Effect of Asian dust on the picophytoplankton growth rate and cell cycle

초록

To investigate the effect of asian dust on the picophytoplankton, we carried out laboratory experiments for the variations of growth rate and DNA cell cycle on Prochlorococcus and Synechococcus after addition of asian dust. There are no differences in the growth rates of control samples and experimental samples added 5%, 20%, 50% asian dust, respectively. The specific growth rates of Prochlorococcus and Synechococcus in the experiment added 50% asian dust were lower than others, but the fifty percent addition of asian dust was high concentration relative to the concentration in the ocean during asian dust period. The additions of 20% and 50% asian dust also induced a Synechococcus cell cycle response. These results indicated that there is physiological effect of high concentration asian dust on the picophytoplankton growth and cell cycle.