2015 Fiscal Year Final Research Report
Evolution of gene duplication and adaptive capacity; experimental evolution of Saccharomyces cerevisiae
| Project/Area Number |
26650153
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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 |
Ecology/Environment
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
MAKINO TAKASHI 東北大学, 大学院生命科学研究科, 准教授 (20443442)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 重複遺伝子 / 適応力 / 進化実験 |
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| Outline of Final Research Achievements |
We conducted evolutionary experiments using Saccharomyces cerevisiae to test a hypothesis that number of duplicated genes increased under unpredictable environmental fluctuations and organisms with larger number of duplicated genes have high adaptive capacity. Th results showed that under randomly fluctuated environmental variable, Saccharomyces cerevisiae evolved to have larger number of newly acquired duplicated genes than those under constant environments during 500 generations of evolutionary experiments. The results also showed that for evolved Saccharomyces cerevisiae, the fitness from 450th to 500th generation increased with the increased number of newly acquired duplicated genes. These results support the hypothesis.
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| Free Research Field |
進化生態学
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