5. Conclusions
In this study, significant differences were found in the effects of Mt and Pal on the morphology and physiology of C. reinhardtii . Layered Mt attached to the cell surface and could provide positive effects for algal growth. In contrast, fibrous Pal wrapped around the cell surface and significantly inhibited the algal photosynthesis. Moreover, some Pal could even inserted the cells, leading to damage of cell membrane and eventually cell death. Further research is needed to explore interactions between various microalgae and clay minerals and their influences on the biogeochemical cycles of elements in aqueous environments.