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Axodine

The axodines are a group of unicellular heterokont algae. They typically have one emergent flagellum, extended into a peculiar wing-like form supported by an internal rod, which lacks the root structure found in most other heterokont groups. They also have tentacles or axopods supported by bundles of microtubules, which arise from the surface of the nucleus. Most forms have chloroplasts, pigmented similarly to those of other heterokonts, but some are colorless and feed by phagocytosis. There are three groups included here:

The axodines were originally defined by Patterson in 1994. Moestrup treated them as the class Dictyochophyceae, formerly restricted to the silicoflagellates, while Cavalier-Smith proposed the new class Actinochrysophyceae for them.



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