The centriole as a rotating device
Turns out centriole blades are pitched always[1], centrioles are helical, and that means they pump cytosol along the central axis as they contract.
The rotation is generated by that dynein motor proteins squeeze the whole centriole together, pumping cytosol through it and making it rotate.
The "distal appendages" are distortion in the cytosol, vortices.
The "vortex" has been observed in the lumen of the centriole in electron photographs[2, 3] is a cytosol vortex, that shows how contraction of the helical centriole pumps cytosol along its central axis.
Synapses
Does the Geometric Design of Centrioles Imply Their Function? (1981)
The three-dimensional structure of the basal body from the rhesus monkey oviduct (1972)
I hope more scientific evidences will support the model, live cell super resolution microscope may finally prove how centrioles rotate.
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