| 초록 |
According to the previous studies, many aquatic photosynthetic organisms, such as microalgae utilize carbon dioxide (CO2) and bicarbonate (HCO3-) as carbon sources through CO2 concentrating mechanism. In this point of view, we tried to verify the relationship between the extent of chemotactic response toward HCO3- and carbon dioxide fixation efficiency of microalgae. In this study, we observed the chemotactic behaviors of the wild-type and mutants of a motile microalga, Chlamydomonas reinhardtii CC125, in a microfluidic system. As a result, well-growing mutants had a tendency to prefer higher concentration. In other words, the chemotactic responses of well-growing mutants showed higher values. In addition, the correlations among the chemotactic response, △OD and Y(II) showed meaningful relationships. In conclusion, the chemotactic response toward HCO3- and the CO2 fixation efficiency of microalgae are closely related. This result implies that this strategy can be used for high-throughput screening to find the microalgal strains with high CO2 fixation efficiency. |
