| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
This study aimed to elucidate the interplay of gravi-, rheo- and photoresponses of swimming microalgae, particularly Chlamydomonas. Combining the experimental and the numerical approaches, we revealed that the mechanism of negative gravitaxis in Chlamydomonas reinhardtii can mainly be attributed to the shape asymmetry of the cell. The steep turning suggested that flagellar waveform conversion such as avoiding response or asynchrony between the two flagella could reinforce negative gravitaxis. We also showed the usefulness of microfluidic approach in studying rheotaxis.
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