Ultrastructural demonstration of hormone-induced movement of carotenoid droplets and endoplasmic reticulum in xanthophores of the goldfish,Carassius auratus L. |
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| Authors: | Masataka Obika Szecheng J Lo T T Tchen Dr John D Taylor |
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| Institution: | (1) Departments of Chemistry and Biology, Wayne State University, Detroit, Michigan, USA;(2) Department of Biology, Wayne State University, 48202 Detroit, Michigan, USA;(3) Present address: Department of Biology, Keio University, 223 Yokohama, Japan |
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| Abstract: | Summary The hormone-induced pigment dispersion in primary cultures of xanthophores of goldfish (Carassius auratus L.) has been shown to involve the dispersion of not only carotenoid droplets but also of smooth endoplasmic reticulum. The dispersion of these organelles is inhibited by cytochalasin B and is accompanied by thinning of the cell body, thickening of the processes, and also overall changes in cellular morphology (process extension) under certain conditions. Electron microscopic examination of heavy meromyosin treated glycerinated xanthophores in scales revealed the presence of actin filaments in these cells.This work was supported, in part, by grants AM-5384 and AM-13724 from U.S.P.H.S. |
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| Keywords: | Endoplasmic reticulum Actin filaments Xanthophores Pigment cells |
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