| Budget Amount *help |
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Outline of Final Research Achievements |
Plants in the family Orchidaceae depend on mycorrhizal fungi for seed germination and following seedling development, but little is known about the molecular mechanisms involved in the orchid-fungal interactions. This study aimed to clarify the molecular mechanism involved in the establishment and maintenance of mycorrhizal relationships by using various orchid mycorrhizal fungi with different ability to induce germination. As a factor related to the germination ability, it was suggested that the kind of partitivirus infecting the fungus and the involvement of endornavirus and megabirnavirus. RNAseq analysis using protocorms obtained with or without fungal inoculation was conducted to know the gene expression involved in symbiotic germination, and it was suggested that the defense response-related genes and sugar transport-related genes were involved in regulation of mycorrhizal interaction with fungi.
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