| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
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)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Endo-symbiosis is widely recognized as a process generating evolutionary innovation, in which unicellular organisms of a particular species live within, i.e., metabolize and propagate synchronically with a host cell of a different species. We conducted an unprecedented experiment of a long-term culture of a green alga (Micractinium sp.), a bacterium (E. coli), and a ciliate (Tetrahymena theormophila), in order to observe directly the evolution of component species in the culture. In this study, we revealed that a primitive form of endo-symbiosis between the alga and the ciliate, and also ecto-symbiosis between the alga and the bacterium, evolved in the long-term culture.
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