CILIARY MEMBRANE DIFFERENTIATIONS IN TETRAHYMENA PYRIFORMIS : Tetrahymena Has Four Types of Cilia

作者: Carol A. Sattler , L. Andrew Staehelin

DOI: 10.1083/JCB.62.2.473

关键词: BiologyCiliumTetrahymena pyriformisCell membraneTetrahymenaMembranelleCiliary necklaceMicrotubuleCiliary membraneCell biology

摘要: We have examined thin sections and replicas of freeze-fractured cilia Tetrahymena pyriformis. The ciliary necklace located at the base all oral somatic has been studied in sections. Since electron-dense linkers found to connect both microtubule doublets triplets membrane level necklace, associated seem be related transition region between a cilium. Plaque structures, consisting small rectangular patches particles distal are strain GL, but absent other strains this study. In freeze-cleaved material, additional structural differentiations observed membranes cilia. Somatic contain many randomly distributed within their membrane. Oral can divided into three categories on basis morphology membranes: (a) undifferentiated with very few particles: (b) arranged parallel longitudinal rows spaced intervals 810–1080 A that one side cilium; (c) short oriented obliquely main axis latter particles, cilium, serve as attachment sites for bristles 375–750 long 100 wide which extend surrounding medium. tips outermost membranelle may used detect food and/or modify currents so propelled more efficiently buccal cavity. Examination thin-sectioned material indicates form could linked doublets. Linkage adjacent areas cilium beat by restricting sliding microtubules. It is suggested membrane-microtubule interactions various forms different organisms.

参考文章(27)
Dorothy R. Pitelka, Electron-Microscopic Structure of Protozoa. Electron-Microscopic Structure of Protozoa.. ,(1963) , 10.5962/BHL.TITLE.7050
Frank Wunderlich, Volker Speth, Membranes in Tetrahymena. I. The cortical pattern. Journal of Ultrastructure Research. ,vol. 41, pp. 258- 269 ,(1972) , 10.1016/S0022-5320(72)90068-8
I. R. GIBBONS, Structural Asymmetry in Cilia and Flagella Nature. ,vol. 190, pp. 1128- 1129 ,(1961) , 10.1038/1901128A0
Norton B. Gilula, Peter Satir, The ciliary necklace. A ciliary membrane specialization. Journal of Cell Biology. ,vol. 53, pp. 494- 509 ,(1972) , 10.1083/JCB.53.2.494
Beverly H. Bergstrom, Catherine Henley, Flagellar necklaces: Freeze-etch observations Journal of Ultrastructure Research. ,vol. 42, pp. 551- 553 ,(1973) , 10.1016/S0022-5320(73)80026-7
Barbara H. Gibbons, I. R. Gibbons, FLAGELLAR MOVEMENT AND ADENOSINE TRIPHOSPHATASE ACTIVITY IN SEA URCHIN SPERM EXTRACTED WITH TRITON X-100 Journal of Cell Biology. ,vol. 54, pp. 75- 97 ,(1972) , 10.1083/JCB.54.1.75
Richard D. Allen, A REINVESTIGATION OF CROSS-SECTIONS OF CILIA Journal of Cell Biology. ,vol. 37, pp. 825- 831 ,(1968) , 10.1083/JCB.37.3.825