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A chrysomonad (Heterokonta:_[[Chrysophyceae)_under_[[Transmission_electron_microscopy.html" style="text-decoration: none;"class="mw-redirect" title="Chrysophyceae.html" style="text-decoration: none;"class="mw-redirect" title="Heterokonta: Heterokonta:_[[Chrysophyceae)_under_[[Transmission_electron_microscopy">TEM,_with_a_smooth_flagellum_(1)_and_a_long_flagellum_covered_with_mastigonemes_(3).html" style="text-decoration: none;"class="mw-redirect" title="Chrysophyceae">Heterokonta: TEM,_with_a_smooth_flagellum_(1)_and_a_long_flagellum_covered_with_mastigonemes_(3)">Chrysophyceae">Heterokonta:_[[Chrysophyceae)_under_[[Transmission_electron_microscopy">TEM,_with_a_smooth_flagellum_(1)_and_a_long_flagellum_covered_with_mastigonemes_(3) Mastigonemes_are_[[Anatomical_terms_of_location.html" style="text-decoration: none;"class="mw-redirect" title="Chrysophyceae) under TEM,_with_a_smooth_flagellum_(1)_and_a_long_flagellum_covered_with_mastigonemes_(3)">Chrysophyceae">Heterokonta:_[[Chrysophyceae)_under_[[Transmission_electron_microscopy">TEM,_with_a_smooth_flagellum_(1)_and_a_long_flagellum_covered_with_mastigonemes_(3) Mastigonemes_are_[[Anatomical_terms_of_location">lateral_"hairs"_that_attach_to_protistan_[[flagellum.html" style="text-decoration: none;"class="mw-redirect" title="Transmission electron microscopy">TEM, with a smooth flagellum (1) and a long flagellum covered with mastigonemes (3)">Chrysophyceae">Heterokonta: [[Chrysophyceae) under [[Transmission electron microscopy">TEM, with a smooth flagellum (1) and a long flagellum covered with mastigonemes (3) Mastigonemes are [[Anatomical terms of location">lateral "hairs" that attach to protistan [[flagellum">flagella. Flimsy hairs attach to the flagella of [[euglenid flagellates, while stiff hairs occur in [[stramenopile and [[Cryptomonad|cryptophyte [[protists.Hoek, C. van den, Mann, D. G. and Jahns, H. M. (1995).
Algae : An introduction to phycology
', Cambridge University Press, UK.
Stramenopile hairs are approximately 15 nm in diameter, and usually consist of flexible basal partt that inserts into the cell membrane, a tubular shaft that itself terminates in smaller "hairs". They reverse the thrust caused when a flagellum beats. The consequence is that the cell is drawn into the water and particles of food are drawn to the surface of heterotrophic species. Typology of flagella with hairs: *whiplash flagella (= smooth, acronematic flagella): without hairs but may have extensions , e.g., in Opisthokonta *hairy flagella (= tinsel, flimmer, pleuronematic flagella): with hairs (= mastigonemes ''sensu lato''), divided in: **with fine hairs (= non tubular, or simple hairs): occurs in Euglenophyceae, Dinoflagellata, some Haptophyceae (Pavlovales) **with stiff hairs (= tubular hairs, retronemes, mastigonemes ''sensu stricto''), divided in: ***bipartite hairs: with two regions. Occurs in Cryptophyceae, Prasinophyceae, and some Heterokonta ***tripartite (= straminipilous) hairs: with three regions (a base, a tubular shaft, and one or more terminal hairs). Occurs in most Heterokonta/Stramenopiles Observations of mastigonemes using light microscopy dates from the nineteenth century. Considered artifacts by some, their existence would be confirmed with electron microscopy.Bouck, G.B. 1971. The structure, origin, and comnposition of the tubular mastigonemes of the Ochromonas flagellum. J. Cell. Biol., 50: 362-384


References

Category:Algal anatomy Category:Heterokonts Category:Flagellates {{cell-biology-stub