| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Arbuscular mycorrhizal (AM) fungi form a symbiotic association with several plant species and increase the absorption of mineral nutrients of host plants. Strigolactones induce extensive hyphal branching of AM fungi. Debranones are phenoxyfuranone compounds, which mimic strigolactone (SL) activity. 4BD is a functionally selective debranone that reduces shoot branching of rice , but does not induce seed germination of the root-parasitic plant. We had prepared several analogues of 4BD in which the various functional groups were added on the phenyl ring. Although we evaluated the biological activities of them with AM fungi, no debranones induced hyphal branching of AM fungi as well as natural strigolactones. Therefore we have made more SL mimics with various chemical backbones and evaluated their biological activity. In addition we have developed some strigolactone receptor inhibitors. We expect that these tools are useful for unraveling of the SL-perception mechanism in AM fungi.
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