Research progress and ecological roles of phytoplankton cysts

doi:10.13287/j.1001-9332.202002.032

Abstract

Abstract: Phytoplankton have a complex life-cycle. Resting cysts are formed like terrestrial plants. Cysts play important roles in resisting environmental pressure, surviving adverse environment, maintaining physiological homeostasis, and maintaining species reproduction. In some ecological events, cysts were served as “seed bank” for periodical algal blooming. However, compared with the mature cells, the ecophysiological research on cysts is relatively limited. To deepen our understanding on life-cycle and ecological roles of cysts, we reviewed the researches on cysts in the past two decades. Firstly, we outlined the types (resting cysts, zoocysts, mature cysts) and factors that affected the formation of cysts of typical dinoflagellates and diatoms. Secondly, we summarized the formation mechanism, physiological characteristics and germination factors of cysts. Finally, we discussed the significance of cysts in algal evolution and in ocean carbon cycle. This review, summarizing the adaptability and plasticity of cysts, would shed light on ecological mechanism of algae survival strategy.

WEI Guang-ling, ZHANG Shi-chun, CAI Zhong-hua, ZHOU Jin. Research progress and ecological roles of phytoplankton cysts[J]. Chinese Journal of Applied Ecology, 2020, 31(2): 685-694.

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