Outline of Final Research Achievements |
We discovered for the first time in 2010 that a bacterium P23 coexisted on the floating aquatic plants so-called a duckweed, promotes the plant growth by two-folds. In this research project, we clarified that a plant growth-promoting factor produced by P23 is a novel extracellular polysaccharide compound. Furthermore, we discovered that yeast cell surface mannan also has duckweed growth-promoting activity. It was found that only the main chain α-1,6 polymannose structure is necessary for its activity. It was also suggested that yeast mannan stimulates duckweed cell surface receptors as long chain polysaccharide compounds to promote the growth. We have successfully uncovered the molecular mechanism of novel plant-microbial interaction and casted a stone to understand co-evolution.
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| Free Research Field |
微生物学
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