Experimental analysis of an early stage of endosymbiosis between an alga and a protozoon using a synthetic microbial ecosystem
Project/Area Number |
25440240
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Ecology/Environment
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Research Institution | Ehime University |
Principal Investigator |
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
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)
|
Keywords | 細胞内共生 / マイクロコズム / 実験進化 / 進化 / テトラヒメナ / クロレラ / ミクラクティニウム |
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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Report
(4 results)
Research Products
(15 results)