High-speed video analysis of the flagellar beat and swimming patterns of algae: possible evolutionary trends in green algae

摘要: The flagellar beat and swimming patterns of flagellated cells 22 green plants, including 17 flagellates (volvocalean prasinophyte algae), motile three seaweeds, Bryopsis, Caulerpa, Uha, sperms a liverwort, Marchantia, fern, Athyrium, were examined using high-speed video system. So-called breast-stroke is widely distributed in occurs rarely ulvophycean algae; these algal groups similar to that found animal sperm common, both during forward backward swimming. Different types observed prasinophytes. results indicate evolutionary trends plants such as change from swimming, ciliary beating uni-directional (parallel) radial-directional (cruciate) beating. Such are shown two groups, the Pyramimonas-lineage Tetraselmis-lineage.